426 Crate Hemi Rebuild

[Tony K.]

Hi looking for suggestions on what to improve upon during my rebuild.


Car 1966 Belvedere II

A833 4 speed

Dana 60 3:54 gears

2 each edelbrock 1405/1406 carbs

Stock exhaust manifolds


Car is not a original Hemi, main purpose will be the street.


The motor broke a piston ring on #2 cylinder, this appears to be one of the Mopar crate motors circa 2000's.


Any other known defects I should be looking into during this rebuild?

 

[super-bee_ski]

I was aware of some issues from that "Batch" of blocks
From the "Winter's Foundry" blocks OR the Cummins foundry?
Something about oiling passages were full of debris, allegedly the Cummins cast/built motors were known to have casting sand retention issues, along with suspect weak webbing?

I DO believe the issues have been resolved.

 

[super-bee_ski]

So:
The "original" style manifold manifold has heated tubes from exhaust manifolds to the BACK of the intake manifold.
Are you going that route?
Are you sure you do not want Headers?
I have the TTIs on my 70 Bee with the 426 hemi


Also: if you do NOT have a original Hemi K-member, you will have to use a substitute method of attaching the Hemi to the B-body K-member
I used the Schumacher Hemi conversion motor mounts...
They "lift" the engine up a little higher, but it works! (Solid Motor Mounts)

http://www.google.com/url?sa=t&rct=...e-swaps.com/&usg=AOvVaw2-jpOzkXOXJB1vJxIXuRLj

 

[mmissile]

Rebuild it, as you would any new engine. I've been in your situation a couple times. They had various issues. I bought wounded ones, cheap....then built them for my applications.

 

[Challenger340]

The Mopar HEMI Crates were always a great "Box of Parts" for the money, Block/Crank/Rods/Heads/etc., etc., but with the actual running characteristics/problems as assembled & delivered varying by where they were from by the time frame.
IMO, NONE of them were anywhere near potential as delivered, just the better ones ran "adequately" compared with those that didn't.

Get it into a real shop with Mopar experience/reputation and go from there.
The 528's can deliver a solid 625+ hp / 650 Trq on 91 Octane using Flat Tappet Hydraulics through the Cast Iron Exh Manifolds and factory Air Cleaner, which works very nicely in one of our customer's '69 RR 4 spd 3.54:1 pretty much the same as your combo.