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what heads?

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Old Jun 5, 2006 | 01:26 AM
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From: Streets of the 405
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i am wanting to do a cam change possibly a t-rex but on a higher lsa for nitrous and i was wondering which heads would work better with a mild port job
241s
of 5.3s
does any one have and dyno numbers with either of these combos

thanks dustin
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Old Jun 5, 2006 | 02:30 AM
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You can run the t-rex with nitrous as is from thunder on the 109-110 LSA. It is quite fond of it actually. Their posterboy was gonna run the t-rex with a shot on top of it. Plus you don't need a higher LSA unless you plan on running like a 200+ direct port shot.
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Old Jun 5, 2006 | 02:31 AM
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And as far as heads go. I would do the 5.3's. Nitrous likes a bit higher CR motor.
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Old Jun 5, 2006 | 11:22 AM
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AFR 205's w/59 cc A little pricey
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Old Jun 5, 2006 | 06:07 PM
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If money ain't a thing-ET 215's. On a budget, TSP LS6 heads.
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Old Jun 6, 2006 | 02:46 AM
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thanks for the sugestions
how much will the 5.3s bump up the compression
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Old Jun 6, 2006 | 02:47 AM
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From: Justin, TX
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10.8:1 most likely. Also a tough question to answer due to CC sizes and milling will change the entire DCR.
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