|Originally posted by PacNWFiero:|
Thanks RotrexFiero and Monkeyman! I am planning on using the 5-speed from the Formula, as I do not want any extra hassles or expenses with a transmission swap. I've heard differing opinions on if the '88 5-speed is strong enough to handle the torque of the 3800. If I don't mod it at all, do you guys think the tranny would hold up?
If you decide to keep the 5 speed, just bear in mind that most of these boxes are old, worn and slow shifting. The GETRAG was designed for 200 ft lbs of torque new. An old high mileage box won't meet that spec. but lots of guys seem to like them. I personally recommend going with the automatic transmission that GM designed especially for the 3800. Then you will have a matching powertrain package ready to take on full throttle runs. Driving a stick may be fun but I personally know a few guys here that have blown the Getrag cases apart.
If you are set on the 5 speed, just drive conservatively. If you keep the stick you retain the 5 speed trans mounts, and axles for the swap but you will need a new clutch and flywheel. If you go auto you will need new mounts and custom axles. I've done both swaps and the auto is more work but comes out costing about $100 less even with pre-fab mounts/brackets.
------------------ " THE BLACK PARALYZER"
-87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite. "THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
[This message has been edited by Dennis LaGrua (edited 05-23-2015).]