ROLLER ROCKERS-DO THEY REALLY WORK? HOW TO: 350 SBC POWER MODS-TIMING, JETTING, SPACERS & ROCKERS

FULL DYNO RESULTS. DIRT CHEAP 350 CHEVY POWER MODS. HOW MUCH POWER ARE ALUMINUM ROLLER ROCKERS WORTH? DO ROLLER ROCKERS REDUCE FRICTION? DO ROLLER ROCKERS ADD POWER? HOW MUCH POWER IS IGNITION TIMING WORTH? HOW MUCH POWER IS CARB JETTING WORTH? HOW MUCH POWER IS A WILSON CARB SPACER WORTH? CHECK OUT THIS VIDEO ON A SMALL-BLOCK 350 CHEVY WHERE I DEMONSTRATED THE GAINS OFFERED BY CHANGES IN IGNITION TIMING FORM 20 DEGRES TO 37 DEGREES. THE DYNO ALSO SHOWED THE GAINS OFFERED BY CHANGES IN AIR/FUEL RATIO FROM CHANGING THE JETS THE HOLLEY CARB. ALSO TESTED WERE CARB SPACERS AND ALUMINUM ROLLER ROCKERS. CHECK IT OUT.

[@802Garage]

Your channel is so valuable it's crazy.

[@richardholdener1727]

I appreciate that!

[@joealbert7773]

I ran roller rockers on my race engines (sprint car on dirt) not so much for any gain in power, but for longevity. I alway figured they didn't do much for power.

[@Gregoman89]

I think they tend to float less at high rpm’s

[@2003evodave]

Also depends on how high you rev your engine, bet 6000rpm and up would be more beneficial with rollers.

[@george1la]

These dyno tests are reality of what does and does not work, and if it does what happens. I bought roller rockers, 1.7/1 for the free extra lift and because of the roller tips. Roller tips prevents side loads on the valve from the rocker. I want power and longevity. They have been in my motors for years now.

[@alltherpm]

Longevity, and reliability I would stay stamped steel If ur not racing, less parts to explode and put needle bearings though ur engine

[@michaeldose2041]

@@alltherpm What you are saying is ALL roller rockers are prone to failure. What George is saying is he has been using them for years without failure. Clearly, roller rockers have an advantage in preventing side load on valve guides, which is the number one cause of oil burning and valve failure. So one guy is talking from experience and sharing his success and the other guy is just talking out his azz. I let you figure out which one is which.

[@alltherpm]

@@michaeldose2041 anything with needles can fail, on side load with a stud will always happen unless u run shafts to keep them sturdy, but on street engines with soft springs is not really a huge issue

[@michaeldose2041]

@@alltherpm Yeah anything with an engine, and gears CAN fail. LOL ''but on street engines with soft springs is not really a huge issue'' Oh, okay, there is an issue but you should ignore it, because you cousin's buddy had an uncle that knew someone that had needles explode and ruined his engine with 100 miles on it. Every heard of a roller tip rocker? Now go put your dunce cap on and sit in the corner.

[@alltherpm]

@@michaeldose2041 I've seen lot more lifters send needle bearings through engine, we had to call jesel to ask how many they put in them,rockers I've seen had alot break, but no needles explode, & y they don't wear cause they never turn enough, y there really not worth the money on most street engines with small cams under .575 lift, in my opinion which never claimed to no anything, just truth or keep my mouth shut

[@slowg9706]

So similar power to the 5.3 ls but more torque, without any significant mods, thats pretty cool for such an old motor.

[@gearheadE30]

Finally, data with no ratio change on roller vs stock rockers. Been curious about that for a long time. Love the channel, I continue to learn a ton and appreciate that it is all based in facts and data.

[@richardholdener1727]

Bear in mind that this is not an absolute test-it just did this on this motor

[@BOOT]

If the lift and springs were more aggressive, then the stamped rockers may have lost power vs rollers

[@gearheadE30]

@BOOT @richardholdener1727 yep, definitely understand that every engine platform and parts combo is different, but still very interesting to see as a point of reference.

[@krusher74]

IMO rollers have never been about power they are a wear reducing item.

[@SpecialAgentJamesAki]

Yesss I’ve been waiting for stamped conventional rockers vs cast roller

[@danmyers9372]

They won’t add much on a low power engine like this especially without a spring upgrade.

[@SpecialAgentJamesAki]

@@danmyers9372 that’s what I figured! Just wanted to see it tested! 😁

[@BOOT]

Still the roller rockers will drop oil temps bout 20degs, at least my stock cam L98 did with 1.6 rollers vs 1.6 stamped. Also the GM 1.5 stamped rockers in this test, were the newer SA-self-aligning rockers. They are more accurate/consistent ratio vs older SBC stamped rockers that were often 1.4

[@SpecialAgentJamesAki]

@@BOOT good point! I run rollers because I like to run big cams and wind my engines out but there are other benefits like you mention!

[@kenmoule825]

​@BOOT More oil flow means more heat taken away for cooling the spring and retaier better.

[@blueyhis.zarsoff1147]

oil temp drops ( big blocks) with rollers, so friction gone hence there is free power with bigger springs and more revs there is more free power. Typically more accurate ratio in many cases

[@brentvalentine]

That is exactly what I thought roller rockers were for. Less friction during operation and less wear on guides and seals.

[@recoilrob324]

The biggest problem I've found tuning performance engines is that the idle mixture adjustment screws are unresponsive because the throttle is open too far and the transfer slot is feeding the fuel. Transfer system is fed by the idle jet and bleed but above the mixture screws so if you can turn the screws in all the way and the engine still runs...you need to close down the throttle plate enough to get off the transfers so you then have control with the idle screws. Sometimes you can do this by cracking the secondaries or end up drilling holes in the plates to get the idle speed you want with the plates in the right position so you have idle control. This will cure much of the stinking exhaust that most performance engines make and also greatly help the fuel economy as well as keep the plugs from wanting to foul. At cruise the vast majority of performance engines with large carbs are not running mostly on the main jets...they're still on the transfers so rather than trying to jet the mains you get better economy by opening the idle air bleeds to lean down the transfer side. This also leans the idle mixture so you need to adjust the idle screws to compensate. I open the idle air bleeds until my idle mixtures need 2-2.5 turns of the mixture needles with the throttle plates closed and off the transfers. Then tune the mains as normal. My last 454 with dual 500 AFB's easily got 20 mpg's on the highway in a 78 Z-28 but the carbs took a LOT of leaning on the idle and transfer circuits to do this. As installed the car got the usual 8-10 mpg's that everyone says Big Blocks get....don't believe it! Get the engine on the idle screws....meaning you can shut it off by turning them in and run 10+ degrees of vacuum advance on manifold vacuum and even large engines can get good efficiency.

[@bens8696]

Very interesting… I hear new vrs carb has provision for idle air

[@derekmelyndadeckens2982]

That all sounds great and I'll apply what I can, but even computer controlled fuel injection big blocks don't get 20mpg on the highway.

[@richardholdener1727]

we adjust idle speed, many perf carbs have rear holes in secondaries, we can get them to idle on the idle circuit and 20 mpg from a 454 with dual quads?

[@recoilrob324]

@@richardholdener1727 Yep....had 2.75 9" Ford with Richmond Super T-10 and ran from PA to Atlanta and back averaging a little over 70mph and got 19.8 mpg's true. Dual 500 Edelbrock AFB's on their low rise dual plane manifold, 9:1CR, large valve Oval port small chamber heads and 224/224 cam. Good running package up to 6000 rpm. It's easy to make power on a dyno.....you ought to try a gas mileage experiment which is a little tougher while still having good driveability. Even if you have extra idle air through the secondary plates (or primary or PCV feed) the transfer circuits are normally WAY too rich for good mileage. One fellow said to run 13.5 A/F which is nearly a full power mixture...we run high 16's or more at cruise if the mixture distribution will allow it which was part of the reason for the dual quads on the 454...each cylinder had a fuel delivery point nearby and both AFB's opened together with no progression. This intake system was able to run leaner than a single spread-bore two plane while maintaining crisp throttle response.

[@Texassince1836]

With my quadrajets I drill out the idle bypass air until I get a proper idle throttle opening

[@orangetruckman]

Love the data! Appreciate everything you do!

[@mph6502]

Very valuable info! Years ago I read a Car Craft article about running a higher ratio rocker arm on just the intake valve of cylinders 1,2,7 and 8. The thought behind it was those cylinders are farther away from the carb. I've searched and can't find it now, I more than likely still have the magazine somewhere, but would love to see someone try to duplicate it. They did a baseline test with 1.5 on all 16, then 1.6 on just the intakes valves on the outside 4 cylinders. Then they did 1.6 on the other 4 intake valves. They also tried it on both a dual plane intake as well as a single plane.

[@richardholdener1727]

I've run that type of test-it works best with 1.6 on all cylinders

[@dh2360]

Always enjoy your content, something to learn on every video.

[@Texassince1836]

Every 2hp gained in friction reduction is 1 hairdryer of heat that isn't in the oil or coolant. The gains from the roller rockers are friction reduction

[@keithtobin5369]

Thank you Richard for all that information

[@SquarebodyStuff]

Thanks again for some good wholesome real world testing on a real world power level. You're living my dream bud.

[@richardholdener1727]

More to come!

[@SquarebodyStuff]

@@richardholdener1727 I would love to see more of the m90 on a 454 with a carb. I'm working on building a mild 454 for my daily 79 c10.

[@orangetruckman]

@@SquarebodyStuff I’m jealous! A daily driver big block, now that’s living a dream! My 78’ 3/4 ton 4x4 with a 454 gets about 7 mpg on a good day 😭 it’s a far and few times I get to drive it.

[@SquarebodyStuff]

@@orangetruckman my daily commute is usually less than 10 miles.

[@GaryH-pw9cm]

On a 427 W with Ford X306 aluminum heads I used stock Ford stamped rockers, stock profile roller hydraulic cam with Comp cam stud girdles, ARP pushrod guides and they have working just fine for several years. The reason for using the stock rockers is because they are quiet unlike the roller rockers used before that made a lot of noise. I would rather have the quiet than any power gain from the roller rockers. 😊

[@ubethejudge69]

yah i agree. sowing machine noise from roller's are annoying.

[@keithfilkins2043]

Love your channel and these kinds of dyno work! Actually I like it all,thank you for what you do!

[@richardholdener1727]

Thank you very much!

[@captainrawn]

Some really good info here thanks Richard!

[@mark_osborne]

Great stuff Richard !

[@alertgasper]

Competition Cams loved to say their roller rocker arms added 15 hp...but if you read the ad, they mention a cam swap as well.

[@richardholdener1727]

we have seen gains like that on other applications

[@ecc5119]

I appreciate that you run the turbo cam in this test.

[@richardholdener1727]

#everycam

[@ScottBuchanan84]

Good info as always 🙌

[@3800TURBO]

Geometry, rigidity and valve tip and guide ware are the main reasons to upgrade rockers but basic factory bolt or stud mount still flex and move about with decent spring pressure. Some add a girdle to join all the posts, most opt for shaft mount rockers. Big boost cars need steel exaust rockers as alloy can break trying to open the valve.

[@bobocaterpillar3697]

cool video! this is the interesting stuff! REAL world stuff !

[@syntaxerorr]

Great video. Love your stuff. I wish I had access to a dyno when ever I wanted!

[@richardholdener1727]

all it takes is $ to have access

[@ubethejudge69]

enjoyed it!

[@shadowopsairman1583]

Full rollers reduce friction loss but they do weigh more so you need stronger springs

[@dylanfinch6186]

Yeah, I think you want to do springs with the rockers. They look sweet though.

[@markgiraldes4062]

I’ve always thought temperatures would probably be cooler with rollers along with durability ? Going over the reasoning of locking out the distributor for beginners would be a great learning curve also Richard great video as usual thanks ! 👍😎🇺🇸

[@justinwhitaker3537]

Thanks!

[@68mustangmustang77]

Yep some great basic info that years ago left us chasing and spending $$$ . This was great stuff on entry level performance . 👍🍻🇦🇺

[@GaryH-pw9cm]

In the past used Rhoads lifters for more low end power. But they do make some noise. If you don't mind the noise they work great.

[@92stanghauler]

Great test Richard! Following up on our recent unchanged RR ratio discussion, stamped factory rockers can have inconsistent geometry and therefore lower actual lift vs advertised(advantage aftermarket). RRs weight more which can offset gains, some(advantage factory). Stamped rockers with mild cams and lighter springs are not going to accelerate valve tip wear to a noticeable degree so longevity is less of an issue when you factor in the risk of bearings in the motor from RR failure(advantage factory). I think in the end, a 350hp 5,500rpm combo just doesn't benefit enough from roller rockers vs the investment unless a change in ratio accompanies the swap. Thanks for confirming my assumption. But...run the same test with a higher lift cam(.550+), AFR195s(450-475hp) and a higher redline(6,000-6,500rpm) and see if it matters at that level? hmmm :)

[@lukesimeon5756]

Good test thanks

[@richardholdener1727]

Thanks for watching!

[@niknasstie]

Never knew of the way to tell there was a difference in seeing primary vs secondary fuel flow. Now I have to look into that

[@richardholdener1727]

fuel turbines read the flow for each fuel line on the dyno

[@waltrogers9770]

Roller Rockers are more about durability than power in my book. Ratio gets you your power

[@terrylarotonda784]

Like your show. Just watched you Dyno the 375 396 great work. Now to my question, I cannot find anybody who has dyno a 1966 Pontiac 389 tripower! Would love to see you do this for a stock set up. I ordered a 66 GTO with that engine back in 66. It was a real monster for the time. Would greatly appreciate the real dyno numbers. Thanks see what you can do. Again keep up the good work,

[@thisisyourcaptainspeaking2259]

Dyno-mite! ;) I've found screw-in rocker studs are good for similar gains.

[@richardholdener1727]

these had screw in rocker studs

[@sharkinstx]

Heck yes they work!

[@michaelallen2501]

I need you to do me a favor and test the Trick Flow 21° Gen X 185 (54cc combustion chamber) heads on an LT1 already lol. Bonus points if you pair them with a Tick Performance stage 1 blower cam. I know, every cam is a blower cam but that's what they call it in their catalog.

[@bens8696]

Hey Richard sorry I’ve been missing the chats… Great video! Nice little motor there. Think cam is biggest limitation at this point? 1.6s might give another 10hp or so? Or just go bigger?

[@mikkokuorttinen3113]

It's nice to hear from you Richard and from the sbcs! It's just the right season for this video, as the driving season is about to start here in northern parts of EU. Thank you very much! I wonder @ what rpm do you measure the total timing? I also have got a stock L98 here. Were those 113-heads stock or ported? Looking at the hp/torque curves in your test, the installed cam must've been close to the stock. I'd like to know how much of hp gains to this combo would just a cam swap make?

[@richardholdener1727]

The timing is locked-so you can measure it at any rpm. 113 heads were stock.

[@dannykichar9066]

Richard great video can you do this on a 347 ford engine I'm about to build one

[@dylanfinch6186]

I love the look of those rocker arms and want to put some on my 350, but I think you'd want to do springs and lifters as well as a cam all with that change to really see the benefits.

[@richardholdener1727]

rockers need springs

[@xcandiottix]

Thank you for the nod toward how you go about the tuning procedure!

[@mikef-gi2dg]

First thing...YES I want to see more testing like this. I might never get an engine on a dyno so this helps a lot. I have never tried locked out timing on my mild street engines. I would imagine it would be hard to hot start, with detonation, but I might be wrong. At what point would locked out ignition be practical? Moderate street/strip, hot street/strip, wild very large cammed motor? Have you tried the MSD 6 ULTRA bluetoothed ignition boxes yet? Keep testing.

[@richardholdener1727]

You are right, locked distributors are not great on the street-hard starting with 35 degrees of initial

[@bigandlittlecountry]

on a setup like this, what do you think a 1.6 roller would have done or gained?

[@johnstaley2573]

If you were going to see what changes make on the dyno it might have been interesting to start with stock exhaust manifolds.

[@save16thave]

Great video. I know this information works for every engine, but I'm not gonna lie, when one of your videos pops up I always hope it's Ford related.

[@richardholdener1727]

I have lots of ford vids too

[@save16thave]

@@richardholdener1727 I know, that's why I watch your channel. I appreciate all the great Ford content.

[@IllegalC4]

Great vid rich. Always appreciate the info. Im almost done building my 383 sbc. How do you think it will do on power? 383ci, afr 195 heads, xm276r cam, 18cc dishes pistons around 9.5:1 CR.

[@richardholdener1727]

what intake

[@danielamosjr.2138]

I would love to see what the difference is in that spacer VS a 2in 4 hole HVH super sucker spacer, I have one on my drag car and it increased my throttle response tremendously just curious about dyno numbers

[@tautog11]

Craftsman stubby FTW!

[@Guns_N_Gears]

More more more!!! 1.5 to 1.6

[@martyjohnsonozarkoutdoors8198]

Im curious if a guy could use a msd cam sync distributor. And a crank sensor 5.7 vortec front cover. And wire those to a stock 6.0 engine controller. And use an intake with ports for injectors. And a cable controlled throttle body. And put the individual coil packs on it. Would those things be able to all work together. 🤔

[@ericdemo5910]

Here's a SBC test that I haven't seen anyone else do, including the EM crowd when they take over Westech: 4-pattern cams - Real gains or marketing hype?

[@richardholdener1727]

Westech already tested those

[@danieldelpha1315]

Thanks for getting a sbc back on the dyno

[@tuffsnuffy]

I remember reading in an old magazine article that roller rockers were worth about a 30* drop in oil temperature. If that’s true it would be worth it to me just for that.

[@lcxu1051]

I've always found a 2 inch carb spacer to work best. I know you have a MSD distributor in it but would it help to also fit a MSD spark amplifier to like a 6AL MSD unit or the more modern version of them.

[@richardholdener1727]

You have to run an amplifier with the distributor (it's not a ready to run)-we have a 6Al or Digital 7 on the dyno. A carb spacer effectiveness is application specific

[@lcxu1051]

@richardholdener1727 no worries. It must just be the engines I've built then that always seem to work better with a 2" spacer over the 1" spacer by increasing the plenum volume under the carb with a single plane inlet manifold in the 4150 carb style. It's why I'm going to use one straight up on my LS1 build. Using the holley midrise 300 137 manifold and 2" spacer plate under a 1000cfm throttle body.

[@albr6770]

I didn't think a four hole spacer would make much difference on a dual plane. I want to use one on a Edelbrock Torker.

[@samthing4thetrack806]

the old school rockers, ha, yeah I think the designers actually did do the engine eering on the cost vs benefit of the design, but wow is it ever the most unsophisticated piece of that generation of motors. I am very surprised there was no change in performance in some way. there certainly is less friction and wear potential over time to use roller rockers, and as you suggest they need some ratio change to be a performance swap.

[@rafaellastracom6411]

I´m curious, why would you think roller rockers would free up some power?

[@smiley19912]

Todays E10 gas has a stoichiometry around 14.2 , 12 to 1 is still on the rich side for an NA engine. Lambda .89 would be around 12.6 to 1, I'm sure it would have picked up some more power , might try going as lean as 12.8 or lambda .9

[@richardholdener1727]

you might not be understanding how the meter works-the AF numbers were given on a gas scale-and the change in AF showed minimal power gains-so you being sure is not the same as the actual results

[@smiley19912]

@@richardholdener1727 So this was via flow turbine and not wide band.

[@mikeeaton9822]

Hey guys I'm old school but was taught on a holley the front jet should be 10 lower than the back jets. But it's also been 35 years since I've had or even fooled around with a holley too.

[@grandmasmalibu]

Still basically works. Usually the primary has a power valve and the secondary side does not. That equals about 10 jets difference.

[@thisisyourcaptainspeaking2259]

​@@grandmasmalibuI understand your point if you also say the correct power valve adds the difference.

[@hfr_ford755]

Just helped a buddy tune his holley and ended up having a 10 jet spread front to rear so it still holds true 👍

[@shadvan9494]

the best way to tune one i have found, is with a wide band O2 sensor in the exhaust. for the primary side is in the carb, at cursing speed. with the light throttle so the power valve doesn't open you want around 13-13.5:1 for be fuel economy, power and emission at cruise, its funny how all of those happen at the same time. So jet up or down until you get there. then same process but watch the AFR as you accelerate, but do not open the secondaries, it should drop in to the 12s and you should not have any hesitation, if you may have to adjust the power valve opening up or down depending on if it bogs or hesitates. if it goes lean as you tip in to the throttle, open the power valve earlier. basically, you want your power valve to open as late as possible without going lean as you tip in to the throttle, this is for best fuel economy and will vary depending on the vacuum your engine makes. after that, its all about full throttle, add or remove jets to hit around 12-13:1 at WOT. some carbs have adjustable low and high-speed air bleeds, if you find it going rich or lean as you accelerate at WOT then you can adjust the air bleeds as necessary. it best to get a baseline on a dyno. but just tuning the carb on the dyno won't get you the part throttle cruise or power valve opening adjustments. but for the most part, yes, the 10-jet size difference front to rear is because of the power valve. one other adjustment is when the secondary's open, no an issue on double pumpers, but important on vacuum secondary carbs, basically the light the car the soon you can open the secondaries and not have it bog, the heavier the car the slower you want them to open. they are adjusted by swapping the springs in the diaphragm housing. a dyno will get you close, but tuning in the real world is a lot more involved.

[@bw3506]

Do y'all think the roller rockers would show improvement on more aggressive cam and higher spring pressures?

[@jonnyszewczuk6452]

You sure thats not a ZZ4/603 with a different intake making those numbers?

[@krusher74]

Should you not get fuel air ratios correct and then test differant timings? and whys is the spark advance locked?

[@richardholdener1727]

we ran a locked distributor-it is what we had. As long as AF is safe to run timing test

[@christiandore7518]

Where would you have seen the changes if you had gone from 1.5 to 1.6 either on intake or exhaust or both?

[@richardholdener1727]

maybe through the whole curve, but sometimes on top

[@Rch5.0]

Funny im in your trading course and these days where bad for me also but the worse part is i didnt obey my stop loss and had a huge loss and held a loosing trade way higher because i was hoping we would reverse at ath so i have to re focus

[@wastedwhiteboy2462]

Id like to see some tests with an Olds 455.

[@richardholdener1727]

me too

[@HOTRODMONZA]

I get DIZZY hearing all this stuff! I just want a few more CHEAP PONIES out of my GEN 1 SBC I guess AFR Heads next and now push it up to 1.6 on the Rockers?

[@drewweber8155]

Hey, just watched your supercharged 4.6l Ford. I was wondering how much it would cost to have that built right around 550hp. I'm doing a midtravel 01 F150 and have no places nearby who could build. I'm gonna have to pay shipping regardless.

[@richardholdener1727]

check with shops in your area-I don't build motors

[@rotaxtwin]

Ah, sometimes a good old SB Chev story hits the spot. Goes to show that a 650 cfm carb pretty much covers it for a lot of street engines. You could have put a 750 on there and it probably would have bumped the power up a tad but not worth the expense for most folk.

[@richardholdener1727]

I doubt a 750 will add power on a 340-hp motor

[@1gbayfisher]

No, it would add zero power.... The carberator's purpose is to add fuel, if there is enough fuel, its good, adding more fuel if the gine doesnt need it is a waste, amd adds nothing.

[@rotaxtwin]

@@1gbayfisher Wicked !

[@rotaxtwin]

Ah but it might! You never know til you test on the dyno!​@richardholdener1727

[@MrGsxr10001]

I"d like to see you dump the oil and fill it with full syn race oil. Now that would be interesting?

[@richardholdener1727]

I have oil test vids up

[@scotthatch4548]

One of the funny things I have found is that that type of spacer is happier upside down on a dual plane intake manifold

[@richardholdener1727]

sometimes

[@born2wrench]

you shouldn't see any change in HP by going roller rocker . however if you could see it... there is less friction going roller.. but we all know this .

[@utahcountypicazospage5412]

at higher rpm roller aluminum is better if not much cam then no point to change

[@Foryourinfo369]

You can use self aligning rockers WITH guideplates?!!!!

[@richardholdener1727]

not ideal

[@Foryourinfo369]

@@richardholdener1727 I thought I could get away with something new! Another great video Rich thanks

[@driverjamescopeland]

I'm not surprised in the slightest... especially with modern oil, in an engine that's not deep into 7k RPM territory.

[@alanwrenchgarage]

Hey everyone

[@shadowopsairman1583]

I missed it

[@dondagy9109]

Isnt that a no no, using guideplates, and self aligning rockers?

[@richardholdener1727]

yep

[@GaryH-pw9cm]

On stock rockers guide plates work great. Also you can set the stamped rocker tips in the center of the valve stem.

[@brentbuxton9570]

I'm guessing there's also no advantage going from solid tapit to roller lifter. Added weight negates any gain.

[@richardholdener1727]

THIS STOCK CAM IS A HYD ROLLER.

[@MrGsxr10001]

The rokers for sure would not make power, the real gain for them I think would be throttle responce and less wear and tear. Maybe a faster reving motor and would not show up on the dyno but might be in the feel of the car on the street. Or butt dyno if you will... LOL!

[@richardholdener1727]

faster revving? Throttle response?

[@Patrick-xd8jv]

Unless the factory rockers have a true ratio lower than 1.5 I have no problem believing you’re outcome. In theory the guides should last longer.

[@hardhead7056]

POWER? You just said ,"it would definitely change when increasing rocker ratio".. BUT. The other day you told me that ratio changes alone don't work that way. Basically saying my suggestion was worthless.. Soo. Which is it?. Make up your mind.

[@davidciesielski8251]

Ask the valve guides how they feel.

[@richardholdener1727]

with a stock cam and stock rockers-they last forever

[@davidciesielski8251]

@@richardholdener1727 It is so funny on my lt4 I did the trunnion upgrade and on my bb chevy propane trucks I did rollers because they idle so much and pump at 1200.. I was worried about the rocker pushing the valve outward as the rocker sweeps down... ?

[@Jim_Lawrence]

So what you're saying is more displacement, more cam, more head and more intake and it would pick up power. Interesting

[@antilaw9911]

Lol

[@FloydODB]

Did you test the actual ratio on the rocker. Id bet the roller freed up some HP but you lost ratio

[@richardholdener1727]

I doubt that is the case compared toa stock stamped steel rocker (which definitely varies ratio during its travel)

[@FloydODB]

@@richardholdener1727 have you ever checked one? Check valve lift 5 oem stamped steel to 5 brands of rollers. See what happens

[@dredreofficial]

Can we buy motors from you

[@richardholdener1727]

I don't build motors to sell

[@danielmendricks7205]

Roller rockers are more about wear!

[@larryburns4605]

Test actual ratio of rockers will surprise you .

[@richardholdener1727]

have many times

[@thomasbradley7844]

Well they are far better then stamped rockers

[@donaldpowers3314]

Why watch and not like?

[@duanepayne1805]

Yes, they really but not any better than factory rockers.

[@paull4659]

I wonder how people with epilepsy think you blasting strobe light in their eyes?

[@patrickwendling6759]

Thank you for your knowledge and videos USA 🇺🇸 TRUMP

[@Hallz999]

PHILLY DRIVER ? ... BOSS ON INTAKE 4NITROUS like sneeky distrib look family2 chivelle

[@paulthesoundguy1]

It’s super dumb that you point the timing light at the camera on multiple occasions…sorry

[@grandmasmalibu]

Build pile of shit, set timing right, forget about everything else.

[@danielmendricks7205]

Carbs are a stupid mod!

[@JetBlackmf]

would a syntron show up differences between roller & stamped rockers of the same ratio ? I never looked at rockers as giving more HP unless you upped their ratio.

[@richardholdener1727]

it would show changes in control-not power

[@JetBlackmf]

​@@richardholdener1727 I was looking at the syntron as a way of finding out what the roller rockers might offer you in a straight swap. A straight swap may not offer any appreciable improvement in control as well as no HP gain. * * without adding thicker studs or other upgrades , save that for later ;)

[@FASTFATBOY]

What cam is in it? Did I miss it?

[@richardholdener1727]

unknown-we think stock