408/360 question
So I've been doing a lot of thinking and I might just bite the bullet and do a 408 build but I just had a few concerns but my main one; is can I just simply take a 360 block (obviously after being bored and shop prepped) and drop in a 408 rotating assembly? I know the basics to building but will the extra stroke require any grinding of the bottom of the piston bores? Because if that's the case I'd be willing just to do a nice 360 build but the 408 kit is internally balanced so I can use my 318 flex plate, stall, and harmonic balancer. So I was wondering if any of you know of a company that sells internally balanced stock stroke 360 cranks? Thanks for any help -kory
Yes. My 408 is a bored and stroked 92 360 magnum block. I push just over 500hp out of it. You would do well to get a good stall if you don't have one already. Here is what I run:
1992 magnum block
scat 4" stroke crank
Scat forged i-beam rods
Diamond flat top pistons (11.8:1 compression)
total seal rings
Engine Pro main, rod, Cam bearings
Fluid damper
cloyes double roller timing set
Cometic head gaskets
Edelbrock performer rpm heads (gasket matched w/ light porting)
Smith bros pushrods
Comp 1.5 ratio shaft mount billet roller rockers
comp hydraulic roller lifters
Comp Cam
242/248 Dur@ .050, .3660/.3630 lift @ .050, 112° lobe sep. 549/544 gross valve lift
Comp valve springs, retainers, keepers, locators
ARP head studs
ARP bolts used throughout
melling hv oil pump
Edelbrock RPM Air Gap intake
MSD Pro Billet distributor
bronze dist gear
Taylor wires and looms
New ngk plugs
Holley 750dp mech secondary manual choke
Mopar MSD 6 Ignition box
Blaster2 Coil
Adjustable rev limiter
It is a beast and it will never get good mileage. Original dyno was 498 peak hp and 528 ft/lb torque. I have done a little to it and figure it is low 500's now.
I love this car and every time I get on it all I can think is "Holy ****! This thing is fast!"
So .... do it. You will never regret it.
