Need Help Deciding: Heads
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From: CORNELIA GA
Need Help Deciding: Heads
I bought a 224/224 581/581--114 cam. Thinking about buying some phase 3 heads--67cc 2.08/1.60 valves. I have tpis headers/x-pipe/corsa exh/342's/underdrive pulleys/LS6 Intake/Vararam. Ive heard that these heads would be way to much for what I have. Would lose alot of bottom end power, but gain top end power. Need help deciding on these heads or something smaller(phase 2 heads maybe). T/C coming at the end of summer. JOHN
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Originally Posted by griffgoody
I bought a 224/224 581/581--114 cam. Thinking about buying some phase 3 heads--67cc 2.08/1.60 valves. I have tpis headers/x-pipe/corsa exh/342's/underdrive pulleys/LS6 Intake/Vararam. Ive heard that these heads would be way to much for what I have. Would lose alot of bottom end power, but gain top end power. Need help deciding on these heads or something smaller(phase 2 heads maybe). T/C coming at the end of summer. JOHN
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From: CORNELIA GA
Originally Posted by C5magic
2.08 valves are too big for a 346 because of the shrouding you will get with a 3.90 bore diameter. Most stage 2 heads for a 346 have 2.02 int. and 1.57 ext. valves. If I were you I would go for a set of heads that are setup for a 346 ci engine.
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I Know I guy on the forum who has a set of patriot stage 2 heads--just spent $350 having them freshed up(ready to bolt on). He's asking $1000 for the set. Matter of fact, he told me the same thing you said about shrouding with a stock bore diameter. And that the heads should be on a 408 or 427 motor. I think I'll look into buying his heads. TKS JOHN
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Patroit Heads have had quality control issues, plus they aren't the best heads for producing power. If I were you I would look at heads from another source. Both MTI (stage 2 E) and TEA (Stage 1.5 heads) are budget priced heads that are better than Patroit Heads.
Forgot to mention get 5.3 heads not 5.7s.
Forgot to mention get 5.3 heads not 5.7s.
Last edited by C5magic; Apr 30, 2005 at 08:11 AM.
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Originally Posted by griffgoody
How much $$$ I'M I looking at spending on the MTI Stage 2e and 5.3 heads. Is any1 on the forum selling a good used set. JOHN
Check the C5 parts for sale forum, you can sometimes find a good deal on a set of ported heads.
Last edited by C5magic; Apr 30, 2005 at 03:15 PM.
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From: CORNELIA GA
Originally Posted by C5magic
MTI stage 2 E heads run about 1595.00, TEA stage 1.5 heads are in the same price range. If you don't have a 5.3 core figure on about $300.00 to $350.00 more. BTW TEA was running a sale on their 1.5 heads I believe they were asking $1550.00 with NO core charge.
Check the C5 parts for sale forum, you can sometimes find a good deal on a set of ported heads.
Check the C5 parts for sale forum, you can sometimes find a good deal on a set of ported heads.
Melting Slicks
Joined: Apr 2001
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From: Highland Village TX
I have Patriots. I got lucky and was one of the first that had these, many had issues with theirs. Mine were OK. However, I worked with Patriot to get metal valve guides to replace the platic ones that were originally on there and caused some to experience oil leakage/blow by issues. They have been on my car 4,000 miles and I am making decent power with a 228 Cam and a 4,000 Stall TC on my A4.
386 RWHP and 419 RWTQ and ran a best in the 1/8th of 7.15 at 95.55 MPH, the 1/4 wasn't as good cause I got a bad 60', but still pulled off an 11.42 at 122.58 MPH.
Good Luck.
The Bandit
386 RWHP and 419 RWTQ and ran a best in the 1/8th of 7.15 at 95.55 MPH, the 1/4 wasn't as good cause I got a bad 60', but still pulled off an 11.42 at 122.58 MPH.
Good Luck.
The Bandit
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From: CORNELIA GA
Originally Posted by 2001 Red Coupe Bandit
I have Patriots. I got lucky and was one of the first that had these, many had issues with theirs. Mine were OK. However, I worked with Patriot to get metal valve guides to replace the platic ones that were originally on there and caused some to experience oil leakage/blow by issues. They have been on my car 4,000 miles and I am making decent power with a 228 Cam and a 4,000 Stall TC on my A4.
386 RWHP and 419 RWTQ and ran a best in the 1/8th of 7.15 at 95.55 MPH, the 1/4 wasn't as good cause I got a bad 60', but still pulled off an 11.42 at 122.58 MPH.
Good Luck.
The Bandit
386 RWHP and 419 RWTQ and ran a best in the 1/8th of 7.15 at 95.55 MPH, the 1/4 wasn't as good cause I got a bad 60', but still pulled off an 11.42 at 122.58 MPH.
Good Luck.
The Bandit
JOHN
Melting Slicks
Joined: Apr 2001
Posts: 2,909
Likes: 1
From: Highland Village TX
I am the KING 
Just kidding. I have a pretty fast C5, there are faster, but I am not complaining.
I ran a 12.57 at 111 MPH almost stock; EMT's and the only mods were intake, exhaust (Corsa Indys) and a Powerloader, similar to Ls1 edit.
I had a good one from the factory. My buddy tuned me and is one of the best in all of Dallas., It drives like a cadilac and still will kick some azz
Good Luck......
My Patriots I just got lucky with. I bet other heads would give me even higher #'s and better times. I am just glad the thing hasn't blown up, 3-4K miles later I think I am ok
Just kidding. I have a pretty fast C5, there are faster, but I am not complaining.I ran a 12.57 at 111 MPH almost stock; EMT's and the only mods were intake, exhaust (Corsa Indys) and a Powerloader, similar to Ls1 edit.
I had a good one from the factory. My buddy tuned me and is one of the best in all of Dallas., It drives like a cadilac and still will kick some azz
Good Luck......
My Patriots I just got lucky with. I bet other heads would give me even higher #'s and better times. I am just glad the thing hasn't blown up, 3-4K miles later I think I am ok
Last edited by 2001 Red Coupe Bandit; May 3, 2005 at 08:34 PM.