cgworth

iTrader: (11)

i just got my rotatig assembly together and turn it over by hand to check clearence's, it appears that the rod for the # 1 piston is hitting a lobe on the cam, anyone else had this problem? what cam will fit without problems? its a 383 rotating assembly and the crank is a scat

96lt1m6

iTrader: (31)

you can get the same cam from crane and it has a reduced base circle that will be the least expensive way to cure the clearence issues

96lt1m6

iTrader: (31)

also tell everyone what rods you are using,you noted the crank but the rods are the real issue here.

cgworth

iTrader: (11)

they are 6 inch scat rods, i also just intstalled a hot cam and it has the same clearence issues,, the part that is hitting is the outside edge of the rod, whis is the housing for the rod bolt wtf.....

DroppedM6Z

iTrader: (5)

It's not the cam, Z284thgen on here used the GM847 in his Eagle 383 with no issues. Crane grinds the GM847 for GM preformance parts so swaping cams wont fix your rods hitting
As i stated, way to test but it looks to be in the fitment of the Rotating assembly

mightyquickz28

iTrader: (8)

I just assembled and installed my 383 stroker in my '96 last month. During assembly, I found that, though the block had been clearanced, the Canton oil pan was being lightly struck by the cylinder 7/8 counterweights. The oil pan turns in a bit on one side (drivers side?) and it had 'just enough' interference to stop the crank. Peeled the pan off, dinged that spot with a ball peen hammer, trial fitted it and bolted it together once it cleared.
Dave

cgworth

iTrader: (11)

looks like going with a small basecircle is the answer right now, anyone got any idea who would have the best price for a custom grind?

96lt1m6

iTrader: (31)

crane has most grinds available with the small base just call them up

carzman5678

Mine did the same exact thing, just had to slighty take a small amount off by the bolts.

lethal93ta

its in the rods them selves, thats one of the reasons I got manley rods for in mine I know that they fit in every other stroker we built before, we have to grind a little off eagles and scats all the time to make them clear.

cgworth

iTrader: (11)

yea i just ground the corners and they fit fine now, thanks guys

lethal93ta

now if you ground the corners off make sure that the balance on the crank is good, taking weight off the rods will throw the balance off, thats why you pre fit everything on a motor then pull everything back down and balance everything.

redneck01

iTrader: (3)

mine did the same thing..but i just shaved a hair off the rods.

BlackScreaminMachine

iTrader: (17)

Ron knows his ****, I remeber the time when he did is rotating assembly omg that was alot of work

FASTFATBOY

iTrader: (23)

ARP makes a 1/2 head rod bolt, they come in some Eagle rods for stroker clearance.I got these bolts for the other 383 and I didn't have to grind on the pan rail. May fix your problem without changing cams or grinding bolts.


David

lethal93ta

my crank was a pain to balance, I bought a lightend crank made for a 383, it the counter weights should have cleared the block, every time I put it back in the block it was hitting, I had to take so much stuff off there it was nuts, I had to put slugs back in the crank to balance it, eagle to me is a waste and I will never buy from them again, they gave me no support on it wouldnt admit to a problem nothing, but the next eagle crank we ordered for a customer had an tag on there stating to check clearance before balancing and the spots it hit on mine were clearanced, the balance was still way off.

awdfun

iTrader: (1)

I just finished my build also. I have a Eagle 383 (6" Rod) with the GM847 and the rods just barely hit the cam. I had to grind the corners of the rods about .10 to get it to clear.

lethal93ta

just remember you need .030 clearance between parts, it might clear now but when parts are swinging at 6500-7000 RPM you need extra room.

borninatransam

iTrader: (4)

when we order the parts for my 383 we order 6 inch rods and a small base circle cam to keep the clearances good.

1997bird

iTrader: (2)

Just one quick question, were you checking your clearance with the timing chain installed?