Machine block work II
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 891
Likes: 243
From: Green Valley Ca
Machine block work II
Max performance with stock apperance 70 L46. I made my mind up to rebuild the # matching block. Disassemble the short block this weekend and take it to the machine shop. If their no issuses, then rebuild with all new quality parts(crank,rods and pistons) and balance,blueprint.
Bob
Bob
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
assume 70 L46 350ci motor has OE heads w/ comb chamber volume that's very close to 64cc. it's stated owner wants new crank, rods & pistons AND balancing included in this rebuild.
Based on that:
build a 383 with dished (aka reverse dome) pistons.
Based on that:
build a 383 with dished (aka reverse dome) pistons.
Drifting
Joined: Dec 1999
Posts: 1,462
Likes: 0
From: Reno nevada
Max performance with stock apperance 70 L46. I made my mind up to rebuild the # matching block. Disassemble the short block this weekend and take it to the machine shop. If their no issuses, then rebuild with all new quality parts(crank,rods and pistons) and balance,blueprint.
Bob
Bob
even with modded double hump heads like I have you're probably limited to 400 or less HP with cast iron exhaust manifolds
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Max performance with stock apperance 70 L46. I made my mind up to rebuild the # matching block. Disassemble the short block this weekend and take it to the machine shop. If their no issuses, then rebuild with all new quality parts(crank,rods and pistons) and balance,blueprint.
Bob
Bob
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 891
Likes: 243
From: Green Valley Ca
The cylinder heads (#186) minor pocket porting and CC'd. Intake GM performance cast iron version of the LT-1. 2.5" iron manifolds. I want to keep a stock apperance, I'll retain L46 cam, keep the compression at 10.25:1 I though of buying new crank ,rods,pistons (lighter and stronger) pistons and rods I have to buy anyway. Machine work not to sure, tell the machine shop has inspected the block. My idea of blueprinting to check and measure and correct accordingly with in reason. I know that the HP will be limited thats fine for my car. I'm throwing this out their to get feedback to help me make decision's when the time comes for the rebuild and machine work.
Bob
Bob
