both bare blocks...whats better for building a decent street engine for my car?

 

350....

 

Although the 327 block is a strong son of a gun, and could handle the .060 bore...I would build the 350....Im speaking from experience....much more potential out of the 350. All 327's are 2 bolt..unless after market caps are used..2 bolt 350 will hold 500hp on a good build..how many horsies you looking for?

 

It's already .060" over? And used? Caution advised. Should check for taper and have it sonic checked for wall thickness. Shouldn't be your first choice.

All other things being equal, a 355 will make approx 5.2% more power than a 336.

 

stress bored then never got built...the kid traded the crank. pistons and connecting rods for anothe engine

 

why is the 350 better...both engines are 4 in bore so i could use nice 2.02 heads..

 

More displacement means more air/fuel is pumped through it, so more power is produced.

The 350 has a longer stroke which enhances torque. For the street, you'll make more torque/power at lower RPMs, again all other things being equal, which is what you want for the street.

If the 327 doesn't have a crank, you need to know if it is small journal or large journal. If it is large journal, it's either a 327 or 350, depending upon which crank you put back in it. If SJ, you'll have a little more trouble finding a crank and rods for it.

 

Both blocks are two bolts so your gonna want studs and a girdle for a decent build up for either. The 350 will produce more torque than a 327 because of the stroke, but a 327 can haul bananas if built right.
I prefer the scream of the 327 and as far as I'm concerned, there are too many built 350's out there (not to offend anyone in any way, just my opinion).
Both blocks are capable of pushing the horsepower with correct work (destress, studs, girdle, etc...)
It all depends on what you want the car to do.
My 327 pushes 589 horse at the flywheel and moved my S10 to a best of 9.89 which is plenty quick enough for a street car.
A 350 is capable of the same, but I do agree with others that the 350 is a more suitable street engine due to the longer stroke.

 

not sure either way..im going to pull the casting numbers from both blocks to get more info....

if i can find a crank for the 327 i think thats the route im going to take..

 

Depending on just how much power you want to make, the 307 has the same stroke as the 327, but you have to check the main journal size of your block.

 

If you really want to do something unique, find a 283 crank and drop that in the 327 block if its a SJ block.

Good Ol' 302

 

I would build the 350 for reliability

I am building a 327, to save my car-it had T-tops
The block won't hold for very long, taking that much out of it
But if its a weekend warrior, who the hell cares build what you want

 

nothing was taken out of the 327..it was stress bored...not honed..a machine goe inside the cylinder and heats up and expands...makes the blocks strong as hell