have a 87 Fieo GT, 4th gear grinds a bit have to pull it back out then it goes in fine. what are the best synchos to go with? possiblity to build it to handle a 500hp L67?

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2001 GTP street car- GT45 turbo,Stage 4 Intense turbo cam,FMIC,150 wet, double roller timing chain, Diamond forged coated pistons 8:0:1, Diamond piston rings, cryoed L32 connecting rods, Cryoed crank, Clevite77 main bearings, Clevite77 cam bearings, Clevite77 L32 rod bearings, ARP Everything, Intense/meizere true billet Flexplate, Custom UIM, Intense oil pressure kit, Cometic 4 layer head gaskets, OE-R lifters, Cryoed L67 block, ATI turbo dampner, MUCH MORE, 6 more to choose from ASE Certified

Crap, you know how many years its been since I had my Fiero. Holy cow, I woulnt even know where to start. As well it was just a 2M4. It did survive being hit by a dump truck from the rear though, LOL.

The only person I know that would be able to answer your question would be Trannyman. Maybe send him a PM or visit tripleedgeperformance.com and send him an email.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

There really arent options for syncro rings, and that trans is not going to handle 500 HP, I guarantee this! Sure, you can drive the car with that kind of power but you arent going to be able to drive it hard and shift hard with it very long. It was never made for that kind of power, not even close. There are a lot of guys using the L67 / 5 speed combo and I have been a few of those cars. The clutch is a big concern with that setup also. Driving habbits have a lotto do with how long it will last. Im not telling you its going to grenade the first time you drive it, Im just saying that the trans was never made for that kind of power and it wont live long under hard driving conditions. If you are easy on the shifts then it will last until the high power finds a weak point and starts shearing teeth off of gears or snapping shafts.

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www.TripleEdgePerformance.com
4T65E Transmission Info
Voted GPF.net Community Hero

so your saying theres a chance......YEAH!!!! lol

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2001 GTP street car- GT45 turbo,Stage 4 Intense turbo cam,FMIC,150 wet, double roller timing chain, Diamond forged coated pistons 8:0:1, Diamond piston rings, cryoed L32 connecting rods, Cryoed crank, Clevite77 main bearings, Clevite77 cam bearings, Clevite77 L32 rod bearings, ARP Everything, Intense/meizere true billet Flexplate, Custom UIM, Intense oil pressure kit, Cometic 4 layer head gaskets, OE-R lifters, Cryoed L67 block, ATI turbo dampner, MUCH MORE, 6 more to choose from ASE Certified

More like a One in a Million chance lol

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www.TripleEdgePerformance.com
4T65E Transmission Info
Voted GPF.net Community Hero

so I have a biiiiig chance then!!!! YES!!!!!!!!!

if you would have said 1 in a 1000......that would be bad right?

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2001 GTP street car- GT45 turbo,Stage 4 Intense turbo cam,FMIC,150 wet, double roller timing chain, Diamond forged coated pistons 8:0:1, Diamond piston rings, cryoed L32 connecting rods, Cryoed crank, Clevite77 main bearings, Clevite77 cam bearings, Clevite77 L32 rod bearings, ARP Everything, Intense/meizere true billet Flexplate, Custom UIM, Intense oil pressure kit, Cometic 4 layer head gaskets, OE-R lifters, Cryoed L67 block, ATI turbo dampner, MUCH MORE, 6 more to choose from ASE Certified

would cryo help at all???

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www.hellfiremotorsports.com