I Answer Questions And Say Dumb Stuff

I answer questions from viewers and do my best to answer them correctly. 

[@peskypeet]

"I say stupid stuff" You're kill'n me man. I also love these kinds of revelations from Pete Harrell.

[@tking7513]

The "cam part # only" gets me too when I'm wanting to answer a question or offer help and I don't know every shelf cam spec. Along with maybe getting just half the specs - and they're all important to understand the actual cam.

[@Fatt-billy.racing]

Thats really good stuff. If your heads are to big just put the bottle on it lol

[@GrandPitoVic]

I emailed you exactly the same question about the 821 Ls3 head. N/A build. Did I need to port my heads. Thank you for the info sir!! The answer is no. Cool, it will save me money!!!

[@r6duck]

More great knowledge, and free. Thanks

[@dondotterer24]

I always wondered why the smaller cams make good power on the LS3. Now i know. Thanks Eric.

[@mikebellaire3195]

I was referring to 4 valve on 250 and 450 motocross bikes. It’s no easy feet to leave me slack jawed and speechless. Thank you so much. My dad and I enjoy your videos very much.

[@jakeblack4095]

Thanks for pointing out the dyno RPM test range makes perfect sense. Lots of keyboard know it alls out there

[@ktsaylor5947]

LOL - I enjoyed your Frankness in responding to those questions ! You are obviously right, especially in the WOT Dyno starting at 4k, maybe 3.5k. Now let me be the dummy for a second - In considering changes to my Gen 1 SBC in my 66 Corvette, I am ALWAYS considering responsiveness at Mid/Low range RPMs (let's say 1.8k - 2k) as a key criteria. I've heard it 1,000 times - "Cant do 'driveability' on the Dyno". I get it. But I still want some manner of testing to help choose Heads/Cam changes to gain in that PART Throttle Response at 2k RPM range. As of now - i just have to extrapolate from the dyno results we can get.

[@MarineGrunt]

The most important thing you said was " Charge money to answer questions " . People will ask you questions , take your time , then spend their actual money with somebody else . If you're not charging people for your time ....all you have is a hobby .

[@stevenhobbs709]

Thank you Eric, a lot of good info, appreciate your point on low rpm dyno pulls.

[@paulshurmon138]

Thanks for the video.

[@johndevries8759]

Tell it like you see it Eric, thanks for the info.

[@GrandPitoVic]

Thank you for your time and experience Eric.

[@eddiebranham8070]

Great video keep them coming.

[@peterchristlieb]

Those World Merlin Grumpy Jenkins heads were fantastic on the flow bench but Jezus! They weighed about 95lbs each!

[@lcxu1051]

I was very impressed with the exhaust porting only. This shows that the intake to exhaust % is very much a major player on the flow characteristics of an engines performance. I wonder how high that % can go before it has a negative effect on the engines performance

[@ZMANPERF]

Excellent informative video.....

[@Duster_Garage]

Thanks Eric for answering my question. Not quite what I was hoping for (big cfm gains), but the honest truth. By the way, I always watch to the end. Thanks again.

[@kevinclemence4661]

Watching further and with regards to customers quoting part numbers rather than cam specs, the same thing happens on the forums. Not just cams but intakes or carbs or whatever. Unless you've been there and done that, the PN is practically useless. I don't recall the PNs of the cams I've HAD let alone a dozen popular grinds.

[@stusue9733]

Your comments about specing cams reminds me of Carroll Smiths advice for specing springs(suspension). Tell your spring guy the your heights, weights and use then let him work it out, he's going to have forgotten more about springs than you'll ever know.

[@Masterapprentice77]

Appeciation from Western Australa. Love this channel!

[@davidreed6070]

The 823 head is to big on paper but they work awful well.

[@TitusPerformance]

I like the last part about 2000 rpm torque, We get the same question and I give the EXACT same answer. Pulling a trailer up a mountain..... with your racecar! :) Have a great one Eric!

[@j.finesseflights1403]

Gr8 info! I've been fartin around with small engines and that bit of info about small cam with a large head was good to know!!

[@pontiac411]

In my early days i talked to 5 different people at Lunati and got 5 different cam specs from 248 at.50 to 280 at .50 and lsa from 110 to 114 all for the same engine combo.

[@flinch622]

Pre covid, lead times on big industrial cast iron stuff [multi ton pieces] was like 10 or 11 months. I can't imagine what it is now... could cast iron heads ever make sense again? I mean, the premiums willing to be paid on some heavy industry items just eclipses what vehicle manufacturers would look at competing with and gas engines with iron heads may well be over.

[@kevinclemence4661]

I can appreciate your reasoning for not porting cast iron. It should be said however that Charles Servedio is still sailing that ship. There's also one other reason why some of us might choose to port cast iron. That's what we had to start with (RHS Pro Torker and long since discontinued). It appeared to be a cost effective means of getting better heads although, admittedly, it may have not been the wisest choice. Like your vids Mr W.

[@jcnpresser]

Yep.

[@peterchristlieb]

I have a set of Iron RHS 235s (Pro Topline) I bought years back for $300!per casting. They outflow quite a few really nice heads. Luckily I’ve got a guy locally who will still do Iron.

[@tking7513]

@@peterchristlieb What's the city ? I may need them, I have about $175 in a new set of Sportsman ll and I'd pay good money to see them fully ported.

[@peterchristlieb]

@@tking7513 Los Angeles. Where are you?

[@gothicpagan.666]

Why would you spend time on lumps of Iron. Unless your racing a FIA historic appendix K machine, you just wouldn't. Suppose only other exception would be tow truck heads to get a few more MPG for no money

[@pontiac411]

Few to no porters I know port cast iron, the only pair I ported were my own DBL humps in the late 80s cuz I had no dollars to pay someone else.

[@timsprojectcar1875]

My wife says I say a lot of stupid stuff.

[@pizzandoughnutspage7817]

Great video appreciate the time Eric

[@No1414body]

Hmm last question/comment about loading the dyno at 2000rpm, race engines never run at 2000, they are designed to run at peak, so to build a max torque at a low rpm you are looking at totally different design parameters

[@mjb242]

Great video Eric!

[@jmflournoy386]

good on ya. I suggest that a low lift cam can have long duration and a long easy nose lots of time in heavy vehicles you are already in low and need lots of throttle especially 73+ smoggers with no low end (however secondaries are not fully open most of the time

[@GrandPitoVic]

AND " IM NO SUPERMAN"!!!!

[@zerogmopars746]

Love the videos. Can you comment on exhaust lobe opening, timing and lift. Example: How opening rate against cylinder pressure and spring pressure affects the valve train, valve and seat temperatures between a fast and slow opening profile, exhaust pulse intensity, cylinder blow down, valve lift vs spring pressure (can limiting exhaust lift result in slight power increase vs, high open spring pressure?) Closing profile effects on overlap and valve sealing (not bouncing). I can't find much info on this subject

[@CJ5EVOLUTION]

I'm just waiting how much excuses will give the "experts" of why they didn't win, pop corn time.

[@jacksonbermingham2168]

You know what makes more torque say comparing to a LS size.. THE GM Holden has a vast torque range compared to Ls of similar sizes. i wish Holden/gm never gave up on their Holden engine for the LS because id believe it would with same rotating qualities and. Size and compression. Compete with the best push rod motors of same size. And sound better.

[@jacksonbermingham2168]

Yeh the head flows are vastly low . Compared to a stock ls head or a decent sbc

[@Link-we8so]

Ahh I'm not sure I agree with having a head that flows too much air for an engine. I'd like to see that test. I'm not saying you would get benefits but I don't think it would hurt. So long as the head design is good.

[@HerrPoopschitz]

*so long as the cam design is good

[@pontiac411]

17:02 i use the cam program that David Vizard developed early to mid 90s and although its more simplistic you end up with the same cam as modern day programs.

[@andrewkelly1225]

Got my popcorn! I have used his methods since before the infamous "128", as outlined in the original "How to Build Horsepower". I don't know if it gave me the "perfect" cam, But it always resulted in a very good cam. Wide range of engines SBC, BBC, 250 inline low compression six, Pinto 4 cyl, Always had strong torque over a wider than expected range and good mpg when the application was taken into account. (the 496 inspired by "Sledgehammer" got terrible mpg, but not bad when you considered what the performance was.) I am very curious to see how his design does in the contest. It would be nice if he was done optimizing his program for the LS... There will be those who will say he has said his program is not ready in order to minimize damage if he does not place well... I have no data driven response to that, so I will wait for results and learn along with everyone else.

[@JamesBower-l9d]

I learned something new today thanks, when is the beard challenge ?

[@russwalker33]

I have a question about brodix spec heads. First a little history, if I may. I bought a car with a 410 built by an old imca builder from Penn. That has brodix spch heads on it. Can't even tell you comp ratio or cam specs other than they have a dome and it's a solid roller cam. My question. Have you ever followed spch heads and what did they do? Thanks for the info on advance. Keep up the great channel.

[@lcxu1051]

We all do that.

[@gothicpagan.666]

Why all the hang up on LCA. Only seems relevant while testing. Have the same spec engine with the same lobe profile, just have different LCA's set when your grinding a cam. Once you've understood what worked best, you then grind different profiles to give the valve events and lift values that the valve train will allow. Never understood roller followers until there was a need to grind a negative radii. on a lobe just after TDC to optimise piston to valve motion rates, can't be done with a flat tappet. Never stop learning

[@scottk2342]

Have you ever ported a real deal Pontiac aluminum cyl head and if so what were the numbers thanks!

[@marianoleonel8914]

hi Eric? how are you? maybe I am wrong, but not necessarily, with a fixed cam duration more lift means more aggressive lobe, you can have 240, with .600 lift with a lazy flank, in other hand 240 with .550 could be a very "square" aggressive lobe with a ton area under the curve.. regards from Argentina

[@LukeSportsman]

I partially agree, thinking lobes of a flat tappet vs roller. But this is certainly still changing valve speeds too. Just at different portions of the curve.

[@kennyrmurray]

I watch all your videos all the way through. Does it tell you who watched or is it just basic? Btw Doo you port CI heads? 😜😜

[@kennyrmurray]

I can’t believe people still ask you that lol

[@altruisticscoundrel]

Any gif makers 6:50?

[@HerrPoopschitz]

@@altruisticscoundrel 🤣

[@garyhosier4765]

I just got my first set of aluminum heads. This just hit after installing the headers. Do you have any secrets to protecting any bolt threads and installing plugs in unused passages. I boogered the first thread of one header thread. Ran a tap through it and it was good. I’ve been freaked out about bolt holes and plugs. Do you use any special thread lube or lock tight? Is galling of threads an issue?

[@WeingartnerRacing]

You use antiseeze on ever bolt hole except the ones that need thread sealer

[@garyhosier4765]

@@WeingartnerRacing thank you. I actually used arp lube but I have antiseize.

[@stephenzadow3322]

Whats your thoughts on the stan weiss programs

[@GaryWhipple-q6w]

The camsha competitor s are starting to argue with each other online alittle.its been entertaining

[@powellmachineinc]

Who's arguing with who? I need entertainment!

[@arturozarate1752]

​@@powellmachineinc 😂😂😂😂😂😂😂😂

[@powellmachineinc]

@@arturozarate1752??, did I miss something?

[@arturozarate1752]

@@powellmachineinc I'm not sure, but Brian put out a video earlier, and he got a little stern, I guess you could say, in his opinion. Now I don't think he was pointing at any competitors mostly the trolls in the comments. That's the only thing I can think of, but that's why I laughed.

[@arturozarate1752]

@@powellmachineinc btw, Brian Salter

[@JAGMotorworks]

Can i run .608 lift with the promax 317 heads? Hr. Thanks

[@flinch622]

First number I found was 0.600". So... there's a little work involved? Digging further, some have gotten 0.700", but was that all longer valves or combination valve/shim plus cut pocket I do not know. Try that google thing...

[@JAGMotorworks]

@flinch622 yes I did thank you so much for all the insight.

[@jcnpresser]

I give you credit, you record a video, don’t edit stuff out during these talk videos. 👍

[@pontiac411]

27:34 Run as much lift as your wallet will allow. DV quote. Lift is like extra duration at the peak flow of the cylinder head.

[@V8Lenny]

Not so simple. DV will place last.

[@willrobb9520]

Two things: Daniel's accent is so much better than yours. That's real southern draaaawwwl. I'm in sarcastic disbelief at the content of the calls you handle. It's awesome (sarcasm again) that people think you memorize cam profiles based on part number. Wth?!?! I guess you're not really a guru if you don't memorize the lobe numbers.

[@Link-we8so]

Eric... Why don't you drive a Chevy?

[@WeingartnerRacing]

The ram is better.

[@Link-we8so]

@@WeingartnerRacing I agree and I drive one. But I figured you would be a Chevy guy. Is it a half ton?

[@Scubasteve22]

Hey Eric. I've heard you say before you use erson cams ....Have you had good luck or like their products?? Thanks

[@borismcfinnigan3430]

No he hates them and has bad luck with them, that's why he uses them....Duhhh