5.3 swap 5.7
10-23-2004, 04:24 PM
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5.3 swap 5.7 Mom has a 2000 serria and i think it has the 5.3's. well i see a lot of people like to run 5.3's. Can i put my heads on her truck and her heads on my car? Also with her 5.3's will i make some power with them? thanks skeeter
10-23-2004, 04:59 PM
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5.7 heads will have shrouded valves on the 5.3. This will hurt not help performance. The 5.3 heads will raise your C.R. on the 5.7 but, they have smaller valves. Gains on the 5.7 will be small if any.
10-23-2004, 07:35 PM
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I have a set of patriot 5.3 heads i will sell ya for 800 bucks. Theyve been on my car for around 6-7k. I was pleased with em. I made around 400 rwhp and 11.2s at 120.
