1987 g-body breaking trans cases? anybody have this problem?
#1
Junior Member
SHOW GUEST
Thread Starter
Join Date: Dec 2008
Posts: 4
1987 g-body breaking trans cases? anybody have this problem?
i have a 1987 cutlass, bbc, 9 in rear and most of a 10 point cage. (stock interior) i've had problems busting powerglide cases at the bell housing.
i put on a ultra-bell and stopped that. now this weekend i cracked the main body. do i need more cage? the bars going out to through the firewall? any help would help. thanks in advance
i put on a ultra-bell and stopped that. now this weekend i cracked the main body. do i need more cage? the bars going out to through the firewall? any help would help. thanks in advance
#7
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
I run the G body, and haven't had problems breaking the trans. I don't have down bars in the front but i do have a front motor plate, and i run the softer stock (not poly) rear trans mount. The only time i broke a trans case was when i broke a drive shaft and it pushes forward, actually i was running clips on the rear u-joint and it pulled the threads on the 5/16 bolts which cause the drive shaft to jump out of the rear yoke and go forward. Broke the trans in 8 pieces, the only thing holding it in the car was the converter, i put it back together with another case, didn't hurt anything and i was back in business.
Zip.
Zip.
#8
Junior Member
SHOW GUEST
Thread Starter
Join Date: Dec 2008
Posts: 4
i'm running stock suspension, adjustable upper and lower control arms, custom cut drive shaft. i'm now thinking i might have a balance issue with the crankshaft. the engine vibrates the car pretty good. the cam in the motor has around .680 lift, so i was thinking the shaking was from this. i was told this could be a problem. so now its on with more cage and send the rotating assembly to the machine shop. i'm going to eliminate these two problems anyway. thanks for the info. i was hoping somebody had these types of problems to steer me right. i will post what i find.
#10
Senior Member
DYNO OPERATOR
Join Date: Oct 2004
Location: florence ky
Posts: 498
Put a stock rubber mount on your trans and it should stop breaking the solid mount want give enough i used a poly mount and did the same thing changed it back to the rubber mount and never broke another one.