Well I just seen you could buy 406-434 short blocks. I already have everything set up for sb, so I would be pretty much just putting a new short block. Do you build a 434 pretty much the same as some of the 406 builds you see as far as cam etc...any 434 builds to look at somewhere? I see tons of 406 builds in chevy hi performance etc.. but not much on 434s
You will have to check to make sure the cam isn't going to get hit by a rod, if so you have to use a small base circle cam. The block will have to be clearanced, and a kicked out oil pan will have to be used.
I recommend using a good piston-JE, SSRP, Ross, someone like that. I would imagine the side load on the piston is pretty steep and piston speed is certainly higher than a 350.
Call a cam company and see what they recommend. I am using DART Iron Eagle 215's that have been touched up a little and a Pete jackson gear drive. Flat tappet solid lifter cam.
Intake is a Victor Jr with 850 DP carb. Will get 600 HP on pump gas (or very close). 1 and 3/4 primaries on the headers.3 inch exhaust.
the car of course has to be built to use the pwer the engine is making effectively.....all steel 68 with cal tracs, 4.10 gear, 3500 stall converter (3800 really) in a THM 350
I am using a SCAT rotating assembly with JE pistons in mine. Short block is done.
If you are going to spray it something stronger in the bottom end will be a wise investment to get a callies crank or similar.....they are $$$.
sure, nothing wrong with building a good short block and upgrading heads and cams and induction/exhaust later.