Heads/cam upgrades for 1983 LG4

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Sep 6, 2018 | 09:34 PM
  #1  
Hello all,

I currently have the LG4 305 for my trans am on a stand torn down to the short block (only crank and pistons are in it at this point). I am fairly set on replacing the stock heads with World S/R Torquer 305 heads because I like the larger ports, bigger valves and smaller 58 cc combustion chamber... I'm just torn as to which cam to buy for it... I live in California as well so I've been pushing it as much as I can within emissions regulations, but I've been thinking about the summit k1103 cam... it sounds like the best bang for the buck for a 305 inch motor, and waaaaay better than the teeny weeny cam I pulled out. I am on a budget and this sounds promising, yet if there are any drawbacks/better suggestions, let me know!

Thanks to anyone who shares their knowledge!

-Zack
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Sep 7, 2018 | 07:10 PM
  #2  
Re: Heads/cam upgrades for 1983 LG4
Crane (used to be called) CompuCam 2040 would be the largest to work with what you have and still pass emissions.
https://www.summitracing.com/parts/crn-114132

Here is a similar build you can use for reference:
https://www.thirdgen.org/forums/tech...-aerohead.html
https://www.thirdgen.org/forums/auto...onversion.html
https://www.thirdgen.org/forums/tech...appet-cam.html
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