Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 02-06-2003, 08:39 PM
J-440's Avatar
J-440 J-440 is offline
Inactive User
 
Join Date: Jul 2002
Location: Friendswood, TX
Age: 53
Posts: 321
Default Main cap swap

How's it going people? OK, here's the skinny. I am building a 750 hp monster 440. I'm using a lot of expensive parts and will be road racing this beast in the future. Right now I am using the stock main caps with ARP studs so the bottom end won't explode. Should I trash the stock mains and go with the steel billet caps we all see in the local Summit mags? I'm just getting started and any advice would be appreciated.
The block is an original 68 440, honed, skimmed, magnafluxed you name it. The crank is also the original forged piece. Compression will be 8.5:1 with the s-charger if that helps. Thanks and once again, I appreciate all of your comments.


J-440
Reply With Quote
  #2  
Old 02-06-2003, 10:23 PM
goose69's Avatar
goose69 goose69 is offline
Inactive User
 
Join Date: Apr 2002
Location: tigard,or
Age: 52
Posts: 51
Default

I thought I saw a deal on using 4 bolt hemi style caps and machining the block for them.
Did anyone else see this? Or was there too many beers in me that night?
Reply With Quote
  #3  
Old 02-07-2003, 03:59 AM
DartGT66 DartGT66 is offline
Inactive User
 
Join Date: Sep 1999
Location: vantaa,finland
Posts: 4,622
Default

The main caps isn't the weakest point, it's the main webbing in the block. Billet caps will not help it, they'll make it worse since they are harder and it will also hit the block harder. There has not been very good results in converting the wedge blocks to a cross bolted style; the mod is expensive and the block is still weak. the only way they have been able to avoid block problems in the longer run with a lots of power is using aluminum main caps. I don't know if that works in an endurance engine though. Your best bet power and reliability wise would be going with a MP cross bolted block.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
rod & main bearings??? speedfreak Ram Truck Chat 6 11-11-2005 08:04 AM
383 or 440 main cap? toad490 Performance Talk 13 11-16-2004 10:32 PM
main cap help matts dart Performance Talk 4 10-19-2004 10:09 AM
s/b main brg daveashsr Circle Track Chat 3 05-19-2004 08:12 PM
360 rear main cap crackerg Circle Track Chat 5 03-07-2001 11:17 PM




All times are GMT -4. The time now is 03:44 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .