After toiling with the idea for a couple of years now I have conceeded and indeed began the conversion process. I purchased a GT47-88 turbo and air/air intercooler from a fellow GN nut. He was able to make 958 HP at the wheels with it on a conventional SBC through a TH-400. I will be using the stock LS1 block, dished pistons, forged rods and 6.0 heads. I already have a set of truck manifolds to use and said I wasn't going to do this but as usual I have geeked out and relapsed after checking out of the Henry Ford center for horsepower junkies. Oh well, I expect to begin tearing into the car come summer and will make sure to document the build for future converts. I look forward to sharing information and picking ya'll's brain. Until then..............
Jim C.
__________________ 2005 5.7 Hemi 1500 truck. -12.66@105.87 mph 1.71-60-ft. (Superchips, CAI & 150hp of N2O.)
1970 Datsun 240-Z GN Powered -9.52@152 with the old 355 & N2O setup hitting the gas at the 60-ft mark. Little car lotsa motor and gas. (Changing over to LS1 PT88).
Whoever said progress was a slow process wasn’t talkin about me I’m a p-i-m-p plus, I got the “Magic Stick”!!!
__________________ 1999 T/A | Just another slow drag radial car (see here) Virginia Speed 366ci LS2 + big turbo (the little block that could) | 7.99 @ 177.8 (1.36)
Virginia Speed 388ci RHS + bigger turbo | In Progress
Special Thanks to TheOutlaw1, Phil99vette, Shawn @ Va Speed and MADMAN for all their help
Thanks gentleman, I was wondering what all the stock cube/GT47-88mm folks were using for camshafts. I was thinking of using a 220/220@.050 camshaft. Any thoughts?
Jim C.
__________________ 2005 5.7 Hemi 1500 truck. -12.66@105.87 mph 1.71-60-ft. (Superchips, CAI & 150hp of N2O.)
1970 Datsun 240-Z GN Powered -9.52@152 with the old 355 & N2O setup hitting the gas at the 60-ft mark. Little car lotsa motor and gas. (Changing over to LS1 PT88).
Whoever said progress was a slow process wasn’t talkin about me I’m a p-i-m-p plus, I got the “Magic Stick”!!!
Thanks gentleman, I was wondering what all the stock cube/GT47-88mm folks were using for camshafts. I was thinking of using a 220/220@.050 camshaft. Any thoughts?
Jim C.
IIRC, Pro Stock John has a bigger cam than that in his 348 cid GT47 setup
__________________ 1999 T/A | Just another slow drag radial car (see here) Virginia Speed 366ci LS2 + big turbo (the little block that could) | 7.99 @ 177.8 (1.36)
Virginia Speed 388ci RHS + bigger turbo | In Progress
Special Thanks to TheOutlaw1, Phil99vette, Shawn @ Va Speed and MADMAN for all their help
Couldn't tell ya but here is a link to his user name on TB.com. You will also see the ebay links with some pics of the setup on his GN. Maybe you could register there and ask him. I don't think that it would be an issue to make that kind of power with the right motor pushing it. Cliff's motor is pretty stout from what I gather. As a matter of fact he and ProStock John are freinds so you may even be able to ask PSJ about Cliff's setup in his GN or for more info should you need it.
Jim C.
__________________ 2005 5.7 Hemi 1500 truck. -12.66@105.87 mph 1.71-60-ft. (Superchips, CAI & 150hp of N2O.)
1970 Datsun 240-Z GN Powered -9.52@152 with the old 355 & N2O setup hitting the gas at the 60-ft mark. Little car lotsa motor and gas. (Changing over to LS1 PT88).
Whoever said progress was a slow process wasn’t talkin about me I’m a p-i-m-p plus, I got the “Magic Stick”!!!
And so it begins............... 
| In Progress
