gomer

iTrader: (13)

I've had a ton of people mail me wanting to know how my dyno session turned out, so I'll post it here. I bought a set of the Patriot Stage II 5.3 heads and installed them on my car. The car has headers, TR220 cam, Patriot heads, MTI lid, and a B&B triflow exhaust. No Underdrive pulley, No cutout, No LS1edit tuning, Stock MAF and TB, and I dyno'd with my 17x11 rears on. I put down 400.6rwhp and 380.2rwtq on the dynojet. I am sure with a pulley, ported TB, LS1edit, and a cutout I could see 415 VERY easily with this unnoticable cam. I know alot of people were "scared" of these heads for the price, but I'm impressed with mine. Thanks to Blake Walker of Walker Dynotune for letting me dyno in the middle of a severe thunderstorm today!

VTtransam

Good Numbers!

With a ported TB, pulley, tuning, and a bigger cam you could see 430+ rwhp. Those heads are a crucial deal, and I guess they perform too!

Matt

mike m

iTrader: (6)

good #'s, what compresion are you running?

gomer

iTrader: (13)

I don't know for sure, but I would think it is around 10.8 or so. I didn't have the heads milled any and there is some material removed from the combustion chamber to clear the larger exhaust valve.

98TAauto

iTrader: (2)

nice numbers! Now get her to the track this fall and lets see how she does there.. till then get the pulley, TB, and tuning

ggr12

Quick question for some help from you guys. got the car in the sig and was wondering how would i fare with the TR220 114lsa without tuning? would i most likely only need to drill the TB for idle if i go with no tuning for now? any idea of any other cams that would work well with the stock converter?

thx

gomer

iTrader: (13)

My TR220 is VERY tame and I haven't even drilled my TB, but my car is a 6 speed. Also I have the 112lsa cam, not the 114.

Mike K.

Nice numbers, your dyno will only get bigger with the TB and cutout etc...

NA$TY-TA

iTrader: (21)

I see the final results but cant find where it says how much HP and TQ you picked up after adding the heads. You know before and after. Do you have the dyno run to post so we can see how it looked.

gomer

iTrader: (13)

before was 381rwhp and 370rwtq. I have a scanned copy of the run if someone can host if for me.

Cal

iTrader: (1)

That TR220 has got to be one of the most impressive "small" cams out there. I would have ordered that cam but just didn't want an idle that smooth.

BIG PD

damn those are some good numbers. i'll tell you they have awesome customer service too. i'd have a set right now if my tranny didn't blow up 3 weeks ago. now i gotta wait till christmas...lol...not really that funny?

KF2KZ

Those are great #'s for the small cam. I love to see 400 at the wheels with this setup, because I'm doing nearly the exact sameup with a set of Ab. Speed heads....hoping to duplicate or get close to your results!!!

2k2ss

i didn't know heads only added 20 hp!? i'm NOT bashing patriot or any other head porter i just thought ported heads added more than that! as a matter of fact i have a set of patriot stg2 5.3 heads ordered but now i wonder if 20hp is worth the money and all the skin i'm going to lose off of my hands!!

gomer

iTrader: (13)

You have to look at how small of a cam I'm running with the heads. And also I have NO tuning. With a larger cam and some good LS1edit work, the gains would have been tremendous. I'm going to swap in a larger cam in the next month or so after buying a pulley and ported TB.

98TAauto

iTrader: (2)

the best bang for the buck is a cam... thats why alot of guys do that cause you usually see 30-35hp from them. Usually you see more of a gain from a cam then heads. Thats why I went cam only for a while cause it was a bigger bang for the buck.

if he puts a bigger cam, TB, and pulley on that car she woulda put down some big numbers! Plus tuning sually brings out 10-25hp

BIG PD

heads don't really do that much up top...if you consider 20hp more not alot. heads mainly help more in the low end and in the mid range and then a little up top. they make the torque curve so much high...kind of like a stroker but not by that much. heads will take a good .4 off of your 1/4 mile times if not more. they are a great investment to people who have done all the bolt ons and a cam. when these guys that run 11.0 with just a cam start getting heads they will be running 10.5's all motor with a 346ci motor...that is damn good. just look at the whole torque curve and i promise you'll be happy.

TTopJohn

You have a bigger cam TR224 v. TR220 so you should see a bigger increase than Gomer did with the same heads.
This is an overly simplified explanation, but here goes: Engine is an air pump, the stock heads are a restriction. They are less of a restriction than say LT1 heads that have come before them, but they are still a restriction. That's why you see huge cam only numbers in LS1s that you don't see on LT1s. Ported heads reduce this restriction. By just putting better flowing heads on, you make some more power. But if you install better flowing heads, and then cram more air in with other mods(bigger cam, better intake manifold, whatever) you will then get a larger gain from the other mods because you have better flowing heads.

It's kinda like a total package thing. From smallest gain from heads to largest gain from heads it should go: Ported heads on a stock engine < ported heads on a mild cammed engine < ported heads on a big cammed engine < ported heads on an engine with increased displacement and a big cam.

When you look at Gomer's $ investment to get 400 rwhp in a package that is streetable with no tuning, it is very impressive.

VSGLS1

iTrader: (8)

I just ordered the Patriot S2 heads/cam package from TSP, did you have the heads milled any for a higher CR? I think I will be running a 228/230 .588/.588 cam with mine milled some. Just getting weary on the P/V cleanance though. TIA

gomer

iTrader: (13)

Mine were not milled any. I didn't think the hassle of milling for higher compression would be worth the headache.