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Gio93z · 04-19-2009, 07:54 PM

Hey everyone. I've had my 383 LT1 for about 3+ years now and IMO it doesn't quite seem to be as powerful as I think it should be. Could the fact that I have near stock heads on the car be why? That's a good start. The heads I am running right now are stock heads, but ported and polished with stainless valves, heavy duty springs, and that's about it! Not to mention my valve sizes are stock! From my understanding, the heads on an LT1 can be very restrictive, and with a stroker motor fighting to make power, I feel as even though I have slight head work done, I am not near the potential of power I could be making. So without getting into too much detail about the engine specs and all that I am looking for some opinions on heads, and valve sizing that i should lean towards. If anyone has any first hand experience or just general knowledge that'd be great.

I have been looking at Patriot Performance and AFR leaning towards a 2.02 / 1.60 valve sizing. And as for the cc I don't know if I head towards 195cc or 215 cc or even if there is something else out there. I also saw an intake valve size of 2.08 as an option but I'm really not that familiar with what is good. i will also be adding hardened pushrods and 1.6
roller rockers.

How much are the heads I have on now really hurting me.......

My 383 is naturally asperated if that helps. Well thanks everyone -

Giovanni

04-19-2009, 07:54 PM	#1
Gio93z Join Date: Jun 2005 Location: New Milford, North Jersey Posts: 129 iTrader: (3)	Time For New Heads....But Which Ones? Hey everyone. I've had my 383 LT1 for about 3+ years now and IMO it doesn't quite seem to be as powerful as I think it should be. Could the fact that I have near stock heads on the car be why? That's a good start. The heads I am running right now are stock heads, but ported and polished with stainless valves, heavy duty springs, and that's about it! Not to mention my valve sizes are stock! From my understanding, the heads on an LT1 can be very restrictive, and with a stroker motor fighting to make power, I feel as even though I have slight head work done, I am not near the potential of power I could be making. So without getting into too much detail about the engine specs and all that I am looking for some opinions on heads, and valve sizing that i should lean towards. If anyone has any first hand experience or just general knowledge that'd be great. I have been looking at Patriot Performance and AFR leaning towards a 2.02 / 1.60 valve sizing. And as for the cc I don't know if I head towards 195cc or 215 cc or even if there is something else out there. I also saw an intake valve size of 2.08 as an option but I'm really not that familiar with what is good. i will also be adding hardened pushrods and 1.6 roller rockers. How much are the heads I have on now really hurting me....... My 383 is naturally asperated if that helps. Well thanks everyone - Giovanni __________________ 1993 z28 Camaro Last edited by Gio93z; 04-19-2009 at 07:55 PM.