nightrunner

iTrader: (4)

does anyone make a 5.3L - 325c.i. (3.779 bore x 3.622 stroke) forged rotating assembly?

or am i just goin to have to bore to 5.7L and get 5.7L pistons

i can find the crank

and will 6.125 connecting rods work or do i need a different size

willyfastz

I'll look in my Callies books and see if there's a piston for the 5.3. I'm sure there should be, I just haven't built any 5.3's.

nightrunner

iTrader: (4)

make sure its a forged piston

and i will take as high of compression as i can get

1ImperialSS

iTrader: (5)

if they cant find one i think you would be happier anyways if you bored it to a 346...

1slow01Z71

iTrader: (36)

seriously man why waste time with a stock cube motor go bigger. You dont need a forged crank these stock cranks can take 1000hp, and the rods arent exactly weak either. If it was me I would bore it out ot an LS1 bore where you can get off the shelf pistons which are cheaper throw some arp rod bolts in the stock rods and call it good.

1ImperialSS

iTrader: (5)

nightrunner

iTrader: (4)

well i actually need nitrous pistons...

i want to build a 5.3 to prove that they can make power

i plan on either a large direct port nitrous setup
OR
a radix with a medium direct port

1slow01Z71

iTrader: (36)

If oyu are on a mission to make a 5.3 make power then forged rods and pistons would be the ticket no need for a forged crank like said before. I would still rather go larger in displacement but thats just me. IMO the point has already been provent hey can make good power. Hell there is even a guy with a forged 4.8 theats blown turing mid 11 passes IIRC.

nightrunner

iTrader: (4)

actually the main reason im doing this is because the truck will be my daily driver (bolt on + small shot)for a while until i can get a HD for a DD

i will be pulling the motor to build it though

v8

iTrader: (10)

how much power are you shooting for with the 5.3? I do believe greysilver went 11.77 with nos and bolt-ons with a stock 5.3.