Hello fellow motor nuts n bolt ons . I was wondering if some of You that have transplanted a LS1 cam into a 1999-2004 5.3L can tell me how much gain I can expect . I am in the middle of converting this engine into my 79' El Camino .My engine is stock with the exception that I have ported the exhaust ports from 1.28" by 1.5" to 1.4" by 1.6" . And the intake side I ground and sanded just enough to smooth out the castings and polished both . Also I have a set of Doug Thorley ceramic coated shorties and I will fabricate my own y using 3" tubing where they meet all the way back to a single in/ dual out muffler for now. Any input will be greatly appreciated . Thanx sincerely ,
Christopher Frost

 

not enough to be worthwhile?

LS6 cam will be a nice gain

 

i personally run the ls6 cam, i believe its a 204/218, i love it, and it performs well in my daily driver.

old video of idle, and rev

http://www.youtube.com/watch?v=IYaaIl1yo9Q

 

Hey guys I just wanted to say thanx 4 the replies . I appreciate it .

 

Yeah, it's what were all here for.

 

If your doin it I would go with something alittle bigger than a stock cam while you have it apart

 

Hey there , what is the largest cam that will pass emissions with tuning correct ? Because it will b a dd in good ol AZ . 1 guy told me about 220/220 is about the max dur. in his opinion that would still pass n b streetable . He did'nt say anything about lift or lobe sep angle or adv . Thanx

 

a 224/224 114* has passed emissions in CA in a 53L iirc.

 

Stock specs on factory cams

https://www.performancetrucks.net/fo...d.php?t=373616