bore stroke/rods/pistons
 

ok so im putting a 355 into my 305 iroc, instead of buying a new ( used lol ) block, couldnt i just put a new bigger crank/rods/pistons and bore/stroke the 305 to make it a 355?

In short, no. Not the same block, and you will have to get new heads if you want decent flow, and a slew of other things. 350 blocks aren't that hard to come by.

305 CRANK AND RODS ARE THE SAME AS 350

well im getting new heads and cam and doing up the tuned port injection and stuff, i thought they were the same block but since there not..thanks guys

I've seen a few stroker kits for 305s that bump your C I s up to something in the 320-330 range. A lot of people diss the 305 for it's small bore and crappy heads, but if you are on a budget and wanna use what ya already have the stroker kit might not be a bad way to go. It's such a great time for automotive technology that just about anything can be built to run good. :)

305's = valve shrouding = limited performance

Yeah you won't be able to bore out the 305 block to a 350. You can get a "Mexican" block for about $600.00, my engine builder buddy swears by them, he's used them for over 900 builds and has yet to have a problem. I think the only real difference is it has holes on both sides for a dipstick.

well im getting a block for 400-500 dollars, then for 1500 he's building the rest of the motor. and im going to get a holley stealth ram i think for the injection, and a TPiS big mouth manifold, 30lb injectors and a 52mm throttle body to finish it all off. but its getting at least a .500 lift cam he said plus head work and what not

and UBG that kit is a 335 stroker kit and the kit alone is 600, then u have to balance it, then for all the machining and other parts. its just not cost effective in the least.

I C. Yeah, it makes more sense to go with the 350 when the bux are added up.