Supercharged 3.1 in a Sonoma

[1QUICKHATCH]

Any updates on this? track times/dyno #'s? Is it still running a stock cam?

I am thinking of doing a similar project to this my self but in a larger truck!

[caffeine]

The truck was sold about two weeks ago. Supercharger was removed because belt would not stop slipping and was choking the motor at higher rpms. What it really needed to work was a dedicated crank pulley and belt, preferably 8-rib since the charger already had an 8-rib pulley anyway.

However the motor itself ended up being awesome; never burned or leaked any oil, plenty of power for a little truck like that.

[Mars]

i wonder if a smaller pulley would have helped the choking motor at high rpm?

i would love to SC my blazer... was even lookin for a M90..

[caffeine]

I don't think a smaller pulley would have helped. It was choking the motor because the belt was slipping, causing the charger to turn too slowly. With the stock pulleys it was only making 4psi when the belt would start squealing at around 3000 rpm or so.

[Mars]

Weird, there must have been an easy fix...

6 rib should hold man, some people run TINY pulleys on them things. I mean like 1" i dia. haha.

Was the belt super tight ?

I want to do a SC 3500 but with a custom intake manifold, and bolt the blower right to that.

[caffeine]

The belt was tight and wrapped 90% of the SC pulley. Crank pulley was wrapped less probably around 30-40%. I think the fix would have been a separate belt for the SC. Sorta like what the 3800s and T-bird super coupes have.

[Mars]

I didnt know they had that. good info.

[1988GTU]

Was the tensioner too far extended or not bound too tight?

[caffeine]

Tensioner was fine and was from a low mileage 3500. Belt was pretty tight but at the same time it was a very long belt.