Transmission Shot?
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 3,280
Likes: 0
From: Virginia Beach Virginia
Transmission Shot?
My '75, ZZ4 crate engine, with the original TH400 transmission acts terribly at WOT. From a standstill and then laying on the gas to WOT, it will accelerate hard until changing to 2nd and then it will almost pause, surge and then change gears. It's a terribly rough shift and once when I was laying on it, my Vette actually choked out and died. I want to believe the shift took took long, the secondaries poured too much gas in, and choked out the engine.
If I just drive casually the car has no problems at all. The shifts are as gentle as ever and I have no problems. I only have problems at WOT.
So, what do you think? Is it the transmission? What else might it be?
If I just drive casually the car has no problems at all. The shifts are as gentle as ever and I have no problems. I only have problems at WOT.
So, what do you think? Is it the transmission? What else might it be?
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Getting sketchy there, but IMO, i'ts a carb thing with the engine...not the tranny, say is you get on it maybe 3/4 throttle, NOT WOT....what happens?? if it does it's thing at decent power it's not the tranny...
check fluid levels/color and if possible, temps....don't sound like any 400 I know in MY history...not built decent anyway...
GENE
check fluid levels/color and if possible, temps....don't sound like any 400 I know in MY history...not built decent anyway...
GENE
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 3,280
Likes: 0
From: Virginia Beach Virginia
Originally Posted by mrvette
Getting sketchy there, but IMO, i'ts a carb thing with the engine...not the tranny, say is you get on it maybe 3/4 throttle, NOT WOT....what happens?? if it does it's thing at decent power it's not the tranny...
check fluid levels/color and if possible, temps....don't sound like any 400 I know in MY history...not built decent anyway...
GENE
check fluid levels/color and if possible, temps....don't sound like any 400 I know in MY history...not built decent anyway...
GENE
I never thought much of the carb because less than a year ago, Lars came to Northern Virginia and tuned it.
