Thread: Thinkin of buildin a 4.3 need some help.

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ok ive got some domes laying around on stock 350 rods will they fit in the 4.3? i thought i heard that something with the rods is different.
and are refurb'd motors usually bored out??
and is it true you can buy oversized rings to use stock bore pistons in a overbored cylinder?

>ok ive got some domes laying around on stock 350 rods will they fit in the 4.3? i >thought i heard that something with the rods is different.

If you're refering to the 4.3L V6, yes, they are different. They have 2.250" diameter rod journals instead of the 2.1" used by the 250

>and are refurb'd motors usually bored out??

Yes.

>and is it true you can buy oversized rings to use stock bore pistons in a overbored >cylinder?

No.

Bob

thank you sir!

if a bit loose you can get the pistons knured and you can get a .005 over rings not hi on my list of things i like to do but i have done it on race engines when a guy just dont have 750. for new pistons and i get the bores strait you can get .005 on the pistons easy with the knuring but stock cast pistons are very cheap so i have only done this with race pistons or forgings and yes the 350 chevy pistons do work i have built some 4.3with the 350 pistons

ill have to see if the bore is still 4.00 inches. if not then im gonna leave the internals stock.