by dpuckett » Sat Mar 06, 2010 8:34 pm
Where is your TPS? IF it isnt going into OD, that explains why it wont hold 70mph- it's way out of its power band, even if you have 3.54s (and dont even think of 70 with 4.10s). How does it do towing at 45-55mph?
Your timing looks good for towing, daily driving, etc. I'd say check your lift pump output (you can get a banjo bolt from geno's, and plumb in your boost guage to check it fast. Dont leave it hooked up for long, the pulsing will kill the gauge, but you can leave it in for a few minutes to drive it). You will have to go down the road to see if it pulls down under a load.
One thing at a time- get your smoke figured out, then move onto power transfer. Though, 25psi boost sounds good for a 93 with an auto. My mom's only makes about 22psi; pump made 30psi in my 5spd truck (all else was equal), just for a comparison of a stock auto power draw vs a 5spd.
Not all transmission rebuilds are alike. if it was done to stock specs, it still lacks a lot. Not many shops know how to take advantage of a 1500 rpm peak torque.
How many miles are on it? If <300K, I'd say it's not likely to be worn out. Possible, but not likely. On that note, have you had your inejctors checked?
I like the bumper- add a grille guard to it, and I'd put it on my pickup.
DP
His- 93 W250 club cab LE, auto to Getrag conversion, piston lift pump, 3.54 LSD. 400k+
Hers- 04 QC 4x4. Built auto, Triple Dog, Air Dog. Funny Round truck that aint so quiet.