09 G8 GXP build advice needed (TSP cams)
03-14-2011, 12:00 PM
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09 G8 GXP build advice needed (TSP cams) I have a friend who owns a Pontiac G8 GXP Auto. The car is completely stock and he wants to put a cam in. What cam would be a good choice:
231/236 .641/.615 112LSA
229/236 .624/.615 112LSA
225/230 .617/.612 112LSA
Also the stock trans is a 6L80E, would all these require a new torque converter?
231/236 .641/.615 112LSA
229/236 .624/.615 112LSA
225/230 .617/.612 112LSA
Also the stock trans is a 6L80E, would all these require a new torque converter?
03-14-2011, 12:40 PM
#2
Nothing against TSP, infact they are my first go to BUT livernois motorsports has cam packages with results for the GT/GXP. They are a sponcer.
I personally have a 2009.5 GT and was looking to do some exhaust and cam work but it's my DD and i trade in ever 6-12 months. It would be a big loss.
I personally have a 2009.5 GT and was looking to do some exhaust and cam work but it's my DD and i trade in ever 6-12 months. It would be a big loss.
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Ewinder68 (02-28-2020)
03-17-2011, 08:56 AM
#5
The stock conveter is a concern & we've done testing against the stock stall I'd go with the smaller of the 3 camshaft choices if you decide to stay stock converter.
Just because someone installed a camshaft specifically in a GXP doesn't make the camshaft automatically better. We choose to use engine dyno testing to develop our camshafts because it takes out the variable the car introduces. If you can test camshafts side by side quickly you can better determine what camshafts work best at all rpm ranges.
Just because someone installed a camshaft specifically in a GXP doesn't make the camshaft automatically better. We choose to use engine dyno testing to develop our camshafts because it takes out the variable the car introduces. If you can test camshafts side by side quickly you can better determine what camshafts work best at all rpm ranges.
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2005 Twin Turbo C6
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Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
03-17-2011, 09:27 AM
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This might seem like a free plug but....
when I got my GTO tuned months ago, my tuner asked if I had a TSP cam. I asked "no, but why?" And it was because he was impressed with my power curve and said he's always had good results with TSP...so sounds like you probably want some improved power with no loss of creature comforts. TSP could help you out.
when I got my GTO tuned months ago, my tuner asked if I had a TSP cam. I asked "no, but why?" And it was because he was impressed with my power curve and said he's always had good results with TSP...so sounds like you probably want some improved power with no loss of creature comforts. TSP could help you out.
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03-19-2011, 08:04 PM
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As an alternate choice (and less expensive) you could have them swap in an LS9 cam and LS9 valve springs (good to 0.600 lift). You'd have to switch from single to three bolt.
The stock LS3 Cam is 204/211 0.551"/0.525" 117 LSA (Single Bolt)
The LS9 Cam is 211/230 0.562"/0.558" 122.5 LSA (3 Bolt)
This would set you up well for a Maggie 2300 later on. By itself the LS9 cam should be good for ~30-35 rwhp and you would have stock driving manners with the 6L80E. Furthermore it's a GM cam so it's possible you could get the dealership to install it and warranty the work. Food for thought.
The stock LS3 Cam is 204/211 0.551"/0.525" 117 LSA (Single Bolt)
The LS9 Cam is 211/230 0.562"/0.558" 122.5 LSA (3 Bolt)
This would set you up well for a Maggie 2300 later on. By itself the LS9 cam should be good for ~30-35 rwhp and you would have stock driving manners with the 6L80E. Furthermore it's a GM cam so it's possible you could get the dealership to install it and warranty the work. Food for thought.
03-19-2011, 09:30 PM
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As an alternate choice (and less expensive) you could have them swap in an LS9 cam and LS9 valve springs (good to 0.600 lift). You'd have to switch from single to three bolt.
The stock LS3 Cam is 204/211 0.551"/0.525" 117 LSA (Single Bolt)
The LS9 Cam is 211/230 0.562"/0.558" 122.5 LSA (3 Bolt)
This would set you up well for a Maggie 2300 later on. By itself the LS9 cam should be good for ~30-35 rwhp and you would have stock driving manners with the 6L80E. Furthermore it's a GM cam so it's possible you could get the dealership to install it and warranty the work. Food for thought.
The stock LS3 Cam is 204/211 0.551"/0.525" 117 LSA (Single Bolt)
The LS9 Cam is 211/230 0.562"/0.558" 122.5 LSA (3 Bolt)
This would set you up well for a Maggie 2300 later on. By itself the LS9 cam should be good for ~30-35 rwhp and you would have stock driving manners with the 6L80E. Furthermore it's a GM cam so it's possible you could get the dealership to install it and warranty the work. Food for thought.
