Originally Posted by 4bus (Post 3789821)

I disagree mike, there is this guy in Texas that builds 540s.............

Ah, nevemind :D hahaa

Wish you were closer, my 575scis are coming out in a few weeks

Originally Posted by MILD THUNDER (Post 3790342)

You should have the Gen VI block if thats the case. Thats better than the Gen V. Usually they can take a bit more boring, but overall a better foundation.

The very early merc 502 mags and HP465's, like 1990-1992 used Bowtie blocks, mark iv style. Those are good foundations.

IMO, when building, keep the bore size minimal to keep as much meat for future rebuilds. The extra .030 or .060 isnt gonna make magic happen. Sure maybe on some builds it might gain 10,15, 20hp, but theres better ways to find that power without compromising the integrity of the block, unless mandatory.

Originally Posted by MILD THUNDER (Post 3790345)

Its not that far, and Mike always has a cold beer handy in the shop fridge waiting for ya.

Plus, while he's freshening and building your motors, you can get the stock blowers over to Darren Meyer in Michigan. He knows those blowers well and does several mods to them that helps make them more effecient, and very reasonably.

Originally Posted by MILD THUNDER (Post 3790630)

A good combo for a GM production std deck 502 block, is a 4.25'' crank, 4.500 bore. A 540CI.

Larger bore with that stroke, imo, is better left to the bowtie, dart, merlin blocks. Like 555/565ci. More stroke than you need the tall deck block. You dont want to have to run pistons with the pin to far up to compensate. You want a decent rod angle also.

Originally Posted by 4bus (Post 3790646)

:D

Is Darren Meyer DPME? If so I have already talked to them, and am sending the blowers out soon. Going with teflon stips as well, smart people when it comes to blowers.

Originally Posted by My Addiction (Post 3791036)

When stroking, I have heard it all about the rod ratio...

http://www.chevytech.com/2c27o1.html

Originally Posted by the deep (Post 3791083)

:readinghelp:

Originally Posted by mrfixxall (Post 3791088)

rod legnth,,helps put less pressure on the side of the cylinder walls..the only number you need to worrie about is for your 540 which is 6.385..i would just sell yours as a whole and start with a stronger block..you will be better off in the long run..think about it,whats your engine worth now? 5k..your going to tear it down,and not use anythinf but the block and maybe get 1200 for the old wore parts..a dart block is 2300??then the rest of the goodies..add it up..