500 bulldog question
10-04-2012 | 07:03 PM
#21
Registered
Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
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.
10-04-2012 | 10:13 PM
#22
Fast Singles Club
Joined: Oct 2011
Posts: 4,042
Likes: 490
From: Raystown Lake , Pa.
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.
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.
10-05-2012 | 08:43 AM
#23
Registered
Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
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.
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.
10-05-2012 | 09:11 AM
#24
Registered
Joined: Jul 2007
Posts: 3,648
Likes: 32
From: Oneida Lake NY
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.
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.
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.
10-05-2012 | 09:22 AM
#25
Fast Singles Club
Joined: Oct 2011
Posts: 4,042
Likes: 490
From: Raystown Lake , Pa.
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.
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.
10-05-2012 | 09:23 AM
#26
Registered
Joined: Jan 2003
Posts: 6,018
Likes: 1,521
From: Grand Rapids, MI
10-05-2012 | 09:12 PM
#27
Registered
Joined: Oct 2007
Posts: 1,224
Likes: 0
From: marbury, md
10-05-2012 | 10:27 PM
#28
Fast Singles Club
Joined: Oct 2011
Posts: 4,042
Likes: 490
From: Raystown Lake , Pa.
10-05-2012 | 10:39 PM
#29
Registered
Joined: Aug 2005
Posts: 6,306
Likes: 1
From: Between A Womans Leggs in IL
fixx
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..
10-05-2012 | 10:58 PM
#30
Fast Singles Club
Joined: Oct 2011
Posts: 4,042
Likes: 490
From: Raystown Lake , Pa.
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..
Gotta see trips with the cat and trying to decide the best way to get there . Blowers are great but seems to be a whole lotta other issues that go with them . I,m starting to wonder if it would be better to just freshen the HP and hang a blower on it . 
871 and two fours . Hmmm , what to do.......
