I have an old Grand Prix store #1 cam Its a small cam around the size of a VS. Before I go to a bigger cam in a year or 2 I still want to get this into the low 12s. This year I will be swapping out my Short stack intercooler for a full size unit and either going to a gen 5 or ported gen 3 and LIM and e85 if I ever get my injectors I bought off another forum 2 months ago.

So will 1.7 roller rockers help or not? I have heard a lot of arguments that they hurt performance but pure numbers you would think more lift would help.

_________________

Pontiac Garage:
01 Pontiac Grand Prix GT/ 96 Pontiac Grand Prix SE/ 90 ASC-Mclaren Pontiac Turbo Grand Prix

I think it would help. The extra lift will give the effect of a smaller cam. Just make sure you have enough clearance to run the rockers without making contact with the valve guides.

Sent from my DROID BIONIC using Tapatalk

_________________

What is the max lift we can have on stock heads?

-- Wed Dec 28, 2011 5:19 pm --

I think I am ok on the intake side but exhaust isn't going to work.

_________________

Pontiac Garage:
01 Pontiac Grand Prix GT/ 96 Pontiac Grand Prix SE/ 90 ASC-Mclaren Pontiac Turbo Grand Prix

with modded retaners around .55 i think before the spring seat needs machining

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

See with my calculations I would be sitting at .5525" on exhaust . Intake .5355" with 1.7 rockers. So its cutting it close. If I remember correctly Intense sells modded retainers that give the most clearance which is .045 more then comps.

_________________

Pontiac Garage:
01 Pontiac Grand Prix GT/ 96 Pontiac Grand Prix SE/ 90 ASC-Mclaren Pontiac Turbo Grand Prix

i would say you would be fine with modded retainers then just rotate the engien by hand first and check for binding

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Well I guess I will give it a shot. The ones Intense sells have give more clearance then ZZP's comp moddeds by .045". I talked to Brent last year about it and he thought that it would work.
I need more speed!!

_________________

Pontiac Garage:
01 Pontiac Grand Prix GT/ 96 Pontiac Grand Prix SE/ 90 ASC-Mclaren Pontiac Turbo Grand Prix

That is a problem we all share

Sent from my DROID BIONIC using Tapatalk

_________________