1G 6 bolt 4g64 caps in a 4g63?

[Anthony Boni]

I have a G4CS block with some cylinder wall damage after the previous owner goofed and set the incorrect piston to wall clearance. I’m picking up a 4G63 block without the main caps. My plan is to use the 63 block with my G4CS crank (it’s a 6 bolt 100mm crank, for those who may not know) in the 4g63 block with some stroker pistons to make a 2.3l stroker. Because the block I’m picking up doesn’t have the mains, can I just use the main caps out of the G4CS? I’m getting ARP main cap studs and a kiggly girdle, so I’m going to need a line bore anyways. Thanks!

 

[SasaniFab]

I have a G4CS block with some cylinder wall damage after the previous owner goofed and set the incorrect piston to wall clearance. I’m picking up a 4G63 block without the main caps. My plan is to use the 63 block with my G4CS crank (it’s a 6 bolt 100mm crank, for those who may not know) in the 4g63 block with some stroker pistons to make a 2.3l stroker. Because the block I’m picking up doesn’t have the mains, can I just use the main caps out of the G4CS? I’m getting ARP main cap studs and a kiggly girdle, so I’m going to need a line bore anyways. Thanks!

Yes you can with line bore or test out the jay racing billet main caps. Always wanted to try those
Out

 

[Crackerman]

The g4cs caps don't have any tied together, they are individual, unlike the 2 pairs and a single a 6 bolt has.
But with a girdle, should be good on rigidity.

As long as the caps "register" in the block fine, it "should" be ok with a line bore.

 

[Anthony Boni]

Yes you can with line bore or test out the jay racing billet main caps. Always wanted to try those
Out

The g4cs caps don't have any tied together, they are individual, unlike the 2 pairs and a single a 6 bolt has.
But with a girdle, should be good on rigidity.

As long as the caps "register" in the block fine, it "should" be ok with a line bore.

Hey thanks for the replies fellas. This is my 2 liter with the G4CS main caps. I do plan on getting ARP main studs and a kiggly girdle