Alright so my outlook on dropping a 350 in my car right now is that I will by a bottem end assembled crate engine with low compression so i can later put a blower on it. I was looking at this GM Performance Parts 350 C.I.D. 260 HP Engine Assemblies: NAL-10067353 - summitracing.com

And would like to find something similar but w/o heads because I'll be opting for some nice aftermarket aluminum heads. So the question is: Does that engine have enough bang for the buck or would it be more worth building a junkyard block? I've built a junkyard block before but the biggest problem i ran into was the machine work ran me $1200 + $200 for the block. So it would make more sense to me to buy a block like this where I dont have to worry about anything being old. What do you guys think?

 

Don't bother with the regular 350, get the 350HO from GM, it's very affordable and produces more power.

 

i dont think you're going to find anything cheap to buy. if youre going to go with good aftermarket heads anyway, id go the rebuild way. have it rebuilt as a 383 with stout stuff and low compression. depending on how much HP your going to have you dont know if a cheap bottom end is going to handle much.

 

This motor is only suitable for very low boost supercharged applications. it has non- hi performance cheapy cast pistons.
ok up to about 5-6psi. If you plan on more boost you should build your own low compression motor with stronger pistons and larger blower friendly ring end gaps. Federal Mogul has nice 22cc d dish blower/turbo forged pistons, just right for a blown 350.

 

Just curious, how much hp would 5 psi produce?

 

These are 295/50/R17s on the back of a fullsize van!

YouTube - Rolling Burnout

Weiand 142 supercharged 350 TBI @ 3-4 PSI

 

I was curious about this particular application, because I'm interested in the same setup. Stock 330 with no intake and up. Drop the 6-71 in with about 5 psi boost. How much hp would the boost make?

 

plan to add any major boost, better get forged bottom end, or you'll just crater it..........

 

About 20%. A mini blower would return a little more @5psi cause it takes less power to spin the blower.