a460 block question ?

as some of you guys know i run the "RPM" line of crankshaft in my deal and jetBoatBob had to do some block machine work for clearencing . Is there going to be an issue when i uprade to a better "usa" crank ?

No sir.

bruno wrote:as some of you guys know i run the "RPM" line of crankshaft in my deal and jetBoatBob had to do some block machine work for clearencing . Is there going to be an issue when i uprade to a better "usa" crank ?

what was the deal with the rpm crank?...what stroke 4.5?

from what i remember the counter weights are wide so the block had to be machined ...... im really not sure ???? btw it is a 4.3 deal

hmmm... I wonder if scat or bryant cranks need that extra room?...

bruno wrote:from what i remember the counter weights are wide so the block had to be machined ...... im really not sure ???? btw it is a 4.3 deal

It aint the swang........the rpm deals are/were narrow at 2 and 4.....no end play.

138 wrote:hmmm... I wonder if scat or bryant cranks need that extra room?...

Bryant's dont.could'nt say about a scatt but i'd guess not.

Scat works.

Lem Evans wrote:Scat works.

X2

As do the Crower stuff.

richter69 wrote:

Lem Evans wrote:Scat works.

X2

X3 so does Precision Forged Stuff.....

Lem Evans wrote:

bruno wrote:from what i remember the counter weights are wide so the block had to be machined ...... im really not sure ???? btw it is a 4.3 deal

It aint the swang........the rpm deals are/were narrow at 2 and 4.....no end play.

so Bob clearance the block or the caps for end play ?? im confused ...educate me

The A460 blocks have thicker main saddles than production blocks........seems some Chinaman did not know that.....so Bob had to mill a little off of one or two of them to get the crank to turn. He did not mill the caps.

richter69 wrote:

Lem Evans wrote:Scat works.

X2

Forged Scat 4.5" in my A460 block fitted with no extra work.
Cheers Colin.