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whats the combustion chamber size on the TEA 5.3's

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Old 09-04-2007, 08:48 AM
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Default whats the combustion chamber size on the TEA 5.3's

what is the combustion chamber size on the TEA 1.5- 5.3 heads?

what is the most TEA reccomends milling the 5.3 heads?

this would be for a 408 needing mucho compression if you wondering...
Old 09-04-2007, 08:50 AM
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http://www.totalengineairflow.com/pr.../gmhead/gmls1/

My 5.3's are milled down to 57-58 cc's.
Old 09-04-2007, 09:24 AM
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Mine are 54cc
Old 09-04-2007, 09:42 AM
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did cutting them that much hurt your flow bench numbers? what ET's or hp are you guys at?
Old 09-04-2007, 10:20 AM
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Originally Posted by ty_ty13
did cutting them that much hurt your flow bench numbers? what ET's or hp are you guys at?
Thats when you get pair it up with a lower lift cam.

Curious tho as to how much compression your looking to get?
Old 09-04-2007, 10:40 AM
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Originally Posted by ty_ty13
did cutting them that much hurt your flow bench numbers? what ET's or hp are you guys at?

No they flowed very well intake was 316 at .600
Old 09-04-2007, 10:50 AM
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Originally Posted by slt200mph
No they flowed very well intake was 316 at .600

did you have to flycut with that much milling?
Old 09-04-2007, 12:39 PM
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i've got a 408 thats boosted and looking at needing about 58cc head... my pistons are already flycut more than what they came (about .025 deeper and .030 wider on intake and exhaust)

my pistons are a -34cc dish which brings my CR to around 8.0 im looking to get it back to 9.0 or so with out swapping pistons

plus those 1.5 5.3 have some good exhaust flow... my cam would be fairly larger than what it is now (224/236 .601/.602 114lsa)...
Old 09-04-2007, 01:39 PM
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id leave it at 8:0 compression for the blown motor.
Old 09-04-2007, 02:50 PM
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They usually end up ~63cc before milling. Most everybody wants them milled to 61cc or smaller.
Old 09-04-2007, 02:54 PM
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thats exactically what i needed to know.

thanks,


Tyler
Old 09-04-2007, 06:38 PM
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Originally Posted by xBROKEx
did you have to flycut with that much milling?

With camshaft duration at 230 degrees or less no fly cutting was required
Old 09-06-2007, 08:48 PM
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Originally Posted by slt200mph
No they flowed very well intake was 316 at .600
Damn I have the same heads and mine flowed 292 @ .575 and flipped at .600 talk about junk heads.
Old 09-06-2007, 08:59 PM
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depends on how old they are and what stage they are .... many different revisions have been made over time




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