Stock Ported ls1 heads OR aftermarket which way should I go???
#1
Stock Ported ls1 heads OR aftermarket which way should I go???
Ok I got me a thunder racing 224/227 114 cam kit coming, I lined up my mechanic to do the cam and figured why not do heads right away. Just thought I would get my stock heads flowed and get a 3 angle valve job...price is right at 1250$ BUT my mechanic tells me the stock LS1 head is no better ported than stock.... Any truth to this....?
-Is it worth another 1000$ for aftermarket heads?
-which aftermarket heads work best with my set up...?
I have all major bolt ons on a 98 Z28 and planning on going with a TPIS oval intake and TB.
Any and all advice I could get would be GREAT...!
-Is it worth another 1000$ for aftermarket heads?
-which aftermarket heads work best with my set up...?
I have all major bolt ons on a 98 Z28 and planning on going with a TPIS oval intake and TB.
Any and all advice I could get would be GREAT...!
#2
The only aftermarket head for LS1s is made by AFR. I have yet to hear of anyone running them other than Tony Mammo from AFR. He has gotten exellent results with them. However any one else running ported heads is running a "Stock" ported head. There is plenty of gain in porting the stock heads!
Brad
Brad
#3
Porting the heads WILL help, however don't get a 3 angle valve job, get a good 5 angle valve job. Clean and touch up the inside of the ports some and there's no reason why you shouldn't be able to get 270-280cfm out of them depending on how much you work in the ports.
-Sly
-Sly
#4
Thanks for the info......That is what I thought, now just have to convince my Mechanic....He has a HARD head.. I may have to get a new one to help me out.....(hehe) I will do the 5 angle for sure...
#6
0, like I said his hard head gets in the way.... which is why he is a very good mechanic and can figure anything out he don't quit until its done right. BUT I am going to check some other places out. I rather spend a few extra $$ then wreck something... This guy has fixed just about everything and anything I gave him from golf carts to body work on limos and buses, but this is the first time he has ever hesitated about a install. I don't think he will be to hurt if I find someone else on this deal.
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#9
Originally Posted by speedo
Ok I got me a thunder racing 224/227 114 cam kit coming, I lined up my mechanic to do the cam and figured why not do heads right away. Just thought I would get my stock heads flowed and get a 3 angle valve job...price is right at 1250$ BUT my mechanic tells me the stock LS1 head is no better ported than stock.... Any truth to this....?
-Is it worth another 1000$ for aftermarket heads?
-which aftermarket heads work best with my set up...?
I have all major bolt ons on a 98 Z28 and planning on going with a TPIS oval intake and TB.
Any and all advice I could get would be GREAT...!
-Is it worth another 1000$ for aftermarket heads?
-which aftermarket heads work best with my set up...?
I have all major bolt ons on a 98 Z28 and planning on going with a TPIS oval intake and TB.
Any and all advice I could get would be GREAT...!
https://ls1tech.com/forums/generation-iii-internal-engine/174133-tsp-pp-stage-2-ls1-perimiter-bolt-head-flow-numbers-999-99-a.html
Last edited by PREDATOR-Z; 07-02-2004 at 04:21 AM.