Egine not making ANY power
TTP never did the tune after he installed new heads. We did the original tune on the Patriots, NOT on the Absolute heads. At the time, we saw nothing wrong with the car (As far as misfires, etc.), besides the heads not flowing well.
- Matt
- Matt
Originally Posted by mike m
alright dude its NOT the heads. do a search and compare any of AS heads to Patriots. AS heads make more power. You either messed up the install or hurt your motor with the patriot heads. Dont go blaming the heads. It could be the tune too. it was tuned by TTP right? Have them retune it. You dyno'ed the car and the air/fuel was what 15 to 1? Obvioulsy the tune is messed up. The Patriot heads you had were leaking oil and had sinking valve seats. So the tune would defintally be off. GO RETUNE the car. Check your plugs maybe TTP removed your miss fire codes so you wouldnt even know if you have a bad coil or plug. I saw those heads flowed on the bench and so did Matt from TTP they only flowed 270 cfm. Jays heads flowed over 30cfm higher then them on his bench on the same day and all. So the tune could need alot of work.
TECH Fanatic
Joined: May 2003
Posts: 1,292
Likes: 6
From: RainbowCity,Alabama
Originally Posted by mike m
Terry HPA in Illinois how did you loose that account. AS heads made 18 rwhl hp and 25 ftlbs of tq over your heads with a 220 cam.
Sean M from Maryland knocked off a 1/2 a second switching to AS heads over PP heads.
Name your 2 Terry. I named 2
Sean M from Maryland knocked off a 1/2 a second switching to AS heads over PP heads.
Name your 2 Terry. I named 2
Mike M,
I know the real story about HPA,I talk to John quite often.No one has lost any account.When the car had Patriot Stage 2 5.3L and dynoed,then had AS 5.3L heads installed the car made the same HP but lost torque.After dynotuning was performed the car made the power difference,not because of the heads.
Sorry this is off topic.I will not make any more post in this thread.
Originally Posted by TVWilkes
Mike M,
I know the real story about HPA,I talk to John quite often.No one has lost any account.When the car had Patriot Stage 2 5.3L and dynoed,then had AS 5.3L heads installed the car made the same HP but lost torque.After dynotuning was performed the car made the power difference,not because of the heads.
Sorry this is off topic.I will not make any more post in this thread.
I know the real story about HPA,I talk to John quite often.No one has lost any account.When the car had Patriot Stage 2 5.3L and dynoed,then had AS 5.3L heads installed the car made the same HP but lost torque.After dynotuning was performed the car made the power difference,not because of the heads.
Sorry this is off topic.I will not make any more post in this thread.
I still think Rob should check for driveline problems before saying that the heads he has on there now aren't any better than the ones he had before. I'm sure he has problems somewhere.. but it isn't in the heads. 
Last edited by gomer; Apr 25, 2004 at 10:26 AM.
Outsiders opinion here. All this little bickering and arguing does none of these venders in my eyes any good. Nobody has brought any facts to the table other than what they/he/she is saying. There are a few terms I can attach to the type of posting you folks are doing here. Mudslinging is one of them. The other is damned near yellow journalism. Give dyno numbers, show combustion chambers if the motor has been burning oil, show timeslips. Any of that information can be rigged as well. I don't get it guys.
Staging Lane
Joined: Oct 2003
Posts: 71
Likes: 0
From: Florida
I would think that if there was a compression problem it would trip some sort of check engine light, which you didn't say if you had or not.
Someone mentioned overheating could have caused the previous set of heads to warp. How did you blow the head gasket? Also, what does the oil look like? If the car got overheated enough to warp the heads that bad, then it may have cooked some bearings someplace.
I agree with a couple of the other posts, after checking your oil for signs of bearing trouble, the first best thing would be to have the computer tune checked and rematched to your new higher flowing heads. Then if you're still down on power, start looking for mechanical gremlins. The motor overheating could have caused some serious trouble. Problem with today's all aluminum motors is that they're really sensitive to overheating. If it overheated enough to warp the heads, it might have warped the deck of the block.
Someone mentioned overheating could have caused the previous set of heads to warp. How did you blow the head gasket? Also, what does the oil look like? If the car got overheated enough to warp the heads that bad, then it may have cooked some bearings someplace.
I agree with a couple of the other posts, after checking your oil for signs of bearing trouble, the first best thing would be to have the computer tune checked and rematched to your new higher flowing heads. Then if you're still down on power, start looking for mechanical gremlins. The motor overheating could have caused some serious trouble. Problem with today's all aluminum motors is that they're really sensitive to overheating. If it overheated enough to warp the heads, it might have warped the deck of the block.
Originally Posted by Beavis5.3
I would think that if there was a compression problem it would trip some sort of check engine light, which you didn't say if you had or not.
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Staging Lane
Joined: Dec 2003
Posts: 63
Likes: 0
I am not going to get into bad mouthing two head companies that I carry. As for the car in question we started with PP heads the car was already camed. We only added heads. The customer was looking for 400+ HP and I thought with the thunder cam 220 we should get there. The first pull was 380 I had already put some timing into it and the air fuel was not to far off 12.7- 12.5 after pulling some fuel we got 385 out of it. At this point I knew there was no way we would get over 400hp and because I rent dyno time by the Hr. I pulled the plug. After I got the car back to the shop I did every test know to man before I pulled the heads and everything checked out good. The customer and I decided to switch the heads. We put a set of AS heads on. Went back to the dyno. I took the last program that made 385.* and added 5% fuel to be safe and we did the pull. It dynoed 385. At this point the customer knew and so did I that the old heads where probably ok. At this point I decided to get more aggressive with the tune added more timing and leaning it out we got 398 out of it. The customer was content with 398. Did I give up on the PP head to soon? Who knows. All I can tell you is even if I had gotten 399 out of the PP head the customer would not have been happy. The thing that proved to him that what it is is what it is. Is the fact that I switched heads to another brand. At that point what ever I could get out of the car would have to be acceptable because it was not in the heads. Jay and Terry both put out a great product and would recommend and DO recommend both.
John Woodward
Owner
HPA
John Woodward
Owner
HPA
Thread Starter
On The Tree
Joined: Jan 2003
Posts: 126
Likes: 0
From: nj
Originally Posted by mike m
Rob is stupid for even posting this. He posted this right after Jay from AS offered him help. This post should just get deleted.
On topic, I'm thinking it might be the pushrod length which maybe slightly off, I'm bringing the car out to jay sometime this week or next(what ever works for him) and I will let everyone know how things turn out. Jay said he with the vette Dr's tuning will make the 450 rwhp the car should be making, and I have no doubts he is right. I cant wait
