Mildon main caps.
Thread Starter
Melting Slicks
Joined: Oct 2000
Posts: 3,010
Likes: 1
From: Sweden/Stockholm
Mildon main caps.
As some know I fishing around on whow to uppgrade my bottom end. I decided to go ARP everywhere. But what about the main caps, should I uppgrade those to mildon 2 bolt caps? Or perhaps the stock is good enough with ARP bolts? Anyone experience any trouble on high modyfied ( 400hp+ ) 2 bolt main engines?
Burning Brakes
Joined: Sep 2001
Posts: 981
Likes: 0
From: Anderson South Carolina
Re: Mildon main caps. (devilfish)
If you change main caps you will have to have the block line-bored to make sure it is true to the centerline of the block.
You might as wll go to a 4-bolt main cao conversion, the cost wouldn't be that much more.
Then your bottom end will handle anything you throw at it. You would still need to have the block line-bored but at least it would be worth the cost.
The Mildon splayed 4-bolt cap is a clean installation on an L98 or LT1 block.
vettmike
You might as wll go to a 4-bolt main cao conversion, the cost wouldn't be that much more.
Then your bottom end will handle anything you throw at it. You would still need to have the block line-bored but at least it would be worth the cost.
The Mildon splayed 4-bolt cap is a clean installation on an L98 or LT1 block.
vettmike
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
Re: Mildon main caps. (devilfish)
The 2 bolt bottom end should be good for at least 450hp. The aftermarket caps are expensive to install (i know i have callies billet splayed 4bolt main caps)because the line bore process is not done at all machine shops most shops only offer the line hone process. Unless you are going to be using it at the drag strip a whole bunch and abusing the engine its not worth it. :nonod:
[Modified by chriswtx, 8:35 PM 3/15/2004]
[Modified by chriswtx, 8:35 PM 3/15/2004]
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: Mildon main caps. (devilfish)
It's largely an RPM thing: if you're staying around 6000, stock caps, cast crank, hyd-roller cam, etc. Above that you're wanting 4-bolt billet caps, forged crank, solid roller cam, etc.
After almost fainting at the cost of fitting aftermarket caps / 4-bolt conversion, my engine builder recommended stock 2-bolt caps installed with ARP studs. And always use good rod bolts! I roadrace my vette and never had a problem, but it's only a blown 383 with 540hp...
After almost fainting at the cost of fitting aftermarket caps / 4-bolt conversion, my engine builder recommended stock 2-bolt caps installed with ARP studs. And always use good rod bolts! I roadrace my vette and never had a problem, but it's only a blown 383 with 540hp...
