More Power? More Vacuum? Rhoads Lifter Test Part 1 (406 SBC w/Summit 1203 Cam)

[@MartinKirklandll]

Of course would love to see tests..have always wondered about those lifters.

[@RussellCompton-fh3gr]

same here years ago they didnt work as well,,,,machining and design may have improved

[@christopherpoucher483]

Seen them about 20 years ago in a jegs mag, and have wondered about them ever since 😂

[@douglash3129]

YES, I would like to see the tests!

[@jonwaterbury3312]

I am extremely interested in this test. I also LOVED that you broke-in TWO different sets of lifters on ONE camshaft. IT IS possible!

[@cuttersperformance]

If you're crazy 🤪 haha yes it is

[@tvdroid22]

I've done it on a stock 318. It was a dad truck and he'd told me to take it and drive it some. Shoulda known it was a setup. Anyway, didn't take long before it jumped timing and though it got me home, it was running rough. Bent a couple pushrods and valves, pierced a couple rocker arms, and I figured the lifters were damaged as well. Cam looked ok, so I replaced the head with one I had available, all new pushrods, the damaged rockers, timing set, and all new lifters. Granted, it's a very mild cam with super soft springs, but it worked, and ran better than ever.

[@MrsSunshine75]

What a terrific video, I had these Rhodes lifters 35 years ago on an Erson high flow II H camshaft and they sure were noisy, drove me nuts, glad to see that they actually do work at low rpm but would love to see what they do on the DYNO!

[@buzzwaldron6195]

Preferred the quiet bleed down Crane lifters... thought there would be a dyno run here...

[@ClaremontClassicGarage]

I have a set in an old Ford 302 on a 80s Crane Energizer. They are fantastic. And as a testament to the way they used to make stuff this is the third engine this cam/lifters has been in and still going strong.

[@brocluno01]

Have used Rhoads lifters with marine engines with wet exhaust. You get reversion with any cam over about 250* advertised duration (water getting sucked back in from exhaust) at low engine speeds. Rhoads lifters allow cams up to 280 and maybe a bit more w/o going to open headers (illegal on many lakes). Yeah, you might loose a little lift, but you gain progressive duration which really helps boats on the top end (4,500 up). Cars, it may be less advantage, but they are still in business, so there is a solid customer base 😊 Please do the test. Last set I bought, I called Rhoads and asked if they were still Johnson Controls making them, yup, still made in the USA with good quality controls 😀

[@mr.b2107]

I have a set in a older 360 mopar engine and I believe they work pretty much as advertised. I don't know why more people haven't used them, they are ideal for a powerful street engine.

[@jamesdalton7191]

There are 2 different sets of Rhoads Lifters. The standard and the upgraded. I bought my first set back in 1986. Love them 😎🏁

[@M.Taylor-j4g]

I have ran these lifters since 1986 on the street 284/484 cam love them

[@madisonbusman7688]

Remember these way back in the 80's but have never seen a comparison test. Very interesting

[@stickman-1]

I ran Rhoads lifters for 20+ years until I switched to a roller. I loved them and recommend them to anyone that wants the best street engine. I had no problem with power disc brake and with all due respect to David Vizard, they do work. By 4500 rpm they were fully pumped up. I love the way they sound. With today's roller cams ever where, I'm not sure there is still a market for them, but for any hydraulic cam, street engine, they are fantastic.

[@jhenry7406]

I had a set in a small block Chevy years ago,280 490 crane cam,sounded like van Halen drum intro on hot for teacher song idling

[@unclebob7937]

​@@jhenry7406 Now that's a spicy cam!

[@savbbv8223]

Best test I have seen, yes for top end dyno figures.

[@tedgay8427]

Back in the mid 80s, in a 1965 Pontiac GTO 389 tri-power, running an old school Comp 292 cam (244@.050 single pattern) and headers, they worked as advertised. Power brakes worked as normal and we were able to lower the idle speed. However, the car seemed to lay down on top. At the Pomona drag strip, the car went from consistent 12.8s to 12.9-13.0. For what it's worth,

[@scoutdogfsr]

I used to run these on in the late 80's. They worked to reduce idle emissions and eliminate some of the chop that drew the attention of the emissions tests dorks.

[@captainrawn]

Yes please do the test I am considering these for a build and would love to see the results! If they are with 10 to 15 HP that's a win in my eyes.

[@bradlygordon1725]

Cheeter lifters!! Haha guys have been using these to get around rule books for race motors for a long time! Absolutely love your videos man keep them coming!

[@DOffio]

Ran a 302 Ford with a set in the 90's. Crane Cam, Holley DP race carb. (no choke horn) It would not idle for crap under 1400 rpm with standard lifters. With the Rhoads lifters, it would idle at 800 RPM once the oil warmed up a bit. I smoked more than a few people who mistook the smooth idle for being mostly stock.

[@johnjon6349]

Yes, I’d love to see the Dino tests. I’ve got two sets of them sitting in their boxes for years now I haven’t used them yet.

[@brettritchie4014]

Hi mate Thanks for taking the time to post this, it's much appreciated.... I definitely want to see the dyno results Back in the 80's, I ran some Crane Hi Intensity lifters in my Australian 308 Holden. What the claim from Crane (at that time) was, they offered similar benefits of the Rhoads lifters, but with less mechanical noise, as the Rhoads do clatter quite a bit compared to a conventional style hydraulic lifter They definitely reduced the chop in the idle, and increased vacuum at idle compared to the conventional style hydraulic lifters I had in it. However, I never ran it on a dyno to see if the peak power numbers were effected I have a new set of Rhoads lifters now that I am planning to run in an upcoming Holden V8 build, and am concerned about power loss at the expense of addition vacuum and idle quality So I'm really keen to find out the results

[@keithtobin5369]

Semper Fi. I want to see the dyno test great work you have been doing. Best part is that you show guys on a budget things you can do by swapping out The springs in a vortec head. Keep it old school buddy. Keep it low back for us poor guys

[@davidcallahan5157]

Ran these on small block Chevy in 1987 , I had good luck with them .

[@JimBailey-w9g]

I’ve ran these lifters for 40 years, I have used these lifters in 366 and 427 grain trucks and winch trucks in our every day 1 ton Chevy trucks And Chevy powered jeeps not one cam or lifter failure, and we are still using these cam and lifters today.

[@ThisFyneOleTruck]

1st whoohoo!😂 I ran those back in the 90s in my 67 Barracuda fastback. They drove good on the street from what I remember, the noise never bothered me since I always ran mechanical cams even on my daily. It's just what we did back then, hydrolics were the fance stuff.

[@cuttersperformance]

Fast with the comment 👌 🙌

[@ThisFyneOleTruck]

@cuttersperformance I saw the short on IG so I've been waiting on the video 😄, I always ran a hv pump with a thinner oils, it was against the grain back then but more accepted today. Definitely wanna see sum tests!

[@AndrewReiwitch-sw9lf]

Yes, dyno plz!! I ran Rhoads lifters in the 80's in a 415 SBC and they flat out worked!

[@Red_Bluff_Ed]

I built a 350 Chevy in about 1985 for my ‘69 Camaro. Ran 13.60’s with Erson cam and lifters. I swapped out the lifters with Rhoads and with the same tune, it ran 13.60s… same as before. I think they were the next big thing back then.

[@michaeldamian5140]

Back in the mid-1980s I bought a 1969 Dodge Dart GT 340 that had a big hydraulic cam. The car had been raced previously but I used it only on the street. I added Rhoads lifters to smooth out the idle and improve lower speed torque. This worked very well, making the car a pleasure to drive around town, but was still plenty fast when pushed on an open road. The lifters did make a slight clicking sound, similar to mechanical lifters/tappets, but I got used to it. I added air conditioning, and the engine ran smoothly with AC on even at idle. I never dynoed the car, but I enjoyed driving it. I've found that too much cam and too much carb can cause problems with cars intended for street use.

[@approachingtarget.4503]

They resume typical function at about 40psi. That may differ with each application. Don't have to believe magazine advertising, talk to the old timers. Especially those in circle track racing. Many of the elite racers from the 70's and 80's ran them. If you want to set a few more things straight. Try running the VW mushroom variations. They will add about 20° duration to any cam. So while the lifter register 15" of vacuum for tech inspection. By 40psi, the lifter returns to normal. The wider lobe footprint can allow a 260° cam to be used in vacuum restricted classes. The key was to adjust oil pressure to the track conditions. When in the rpm, the power comes on at full. Dick Trickle, Alan Kawicki, Mark Martin, Rusty Wallace, and Dale Ernhart all ran them. As a matter of fast. They were in Bill Eliots' car in 1985 when the highest Daytona speed was recorded. Today... other manufacturers try the same function through a bleed whole in the lifter face. As pressure increases, the oil is diverted to the whole. As the oil is restricted from flowing through the whole, the lifter pumps up. Try the VW lifers with a small cam. Factory one for all science purposes. Watch it gain 15% power and an additional 2000 rpm.

[@scottcimfl77]

Please do the test. I have a 406 on the stand that is for my truck. I might need to change some parts.

[@kyleoden7656]

Yeah it'd be nice to see the difference on the dyno between the two

[@rickobrien4014]

I installed Rhodes lifters 35 years ago in a 350 Chevy that has a Crane "Bracket Racer" cam . They allow me to cruise in overdrive without loping or lugging. Midrange and top end power is great. These are a high-quality product for sure!!

[@Chris-bn1bn]

Damn, I was told by multiple sources that they don't work, but if they do, hell yes, I'd love to see these things in action! These things have been arround forever, like long before the internet. I know because I read about them in Hot Rod & the like. Definitely a must see!

[@hackertheslacker]

I ran these lifters ordered from P.A.W. in the late 90's. Mild Street Build: SBC 355 9:25.1 Keith Black pistons, fuelie Heads, Isky 280 mega, weiand 8004, 650 Holley dp... They worked as far as lifters. No dyno numbers to share with you.

[@DMWatson-qc6mz]

On a limited Sprint engine (305) that we built....We used a set, and off idle, when you were on a restart, the lifters would give you a 2 car length lead when you stomped the throttle at the same time as the guys behind you. That allowed you to get into the corner in the most beneficial way you wanted because of the confidence the driver had that it would repeat itself every time. I found that oil pressure..."AND" oil volume are pretty important in those lifters. On those engines, we were using a "standard" Big Block oil pump, because we had to run a wet sump. Of course we eased all the passage edges in the pump, and used the shorter drive shaft to the distributor...but with the "by-pass" in the filter plugged...and a small 1/16 inch hole in the oil galley to lubricate the back of the timing gear....it worked great. However, we did use heavy oil (20w-50)....and I would imagine you would find some differences with lighter oils. I always thought an adjustable by-pass might be a great idea in this situation.

[@dakotastimeout2827]

I’m very excited to see the results, thanks for doing this

[@blownaway4371]

YES! Would love to see that!

[@aps454]

I remember selling these in the 90s. IIRC the key is the oil pressure. Too much low end pressure and volume tends to keep them from bleeding off, too little top end pressure keeps them from pumping up. Old school 20w50 and straight 30 weight guys had cold start and running issues, lifter staying pumped up.

[@Wayne-f5y]

I've used them about 25 yrs ago running 1/8 mile track on the weekends. 60 ft times decreased a bit. Don't remember how much, long time ago. They definitely made daily driving more agreeable, brakes,idle, mileage. The only thing I didn't like was trying to get them all setup to pump up at the same time. All in all a good experience

[@Lagrange1186]

Absolutely yes do this test. The sound and vacuum change alone says something is working. I don’t think it will get the power gain on the high end but even doing the same power level as the Delco would be impressive.

[@toefield251]

In the mid 90s I met a racer who praised the Rhoads lifters. He said they gave great low rpm power and on the top end the motor would rev up so fast it slung the belts off. I tried them on a mild cam 350 NA with an automatic transmission and highway gears. It ran strong but in the course of running them I had three malfunctions. I broke a pushrod first, then another pushrod, then broke a rocker arm. I went back to regular hydraulic tappets. It's supercharged l now and I've never had a valvetrain issue before or since the Rhoads.

[@cuttersperformance]

Interesting! Thanks for sharing your experience

[@TomSmith-cv8hk]

Broke a rocker with them, pulled them after that.

[@brettalder3129]

I have used Rhodes on many engines. They increased the vacuum by 3” and had the same top end as normal lifters. This was on a Ram Air IV Pontiac. My testing at the drag strip showed no appreciable difference in ET because I drove through the RPM very fast in first gear and the converted stalled at 2000 RPM so the lifters were already pumped up. However driving on the street away from a stop light you could feel the difference. As to the noise, they aren’t any noisier than a solid cam shaft, in fact slightly quieter. Using aluminum valve covers helps if it is that bothersome. A sewing machine is an accurate description. It always amazes me how people have no issue from the noise a solid cam makes, yet complain about the Rhodes. The exhaust is always louder than any valve train noise

[@scottb7559]

I worked in a speed shop in the late 80's through the 90's. I sold a lot of Rhodes lifters for street cars. Better for power brakes and less need for high stall converters.

[@sebbonxxsebbon6824]

People must have liked them or you would get complaints.

[@thomastaylor1594]

i built a 4-V cleveland with closed chamber heads and big cam it really made it come out of the hole at low rpm and made horse power at the top end, its a great product, i wish they made it as a roller lifter!🐍

[@cuzz63]

I remember these back in the 80's, didnt know they were available.. Would love to see a modern independent test. The way I remember was that guys who didnt want to deal with the drive ability issues of a radical cam would still get the radical can and runs these lifters.

[@terrypikaart4394]

They work!.. Had them in a old 350 chev with 1.94 heads and large cam and TM1 intake. Wow that thing was a rocket out of the hole, even with 3:73 gears.. Should have fell on its face for a bit, but vaporized tires and pulled hard to 6500.

[@daveyorke3818]

I have never used these ones, but have used a similar type in a Harley. Listed as a hydra solid. Yes they are noisy but did turn into a solid at high rpm. As for performance gain I could not say. They definitely worked as advertised with no valve float at high rpm.

[@williamscore5322]

I would love to see that dyno comparison.

[@DreadPirateBob]

This is awesome. Please Dyno it as low as the Dyno will pull as well as the top end sweep

[@teagreen2220]

This is 1980s tech. I personally never liked them but they definitely work in the way they say. I would rather use electric vacuum pump that comes on with a pressure switch. To each their own. Great video!

[@crazyoilfieldmechanic3195]

Actually Rhoades lifters were made in the 70's and they were derived from Pontiac lifters. Several of Pontiacs highest performance engines of the late 60's had "bleed down" lifters in them and stock and super stock racers figured it out and bought Pontiac lifters for certain race applications.

[@Carl_Jr]

I ran these in my 355 with Vortec heads and a Magnum 280 for over 20 yrs. I got the same cranking pressure you did but nowhere near that much vacuum at idle. The most I could pull was 12 in/Hg. And yes, they're noisy as heck. I'm switching to a roller cam. Next spring for the Edelbrock E-tech 122 you helped me figure out the mystery port on the Atomic 2.

[@newcitycarpet3675]

Another variable would be the pump up difference from 10w 30 to 20w 50.

[@cuttersperformance]

I want to try both viscosities

[@chrismathes3647]

Had these in my 351W Foxbody for years. Worked great, little louder than I preferred. Fwiw I used an old pair of valve covers cut in half to adjust them running. Before everyine hates on me this is how we got it the quietest. I was 17, guys helping me were a handful of circle track guys and a Porsche expert that taught me a ton about engineering. God I miss that car ❤😕

[@glennbellman1100]

I tried Rhoades lifters in my fresh built 390 ford. I did not like the noise, so I took them out and put speed pro lifters in. Very happy with that decision. Also used Crane high intensity lifters in a fresh built 350 chevy. They helped the idle, but don't bleed down as fast as a Rhoades lifter.

[@hydrocarbon82]

I was told to get these as a teen and they definitely worked. Granted I had a fairly mild Summit cam in a stock 350, it never had start-up issues, always idled great, and brakes worked well (even being 4 wheel drum). It acted more like a stock cam, besides having some power. I have some ilde clips before I swapped to an LS.

[@GarySlager-i2u]

Yes, I want to know the results, I'm curious about what or if there is any changes in the torque. Thanks

[@chrisreynolds6520]

I have tested the V-Max version roller cam version myself in the fuel injected 383 in my Express van. In my application, aluminum head 6" rod 383 at 11:1 compression and a smaller camshaft they worked too well. I had 230 psi of cranking compression, went back to a LS7 lifter and had 205 psi. Top-end power was unchanged, the mass airflow sensor showed zero change in airflow above 4,000 rpm altough it did smooth out the noticeable spike in airflow around 3,000-3,500 where they pumped back up. The midrange around 3,000-4,000 rpm was a bit softer with the Rhoads lifters but low-speed torque especially part-throttle was much stronger with the Rhoads lifters. Throttle response became much soggier with the LS7 lifters. I had a factory vortec camshaft smooth idle at 650 rpm with the Rhoads lifters. 19 in/hg idle vacuum. Camshaft was a Comp custom ground roller, 271/284 @ 0.006, 218/228 @ 0.050, 0.578" lift, 108 LSA and 106 ICL. Lost about 5.5 mpg with the LS7 lifters, went from 20.6 mpg to about 16 mpg on back to back long highway trips. That was a 502 hp 383 in a 7,000 lbs van backed to a 4L85E, 3.73 geared 10.5" full float 14 bolt and 30.5" tall 10 ply LT tires. The stock Dodge Viper V10s had a very similar high bleed lifter from the factory as a Rhoads lifter. We put the Viper lifters in the older Dodge Magnum engines in trucks, SUVs, and vans with modestly sized aftermarker cams 15+ years ago to allow the speed density map sensor based EFI that could not be tuned at that time (usually used a Mopar Performance ECM for the vehicle to get the hotter advance curve and other tweaks Dodge made to them) to have a good clean vacuum signal

[@Gearhead.327]

I put Rhoads on a '69 318 (268H) with non adjustable rockers back in 1985. They worked well but, the idle exhaust sounded dead stock.

[@goratgo1970]

Thanks for info. Stock sounding idle with a stout cam for street use is a bonus to me. 🤫

[@autoshotty]

The 268's sounded stock in any application.

[@steveosborn7991]

I used these in a 70 440 6 bbl with a 292/509 cam with a 4 speed, 3:55 Dana 60. No problem with brake vacuum and at around 3,000 rpm they pumped up at the same time the 1,000 c.f.m. of the outboard carbs started opening. Unbelievable acceleration at 80 mph in 4 th gear!

[@dondotterer24]

I had good success with the Rhoads lifters on a 327 30 over. Comparing to my friends engine built the same and same camshaft. Mine idled at 650 his 850. I ran 2800 stall a he had to run a 3500. Mine had more lowend torque and more drivable. And wasn't quite as noisy as yours for some reason.

[@cuttersperformance]

They actually sound noisier in the video than they do in person

[@carlosfgarciasepulveda5927]

What camshaft were you guys running in your 327s?

[@dondotterer24]

@@carlosfgarciasepulveda5927 the old 280 Cam Dymactics. A long time ago 230 at 50 about 480 lift can't remember the LSA but I'm guessing 112

[@trunkmonkey9417]

Can't wait to see your dyno numbers/video. :) I ran a set in an Olds 330 back in the late 70s (in a '64 Buick Special). Yes they were "chatty" and I actually liked the sound. At the time everyone seemed to want chop and loud exhaust. I wanted my car to be unassuming. The car had very good idle, and with a q-jet deep first gear with a wide ratio 4 speed and 3.08, (10.5 SLR) it came out of the hole quick and built power very fast as the lifter pumped up. I ran GTX 20-50 so that helped the lifters stack up like they were supposed to, and I did not think twice on shifting at 7k. Drove the car daily for years, and never had any problems with the car. (Did a lot of work on the build, F heads 2.07 intake/1.625 exh, ported/matched to intake, unshrouding, .060, 10.5 TRW forged pistons, 0 decked, .475/328 108 CL cam. The car was very quick and it got 21 MPG on the highway averaging about 65 MPH (drove from Florida to Kansas and back). I think the Rhoads lifters had a lot to add for vacuum, power and economy along with the Q-jet primaries and higher velocity/response off idle and low side of midrange as the lifters pumped up about the time the secondaries come alive. The car was very drivable when conservative. No bogging or stumbling off the line, smooth transition off idle to moderate when shifting. All the vacuum for power disc/drum brakes. I never did kill that Saginaw although everyone said it should not have lived.

[@TheDynamiteGuy]

TEST, TEST, TEST! And a note from experience: I used a 1975 Pinto Station Wagon as a daily driver with the 2.8L Cologne V6 and solid lifters. They needed to be adjusted every 15K, twice a year and were reasonably easy to adjust. I couldn't tell the difference in sound between them and my Chevy 348.

[@seanking5496]

Oil viscosity has a huge effect on these. Cold start lumpy idle that smooths out as the oil heats up.

[@raymonddaniels5804]

Test it !!!!

[@tracycurtright2671]

In December 84 my college room put a set Rhodes lifters in his 79 Z-28. It was a Comp268 but it never had all the top end power that it had before.

[@gregloglisci1481]

I would love to see some Dino results video is awesome. I was waiting for somebody to do a report on road lifters done a great job on the report thank you.

[@codyhollinger6531]

Yes, I'm very curious to see the lifters tested on the dyno.

[@Ken-wu2bf]

Same here would love to see you results

[@toddtheisen8386]

Your engine setup is similar to my 1970 Challenger. Also holds about 12" of vacuum and can idle at 800, even with the hot cam. Running a 2800 torque converter and the launch is right on the edge of breaking loose. Won't win any burnout contests but at about 3500 rpm the old boy really blasts off. Plus I like the pseudo solid lifter sound. My Rhoads have been in since 1985 and not one failure.

[@Thundarr995]

I used Rhodes lifters on a 383 I built about 20 years ago. I used an XE274 Comp cam. I had about 14 in of vacuum. I was also using a vacuum canister. I had pretty decent power brakes. I never crashed into anything. 😂 I had just shy of 200 cranking compression. Tbh, I have no idea what kind of power that engine was making. I'm thinking probably 420-440ish? I had it in a 74 Camaro. Sometimes me and my buddy would cruise around looking for stop light to stop light opportunities. I kinda miss that car. I have a Vortec 305 in my S-10 right now. It's 100% stock. And it looks like it came from the factory like that under the hood, all except for the headers,electric fan. I deliberately used a 305 because I didn't really want to be working on it all the time. And I don't think the NVG3500 transmission would hold up to a whole bunch of torque,or the rear axle.I put a Torson posi out of a late 90s Camaro in the rear axle for some traction. It's still a pretty fun little truck, even though it's probably only got 230ish hp. The old 4.3L was probably only making 175 or so. And that's at the crankshaft, so it probably only had 140 -150 at the wheels. I kinda made some homemade traction bars out of an old pair of square body leaf springs and polyurethane pinion snubbed bushings. They do an ok job with limiting axle hop. I really don't drive like an maniac anymore. I'm pushing 50 now. I don't wanna be fixing shit all the time. 🤣 I just wanna drive it.

[@gregmckinney6977]

Please run the dyno tests of each type. I ran them in the 70's, early 80's, right after they came out. They seemed to do as advertised, at least helped the vacuum at low rpm without noticeable drop in HP. No dyno testing done at the time, couldn't afford it. 🙂 They did have an issue that if the idle oil pressure was too high, they didn't work as well.

[@steveb7310]

I definitely want to see a dyno test on these. I ran Rhoads Lifters in my Oldsmobile 350 with a fairly hot cam (don’t remember the specs) back in 1987. The idle was good, the vacuum was pretty good too. I didn’t like the noise though. Low end was improved but not great. Mid to high was impressive even in my big heavy ‘76 Delta 88 with 2.73 gears. Later I built a 455 with a similar spec cam and I went with TRWs bleed down lifters. They worked just as well without the ticking.

[@buckaroobonsi555]

I would love to see if the Rhoads Lifters can recover their lift top end!

[@dondotterer24]

Thanks for the video. Yes more testing please. They also make 2 different types of rollers also.

[@mattdavis822]

Yes we want to see

[@ddwheels4425]

Yes!!😃 Please do the Dyno test👍

[@obbyjep7597]

I've always wondered about these, cool text, ya be neat to see dyno results for sure

[@mikebrown4429]

I really love all of the videos you did on the vortec 350 . I keep going back to them as I build my engine

[@highrzr]

Dyno test would be awesome. I used them once bad in the day and they seemed to work as advertised. Yes, they were not quiet, but only noticeable with the hood up.

[@Hogiewan1]

Really cool, thanks a lot for doing this and posting. Now we know!

[@CSXT8250]

Have used these back in the 80's. They absolutely do work, it will pull up top (and continue to pull beyond) like a solid. These also help smaller displacements (like 305's) that are low end sensitive to healthy cam numbers a great deal. In terms of sound, it sounds quite similar to a Duramax at idle across a parking lot.

[@paulrinehart4262]

They work, I have used them in the 80s/ 90s

[@thegrumpytexan]

Yes, please! Test this. I have that same set but haven't finished the engine yet.

[@Christopher-re2hl]

I ran crane high intensity lifters and Rhodes. They both do the same by leaking down duration and it had increased low end torque and more vacuum but I wonder if it makes a difference with a standard volume oil pump verses a high volume or high pressure

[@greggsvintageworkshop8974]

Yes, please do the Dyno tests!

[@chuckalexander987]

Absolutely would like to see a dyno

[@jimcrawford5603]

used them on a pontiac 350 in the 80's helped a lpt ( non adjustable valve train ).

[@600wheel]

I would love to see it, not gonna lie I thought that’s what I was clicking on in the first place but now that we’re here yes

[@mikealkarout9555]

Hell yes please dyno both!!

[@francoismachine]

Wow, why haven’t I heard of these before haha .. great test, looking forward to the dyno results !

[@greggc8088]

Yeah, in theory it sounds great but without a computer calculating load and controlling bleed off with a PWM voltage it's not going to be of much benefit but prove me wrong. I would love to see the tests. Solid lifter, roller cam, a proper high stall converter/side stepped clutch, and a set of matching gears along with sticky tires and a redlined WOT is the only way. My opinion.

[@mre1984]

I would be interested in the test results!

[@bigal878]

I’d love to see the difference in the two types of lifters. Watching with interest in Australia 🇦🇺 👍

[@MatthewJensen-d9u]

Great video. I was just thinking about putting these in a 318 getting rebuilt currently. Thanks for a Hotrod Magazine experience.

[@kennethcohagen3539]

I want to see the dyno results, but keep in mind that you would use thicker oil when these came out. Straight 40 weight was we used in AZ on street strip engines, it makes sense that Rhoads lifters would bleed off less pressure with thicker oil than the super thin oils used today.

[@cuttersperformance]

I plan to test them with 20w50 and 10w40

[@anthonypritchard7710]

These tests are always gonna be good.

[@lancr735]

YES!! Definitely interested in WOT results of the Rhodes lifters. 👍🏻👍🏻

[@jamesandannschmitt6835]

You have to be careful on over the nose spring pressure. If you get too much they won't recover at high rpm. As a result you get valve float. I use on a circle track setup and found the Z28 springs were the max I could use

[@cuttersperformance]

I'm running beehives on this engine which have great control with low spring pressure. So hopefully they work well

[@michaelcrotty6898]

New subscriber here. Love your videos.

[@JimSix-jo6hf]

I remember these from back in the 70s and 80s they work well on a street driven car and they do what they claim, you can drive it to work and get good MPG during the week and go to the track and run good on weekends, what I remember is it did not last long , lots of valve train failures over time

[@JeffBailey-j3d]

Yes, definitely interested in a dyno test. It would supply tangible power data.

[@jeffallen3382]

I'd like to see that back to back test!

[@pizzle4420]

inski anti pump up lifters are the best ive used

[@Wayland-j5s]

Still running them in my old small block that I built in the early 90s. Yes they do work.

[@ericfaley9019]

Definitely do the Dyno test. I remember when Rhodes were the lifter to have. I thought they were gone. Johnson lifters have a lifter that bleeds off similar to the Rhodes. They recommend nothing more than 30w. As thinker oil slows down the bleed off and slows down the pump up. Chrysler was using VLA( variable lash adjusters) lifters on overhead cam engines. Thin oil. 5w-30.5w-20.