FLOW NUMBERS vs DYNO vs DRAGSTRIP ET SHOOTOUT: with the AFR LS3 ENFORCER HEADS!

[@DavidVizard]

Boy you really pulled this one off well!!!!!!

[@UnityMotorSportsGarage]

Thanks David! I cant wait until we get a real cam in it to make some good power! Andy

[@cockycarguylswayne2211]

Finally, an LS cam spected out by the elites

[@autonomous_collective]

So, when is the new spec'd cam going in??

[@UnityMotorSportsGarage]

Hopefully soon! Andy

[@cockycarguylswayne2211]

I’m tagging my race team on this one it’s going to be big my Detroit team has some of the fastest ls cars N/A

[@lukesimeon5756]

Great test Andy ... the attention to detail is greatly appreciated ... no games no gimmicks just an honest test thanks

[@UnityMotorSportsGarage]

Thanks Luke! I love doing tests like this as it is real world what you see is what you get.. Thanks for watching Andy

[@richardmoerke9329]

You killed it. No bull like DV says! Now the cam!!! I can’t wait for you guys to prove this point. I want to see this so bad I can’t sleep. This is a great team effort and hopefully you guys show all. Love it! 1

[@Gary65-fl4rz]

Really looking forward to the cam swap! Keep up the great work, much appreciated!

[@UnityMotorSportsGarage]

Yeah I'm looking forward to the cam swap also.. Thanks for watching and the kind words Andy

[@nickmurphy8542]

Love the comprehensive testing Andy! You, David, and the rest put a lot of effort into your builds and it really shows! Keep up the good work!

[@UnityMotorSportsGarage]

Thanks for the kind words! and for watching. We try our best.. Andy

[@donaldhalls2189]

Great job, thanks for sharing, all the best to you and your loved ones

[@bobbybelcher6800]

What you proved is how great the stock LS3 heads are ! No need to spend all that money for aftermarket heads !

[@UnityMotorSportsGarage]

They are really good, that is no doubt... I believe the Enforcer is a better head but is worth the money? Only you can decide Andy

[@RichieCat4223]

This is with boost. How much boost is unknown.

[@Scarlet_1971_cuda]

Great information. Love the end to end testing!!! What we all want to know.

[@TonysHotRodGarage]

Awesome video Andy! Lots of great information there.🏁

[@UnityMotorSportsGarage]

Thanks Brother! I love doing stuff like this... Andy

[@dalewarriorofthesea3998]

The high Port design is the major contributing factor to LS efficiency throughout all these cylinder heads Line of sight to the back of the valve trumps all the earlier low port designs from all the manufacturers with 1960's origins

[@UnityMotorSportsGarage]

You are exactly right. This port would have been considered a FULL race port of 20 years ago.. Andy

[@gordonborsboom7460]

An average engine today looks like a one-off race engine from 40 years ago. Such is the way of progress

[@aaronanderson6892]

Im anxious to see what the proper cam will do with those heads

[@UnityMotorSportsGarage]

I am as well.. Thanks for watching Andy

[@ShawnGilbert1967]

And the stock ones for comparison

[@mikedeal8659]

Thanks Andy. This was a great real world test. Comparisons get a little more complicated in the real world but that’s where we live. Showing all the results and explaining what you thought was going on is why I watch you and David’s channels.

[@frizzellracing]

Good video. A lot of people don’t realize a bigger portion of does not mean bigger numbers automatically. There is a reason Cleveland guys put epoxy in the heads. It’s about HOW the air flows not how much air it flows necessarily

[@UnityMotorSportsGarage]

Amen, that is exactly right! Velocity is key Andy

[@treyrags]

Do the two intake ports have the same centerline length? If not, volume (cc's) can't be used to compare the efficiency between the two.

[@UnityMotorSportsGarage]

They are almost Identical in Port length! Andy

[@Comet-hn3gm]

I will be watching. The cam swap has my interest.

[@overbuiltautomotive1299]

great video man!

[@UnityMotorSportsGarage]

Thanks for the kind words! Andy

[@joeinmi8671]

It was like pulling teeth to get a 110lsa cam for my jy 5.3 back in the day. Everyone thought the wider lsa was needed. 114 is just insane on a performance application! Especially with the stroker! My guess is it will end up with a 108-110, slightly less duration and more lift after dv and andy spec out a cam.

[@2HacksGarage]

Good video Andy, I like the real world testing after doing all your “homework”.

[@UnityMotorSportsGarage]

Thanks Brother! I like doing tests like this that can benefit folks.. Andy

[@tomschultz2833]

Hope to see the results of the new cam. Everything needs to be in balance.

[@Boostismyfriend]

Great video!!!

[@UnityMotorSportsGarage]

Thanks Brother! Hopefully we will have a cam to test here pretty soon! Andy

[@dondotterer24]

I agree on the camshaft between the two. If anyone has questioned it. They need to refer to DV's book. That's where I learned from.

[@markbulva4188]

OUTFREAKINSTANDING as always

[@UnityMotorSportsGarage]

Thanks for the kind words and for watching! Andy

[@jimmy_olds]

I’m an Oldsmobile guy, but have been playing around with small and big block Chevy’s the past couple of years. Much more ROI. Seems like when guys jump to the LS (and the subsequent evolutions) they rarely go back. The “not yet…” is where I was at a few years ago building Olds motors (I still love ‘em though, and have a 455 slowly coming together) Great video, hope to see what camshaft goes in and what the difference is!

[@stevennewman3231]

Great video keep it up. Not all hero's wear capes

[@garykarenmcgruther6386]

You have eaten alot of humble pie my friend. Thank you.

[@karlmoltzan6196]

Andy What were the results at the track before and after?. I can not read the time slip. Don't assume we know what was before.

[@UnityMotorSportsGarage]

You should really check out youtube.com/@Boostismyfriend?si=1ZA6x927u1ysNcyt Andy

[@psychoholicslag4801]

The LS head is an inline valve, mirror image copy of a 4V Cleveland. Even the bore spacing, deck height and oiling system passages are similar. Coincidence?

[@jonathoncouchey7151]

Port design is completely different

[@UnityMotorSportsGarage]

Yeah it's Completely different I was only referring to being a huge port and flows tons of air Andy

[@psychoholicslag4801]

@@UnityMotorSportsGarage I'm saying it's a thinly veiled copy.

[@funfun8095]

​@@psychoholicslag4801I guess you didn't read what you typed!? SMH You said mirror image!

[@MsKatjie]

No sorry very wrong, bye.

[@CLEEPER1]

Top end could be pushrod length/lifter preload variation?

[@UnityMotorSportsGarage]

No Sammy covered that in his video.. in fact he had to change the pushrod length to maintain the same preload! Thanks for watching Andy

[@TomSmith-cv8hk]

Were the AFR heads flowed before or after the deck was cut ? and were the chambers previously 72cc ?

[@echadmiyodea]

To me the drop off on the dyno curve looks to be a problem other than just the wrong camshaft.

[@UnityMotorSportsGarage]

We will definitely find out... Thanks for watching Andy

[@Torquemonster440]

I agree.. that was definitely a strange curve on the chassis dyno. 🤔

[@UnityMotorSportsGarage]

@@Torquemonster440 yeah and the only change was the heads... That is why we test! Andy

[@bcbloc02]

Any chance the ecm detected spark knock and pulled timing?

[@MsKatjie]

Nice job Andy and friends. You should revisit the Clevland, with modern heads and a few simple oil mods. cheers,

[@UnityMotorSportsGarage]

I will definitely build a Cleveland at some point for the Channel! I will definitely have to get Tim from DragBoss garage in on that one! Andy

[@MsKatjie]

Too good. Wish I wasn't half a world away BUT i love my place! Keep up the good work, Andy. You people are like friends, in the electronic sense. Cheers@@UnityMotorSportsGarage

[@Torquemonster440]

Awesome video Andy, very informative. That sure was a strange curve for the AFR heads on the chassis dyno. 🤔 Valve springs perhaps ?. .. airflow restriction of some sort ?.. definitely odd.

[@UnityMotorSportsGarage]

No before I took the heads to Sammy I pulled two springs and tested them.. they had almost identical seat pressure and open pressures.. compared to his springs he double checked the lifter preload.. it is what it is.. Andy

[@Torquemonster440]

@@UnityMotorSportsGarage Cool, thanks for the reply. 👍 I always appreciate your hard work and all the info you pass along to us. It's helped me make better decisions with my own builds. Cheers 🍻

[@OndreaS123]

can't wait to see it with a properly spec'd cam, keep up this great work, I'm looking at a very similar build for a drag/drive car eventually

[@travispfannmuller7717]

i love this idea and the test method but with that many cubes and big duration I would guess a more appropriate intake manifold would give the big valve head a bigger aadvantage up top and at the drag strip in such a light vehicle

[@UnityMotorSportsGarage]

Sammy has tested that! I believe he has tried a few different ones and the stock Corvette style has always been the fastest.. you might want to ask on his channel as I can't remember the ones he tested. Thanks for watching Andy

[@jeffwooton7138]

I plan on getting some for my 3/4T truck. They will be perfect for this 4x4. Coupled with that Howard's 270 cam, 110+4, and a clean trans and engine tune, it should be plenty enough.

[@rexwarrensr.9832]

I was a all motor guy not now I'm huge into power adder and loving it

[@rotorr22]

From one Ford guy to another, it's OK to like the LS motor, Andy. It's not a GM Vs. Ford deal anymore. It's american iron vs. the imports. Ford ,Chevy and MOPAR engines are our heritage and sadly, we are in the final chapter enjoying them. I run a 6.2 LS in my boat despite owning Fords exclusively on the street. I am not conflicted at all. Ford has nothing to compare in regards to the mix of displacement, availability, power potential and weight.

[@autonomous_collective]

Tire burnout smoke says NO HEADWIND. Same time slips = no change. When will the new spec'd cam go in??

[@UnityMotorSportsGarage]

look at the flags at the top end of the track.. The cam will go in when we get it in our hands. Thanks in advance Andy

[@rolandtamaccio3285]

Andy , why not a weather baseline to compare different days , as like DV's Mustang ,,, ?

[@68nitrostang]

What lobe sep would the new camshaft be ?

[@leonardfoster6252]

You never said how much the seat pressure was or the open pressure?

[@UnityMotorSportsGarage]

145lbs on the seat and 405 lbs over the nose.. Thanks for watching Andy

[@davidreed6070]

I think gm raised the short side to raise the air speed so they will still make power at low rpm.

[@daniellefraser2350]

Thanks Andy 🍺

[@UnityMotorSportsGarage]

Thanks for watching! This is fun stuff to me Andy

[@leonardfoster6252]

Btr cams, what is the name of them?

[@mxguy2438]

Tough to make a back to back comparison on a chassis dyno with a loose converter. I mean that motor could have been held at 7k rpm for the entirety of both pulls and your dyno chart is basically just mapping converter efficiency.

[@kylemilligan752]

If you change cams, swap the stock heads back on to quantify gains/losses

[@leonardfoster6252]

The combustion chamber on the ARF heads should be better than stock ones and the sparkplug location...

[@kylemilligan752]

The afr heads lost more than 11hp over 5400rpm on a 416 inch engine. Do the afr heads lose more or less hp on a 6.0/364 inch LS?

[@barrykennedy9947]

John Kaase alway said he built and designed heads on the dyno not the flow bench.

[@itseithergonnaworkoritaint7852]

Whatever happened to those guys that bolted LS heads to a Ford short block, did any of those guys get that mess running?🤔🤷😎👍

[@UnityMotorSportsGarage]

I couldn't tell ya... Andy

[@jim55282]

Isn't it the general rule that 10hp =.1? Also, if we compare the two curves for area under the curve ( work and rate of work) and not just peak HP, they looked fairly equal ... I'm not sure this was apples to apples either as the valves sizes were different. Not to knock what y'all did, just thinking out loud ...

[@raymondleathers5921]

I think you’ll find with todays engines the runner size is less important as far as being to big. Reason being is the long runner manifolds. I’m a guy that’s very cautious of runner cross section. I have a dyno shop and see many combinations roll through the door. The difference between a ported smaller runner 243 (232cc) and a ported ls3 (280cc) is like 15-20 tq at 3000-3500 and after 4500 it’s all the same. I will say they drive different. Smaller runner is snappier on the hit or part throttle but in a drag race there’s very little difference. Now put a single plane carb on those two and you will see some results

[@scotthatch4548]

The camshaft is ground on 114 but installed on a 111 lobe center so as far as the intake side is concerned it's a 111 lobe center camshaft ..... For the HP you are making the engine is using less than 250 cfm so I would expect the intake is the restriction to Flow ..... The nose over and you cutting the heads makes me wonder about port match ...with the new afr heads you have some high airspeed problem causing it to drop in power ... Something is not right in any case because the power curve with the new head is not a smooth curve and that's not because of the camshaft unless you are heading into spring bounce

[@rexwarrensr.9832]

It is a new generation ls, hemi, chayote

[@kylemilligan752]

So...... The dyno graph says the afr heads picked up low rpm power, then lost 11hp peak-to-peak. More than 11hp losses to the afr above 5400.

[@rexwarrensr.9832]

Well Andy don't that it's not a bbf ls motor s can't hardly compare to a bbf honestly

[@MyGarageGuysAZ]

232/240 115+3 610/610. I spec custom cams. Your events are wrong in your current cam. Thank me later. Smaller cam. But bigger gains. You are overscavenging and i/e ratio is also quite different when you avg it out from oem to enforcer.

[@johnbnos944]

Air flow means nothing without fuel flow. Remember fuel weighs 500-600% more than air per cubic yard.

[@kylemilligan752]

Now spend an hour with a basic cleanup porting of the stock heads

[@cockycarguylswayne2211]

I told him btr cams are trash

[@gordonborsboom7460]

It would be interesting to compare a new design BTR versus what cam profile Andy and DV could create. Would this end the debate or stir the hornets nest more

[@cockycarguylswayne2211]

Yes it would btr uses excessive exhaust to make power

[@cockycarguylswayne2211]

And they grind they cams off the wrong lsa

[@thereluctantgearhead4544]

BTR cams suck.

[@nickbruni8041]

👍🏼⛽️

[@UnityMotorSportsGarage]

Thanks for watching! Andy

[@VORTECPRO]

Let's review: 400 + inch LS, 2900 pounds, 6.60 1/8 th mile, not good HP.

[@blown572hemi]

Btr doesn't believe in lsa. I'd never buy his camshafts.

[@Jim_Lawrence]

Not sure I'd agree with that, but doubt he'd ever admit it. Look at his truck cam, tighter LSA. I think he understands, but can't go back on his statements without consequences.

[@thereluctantgearhead4544]

Dudes a clown. A guy can do much better with Bullet, Straub or Lunati. Ole Brian Tooly could learn alot from someone like Harold Brookshire.