ls3 427 build
03-09-2014, 08:35 PM
#1
ls3 427 build Thinking of building a ls3 427 for my 99transam with a t56 . what kind of power are u all getting out of these . I was thinking LSA heads 102 intake 1 7/8 headers and 11-1 cr . what kind of numbers can I expect ? . I might spray it to but just wanted to know what I was looking at , or any suggestions . I have about 10 grand to spend . its this or a supercharged 370 or 390 .
03-09-2014, 09:12 PM
#2
i was about to do a 427 but i decided against it bc of the extra wear the 4.1 stroke gives... i went with a 418.... 4 inch stroke 4.08 bore... i'm right at 11/1 comp ratio... you can see my hp and mods in sig
03-09-2014, 10:54 PM
#3
On The Tree
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I made some good power out of my 418. Im not a fan of the 4.125 stroke either but thats just me. Youll be over budget on the supercharger Im sure if you go that route. Unless you have a built engine already
03-12-2014, 06:29 PM
#4
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I have a LS3 in my '80 vette. Are you saying I could build a 427 out of it? What would I have to do and would it perform with a LS7? I want a 427 for nostalgia purposes and, of course, more butt kicking ability.
