1990 350 4 Bolt Main

[michaeljames]

I got a really good offer on a 350 4 bolt main fuel injected motor out of a 1990 dualie. any info on this motor? from what I can figure out, I would like a engine code, specs, fuel managment info etc I cant find anything on the 5.7 that came in the 1990 dualies, its a good deal on a good running motor, I would like to find out more cuz I dont want to pass up what I think is a torque monster in the rough

[outlawfab]

don't want to sound negative but a 350 is not a torque monster and neither is a 454 tbi. if you want grunt up the gears. i have been through a few dually's over the last 20 years and my experiance has been the gear dosent hurt milage solo but increases towing milage. 1987 c-30 milage was at best 8 mpg 350 tbi ran well, better than the 6.2 at the time. 1993 k30 454 tbi to be honest ran no better than 350 tbi. 1995 c 30 6.5l td milage solo highway was 19 and towing was 10. 1998 gmc c3500 454 4.56 gear 16 solo 12 towing. 2001 chevy dmax 4x4 22 highway 14 towing and 08 gmc to be determined. all trucks were duallys towing a 42' 5th wheel. upping the gears on the older trucks greatly improved performance even though milage didn't change. still have the 98 (the beater) which turned 300k and 01 with 140k (my current daily driver). i put aprox 20k miles a year towing from florida to maine roughly 40 times a year.