clearancing for sbc 383 stroker
12-12-2002, 05:58 PM
#2
Registered User
Join Date: Oct 2002
Location: Auburn MA
Posts: 247
Although every block is not cast the same.. here are some general ideas of where you need to grind:
1. Bottom of cylinder wall near the camshaft.
2. Oil pan rail.
3. Back of the block in the corner... near the thrust bearing (because the crank throw will usually hit it) near cyl #8 I beleive.
4. There are notches near the oil pan rail that GM already clearanced out from the factory, you will need to clearance those more.
5. Oil pan (usually)
6. I also had to clearance my oil pump (because of the crank throw).
I did all the grinding with my father, we used a Dremel tool with grinding bits. Just take your time and you'll be all set
1. Bottom of cylinder wall near the camshaft.
2. Oil pan rail.
3. Back of the block in the corner... near the thrust bearing (because the crank throw will usually hit it) near cyl #8 I beleive.
4. There are notches near the oil pan rail that GM already clearanced out from the factory, you will need to clearance those more.
5. Oil pan (usually)
6. I also had to clearance my oil pump (because of the crank throw).
I did all the grinding with my father, we used a Dremel tool with grinding bits. Just take your time and you'll be all set
12-13-2002, 11:16 AM
#3
Registered User
Join Date: Feb 1999
Location: northeast Miss.
Posts: 2,887
More than likely a couple of rod bolts will have to be ground on to clear the camshaft.
Just put the crank in, spin it over, and start putting rods/pistons on one at a time. Each time, spin it over, see where it hits, and do the clearancing.
BTW: Whats the clearance? 0.100" for heat expansion right?
Just put the crank in, spin it over, and start putting rods/pistons on one at a time. Each time, spin it over, see where it hits, and do the clearancing.
BTW: Whats the clearance? 0.100" for heat expansion right?
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