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lol people ***** at me but maybe you should so some research I seen on clubgp some one was running gtp heads on and NA bottom end because the compression is higher on the NA engines. He was using gtp heads with roller rockers cam and the cast intake the newer 3800 NA engines have. He was talking about doing a direct port NOS setup but I dont know if it was ever one. NA recipies are easy big cam high compression, roller rockers, and id like to do a 75 direct port setup with the cast intake, I know you can get pressure relieve valves to save back fires and grenading an intake there for if go cast drill 1 or 2 holes for the relase valves incase if a backfire from the NOS in the intake.
 
Yes...you can run GTP heads on a N/A motor...with a GTP LIM, and supercharger. That is called a TOP SWAP.

But you can't run a N/A Upper intake with GTP heads...that is what he was saying. And I've never seen someone run GTP heads on a N/A car...I didn't think it was possible with a N/A upper.
 
I know what the hell a top swap is guy and I also seen some one using the metal buick intake with a turbo that was in a white 2 door thats got ghost flames I dont remeber whose car it was but i know it was super clean and the turbo set up was very nice. Maybe he was using GT heads then I dont know. I didnt think there was any difference using the GTP heads when mating the lower intake. I though the combustion chambers and valves were all that was different.
 
02GrandPrixIraqVet said:
I know what the hell a top swap is guy and I also seen some one using the metal buick intake with a turbo that was in a white 2 door thats got ghost flames I dont remeber whose car it was but i know it was super clean and the turbo set up was very nice. Maybe he was using GT heads then I dont know. I didnt think there was any difference using the GTP heads when mating the lower intake. I though the combustion chambers and valves were all that was different.
Click to expand...

you call nitrous NOS but, you call everyone else a ricer lol

Anyway, L67 heads have injector ports in them, L36 heads don't. Some Turbo L67 guys (depends on how much boost/turbo size) swap their L67 heads out for L36/26 heads, L36 lim (or you can get one from zzp now where they filled in the injector ports, allowing you to utilize the L67 heads), and plastic uim.
 


The problem with running L67 heads with an L36 LIM and UIM is that you now have two sets of injector bosses. One set needs to be plugged. Perfect opportunity to plug and tap for nitrous or meth.
 
02GrandPrixIraqVet said:
I know what the hell a top swap is guy and I also seen some one using the metal buick intake with a turbo that was in a white 2 door thats got ghost flames I dont remeber whose car it was but i know it was super clean and the turbo set up was very nice. Maybe he was using GT heads then I dont know. I didnt think there was any difference using the GTP heads when mating the lower intake. I though the combustion chambers and valves were all that was different.
Click to expand...

It was prolly a Stattama custom UIM on that Buick you saw.

and...nope...heads are different...injector ports are in the L67 heads vs. the L36 heads which have the ports in the LIM.
 
if i were to do it again i would run an l67 head set with l26 upper stuff. turbo with direct injection nitrous.
 


I am seeing what you want to do. You want the holes in the GTP heads to spray nitrous into while spraying your fuel into the LIM. I think the cast buick intake is the L26 plenum. For the turbo you would probally go with the lower compression.
 


L67...series II Low comp
L36...series II High comp
L32...series III Low comp
L26...series III High comp
 
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