Are 862 5.3 Heads good?
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From: Peoria, AZ
Are 862 5.3 Heads good? With my mods listed below, I dynoed 426 RWHP with these TEA 1.5 Heads. The heads were ported and milled a bit. I was wondering if I'm doing ok with these heads? I was also thinking about going to the AFR 205 heads and was wondering what gain I should see.
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Originally Posted by slt200mph
Good numbers for a automatic car..those 5.3 TEA heads are pretty good..I would not make the change you might not pick up anything.. 
Originally Posted by camaro98z28
So going to better head might not make more power? 
It might not be a better head..just because you pay more does not mean it is better. My TEAs flow 316 cfm that is as good as the AFRs. If you were a six speed car you would be in the mid 400s which is pretty good. The only way you are going to pick up any HP is going with a ported 90/90 combo ... the latest and greatest on the aftermarket head scene now days are the $3000 trick flow heads..I would go with the 90/90 first..after you get to the mid 400s adding more HP is pricey compared to the first 100+ HP you gained with your mods ..
PS the L92 heads and intake might be good if you had bigger cubic inches but with a 346 size motor the trick flows are the shinizznit now.. those heads and the 90/90 are bad *** ... Vengeance Racing just did a 346 with the trick flows and it made 524 rwhp.. it was a six speed car and thoes are stout numbers ..
Last edited by slt200mph; Feb 19, 2007 at 02:14 PM.
Thread Starter
11 Second Club
Joined: May 2002
Posts: 710
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From: Peoria, AZ
Originally Posted by slt200mph
It might not be a better head..just because you pay more does not mean it is better. My TEAs flow 316 cfm that is as good as the AFRs. If you were a six speed car you would be in the mid 400s which is pretty good. The only way you are going to pick up any HP is going with a ported 90/90 combo ... the latest and greatest on the aftermarket head scene now days are the $3000 trick flow heads..I would go with the 90/90 first..after you get to the mid 400s adding more HP is pricey compared to the first 100+ HP you gained with your mods ..
PS the L92 heads and intake might be good if you had bigger cubic inches but with a 346 size motor the trick flows are the shinizznit now.. those heads and the 90/90 are bad *** ... Vengeance Racing just did a 346 with the trick flows and it made 524 rwhp.. it was a six speed car and thoes are stout numbers ..
PS the L92 heads and intake might be good if you had bigger cubic inches but with a 346 size motor the trick flows are the shinizznit now.. those heads and the 90/90 are bad *** ... Vengeance Racing just did a 346 with the trick flows and it made 524 rwhp.. it was a six speed car and thoes are stout numbers ..
