LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

surge/bucking at 50-60ish mph....

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Old Sep 27, 2008 | 03:04 PM
  #1  
jay_rich's Avatar
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From: Windsor, ON Canada
surge/bucking at 50-60ish mph....

OKay So I just got done with my new harness and I didnt notice before I did the harness (just recently went from a moser 3.73 to a stock 3.42.)

On the highway when I hit about 50ish MPH the car lightly bucks alot tho. Driving in the city there is no bucking issues just cam surge anywhere from 1100-1800rpm. But on the highway it is extremely annoying bc I usually am driving arund 55-60mph around the highway and back roads. It feels like maybe the convertor is locking and unlocking?

With the 3.73 I never had this issue and I think when I switched to 3.42 I didnt but now after a harness swap it seems to be doing it. The convertor is locking fine driving around town tho. My lockups are at 50mph and unlock at 48mph should I maybe raise them so it doesnt lock until like 2200rpm or so?

Driving around 50-55mph I think im around 2000rpm. Also what charts would I adjust for the cam surge?

Jay
Old Sep 28, 2008 | 11:15 AM
  #2  
jay_rich's Avatar
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From: Windsor, ON Canada
OKay I changed my lockups to 63mph and it seemed to be good on the highway....now to help with partial throttle tuning.

Jay
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