11/23/04

I have a ’27 Coupe with a 460 BB Chevy and PG transmission. What is the proper trans mount to use, solid or poly? The engine is solid mounted, full cage, and is used strictly for bracket racing. Thanks, Peter Johnson

Peter, The proper mount to use is a poly mount! We do not want the transmission to be a rigid part of the chassis so we put a flexible transmission mount to absorb the flex. If we mount the transmission solid we risk bell housing breakage from flex. The transmission must flex with the chassis.

Thanks,

Mike

Hey guys, I have a weird thing with my turbo 400 in my Chevelle. It is behind a 454. The car goes into gear fine. Under normal acceleration, the car smoothly but kind of slowly, shifts to second and then shifts very firmly into third. Another strange thing is if I stand on the gas it will usually chirp the tires and then of course chirps them in third. Finally, under medium acceleration the car shifts smoothly into second and firm into third, unless I let off the gas a little, in which it will what I call “drag” or shift slowly into second gear. I know my vacuum is low on the car, but can you think of any reason why this is happening? Not sure if it has a shift kit. I bought the car from someone and have not touched the tranny. Thanks, Steve Smith

Steve, It sounds like your intermediate clutch is burned; it may have started out as a transmission setup problem, possibly the pressure is too low to hold the load or something like that. At this point it would warrant an inspection internally to assess the damage. In other words tear it apart and eyeball the internals; it may have a clutch problem or a second gear spring problem. The transmission may need to be tuned up to match the engine and car setup.

Thanks,

Mike

To contact Mike Stewart email trannytech@dragracingonline.com