454mag rebuild in progress
02-03-2005 | 08:43 AM
#1
Thread Starter
JC Performance Engines
Joined: Jul 2002
Posts: 8,904
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From: Long Island, NY
454mag rebuild in progress
Alright, well I've got enough to start posting pics of the rebuild.
Jeff from JC Performance is doing the work.
The block is original mark IV, bored 30 over and decked.
It needs a bit more sanding at the cylinder openings, otherwise ready to go.
Jeff from JC Performance is doing the work.
The block is original mark IV, bored 30 over and decked.
It needs a bit more sanding at the cylinder openings, otherwise ready to go.
Last edited by Stormrider; 02-03-2005 at 08:48 AM.
02-03-2005 | 08:49 AM
#4
Thread Starter
JC Performance Engines
Joined: Jul 2002
Posts: 8,904
Likes: 33
From: Long Island, NY
Re: 454mag rebuild in progress
Pistons are new & shaved. Connecting rods are original, but redone and cleaned up, new ARP bolts.
Last edited by Stormrider; 02-03-2005 at 09:03 AM.
02-03-2005 | 09:32 AM
#7
Thread Starter
JC Performance Engines
Joined: Jul 2002
Posts: 8,904
Likes: 33
From: Long Island, NY
Re: 454mag rebuild in progress
This is for my 1995 Pantera 24SE.
Everything besides the block, conn. rods and crank will be new.
Will be putting a hotter cam in, 850holley carb, new intake, stainless marine exhaust. Expecting around 550hp. This will be dynoed.
Hopefully Jeff will chime in to answer these questions better.
Everything besides the block, conn. rods and crank will be new.
Will be putting a hotter cam in, 850holley carb, new intake, stainless marine exhaust. Expecting around 550hp. This will be dynoed.
Hopefully Jeff will chime in to answer these questions better.
02-03-2005 | 09:37 AM
#8
Thread Starter
JC Performance Engines
Joined: Jul 2002
Posts: 8,904
Likes: 33
From: Long Island, NY
Re: 454mag rebuild in progress
These are the 308s, and compression should be around 9.3.
Had to replace my oringinal large rectangular ports since one was shot, so Jeff suggested these. And I know the originals are too big for marine use.
Had to replace my oringinal large rectangular ports since one was shot, so Jeff suggested these. And I know the originals are too big for marine use.
02-03-2005 | 10:04 AM
#10
Thread Starter
JC Performance Engines
Joined: Jul 2002
Posts: 8,904
Likes: 33
From: Long Island, NY
Re: 454mag rebuild in progress
Originally Posted by carm
what drive do you have and what is your dimension from the prop shaft to the pad?
I currently have a bravo one, but I'm thinking of changing to an XR upper.
