Lack of acceleration

[jimmy78]

I have a stock 5.7l 350 with a turbo 400 transmission. I don’t know what my rear gear is but the truck is lacking hard acceleration. Engine revs up and it takes a long time to build any real speed.

Is this a transmission gear issue or could it be a rear gear issue?

Clearly I am very new to this world of mechanics but would like more acceleration.

 

[Ricko1966]

I have a stock 5.7l 350 with a turbo 400 transmission. I don’t know what my rear gear is but the truck is lacking hard acceleration. Engine revs up and it takes a long time to build any real speed.

Is this a transmission gear issue or could it be a rear gear issue?

Clearly I am very new to this world of mechanics but would like more acceleration.

Probably best thing you can do right now is figure out your 0-60 time and post it. My car doesn't accelerate hard doesn't give us anything to work with,first we need to see if it accelerates normal,for what I am assuming is a stone stock 78 jimmy. We don't even know if its 2wd or 4wd. More info please.