kylloso

i bought a cheap *** regrind cam from a guy and wen tuning for it im shiftin at 7k with my lil 4.8 and sounds pretty down loud wined up sh it load of topend for me i think

454navyss

iTrader: (46)

what you were talking about with the 4.8 crank in a 6.0 block is pretty much the same thing as destroking a sbc 400 to a 377. a guy at work has a 377 in his dirt track car, it runs at 9000 rpm all night long. they make good power but their main advantage is being quicker revving over other stroker motors, you just need to buy good parts becuase with the higher rpm comes more wear and tear.

Beatdown Z

iTrader: (18)

I have a built 377 in my 67 Camaro. They're badass engines It hasn't been in very long, so i'm still doing some tuning and tweaking before i start winding her up.

nightrunner

iTrader: (4)

the setup for HP with high rpms is big bore and short stroke. take a lq4/9 block bore it .030 over if necessary, drop in the 4.8 crank if you can get the rods and pistons to make it work. (i believe when this was seriously looked into awhile back, that you couldnt get rods that would work?) you would then have a 7500rpm ++ capable motor and actually be able to make some power with it.

would be perfect with a t56 and a lightweight flywheel

AdioSS

iTrader: (2)

why does everybody ALWAYS want to destroke an engine when there is talk about high RPM?

nightrunner

iTrader: (4)

because long stroke, high-rpm engines have alot of piston velocity and that wears things out VERY quickly and most of the time you dont want to have to rebuild your street engine every oil change.

BigCountryx

iTrader: (3)

Not really a help for the OP, but I do know of an LSX being built that will be shooting for 1000 fwhp N/A while spinning somewhere in the 10000 rpm range... Yes, the dood is a nut, but he's very good

Mr. Sandog

Link? Email address? I'd like to talk with him.

AdioSS

iTrader: (2)

Did you read my first post in this thread?

dirt track racer 81

iTrader: (45)

big bore short stroke, lightweight rotating assembly, good heads, good intake, big cam, shaft mount rockers, lightweight valve train..8000+ no problem.. +1 on 377 motors quick high revvin motors