[ENGINE BLOCK]: Need help guys.
Thread Starter
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
[ENGINE BLOCK]: Need help guys.
I am trying to track down a good useable block for my dad '67 Resto project.
The main issue here is that it has to be from the '67 era as he has a whole bunch of hi-perf parts I guess that only fit that era block. I forget what it is called, Mark III or something along those lines? You would all know better than I. :yesnod:
In the end the engine will be either a 427 or 454. I am not an engine guru when it comes down to bore/stroke etc etc.... but aren't those the same blocks and the 454 just has more stroke to it? What about a 396, is that the same also with less bore/stroke than a 427? I have found this...
...I could care less what is inside of it and if it needs a rebuild. It just has to be the correct era block and clean. The innards will be trashed anyways. He really wants a 4-bolt main.... but 2-bolt seems to be the only thing I can ever find. How much difference in strength did these blocks have during that time? I know some of the tuners of engines in my C4 era actually prefer some of the 2-bolt blocks for different reasons.
Thanks in a advance!!!
The main issue here is that it has to be from the '67 era as he has a whole bunch of hi-perf parts I guess that only fit that era block. I forget what it is called, Mark III or something along those lines? You would all know better than I. :yesnod:
In the end the engine will be either a 427 or 454. I am not an engine guru when it comes down to bore/stroke etc etc.... but aren't those the same blocks and the 454 just has more stroke to it? What about a 396, is that the same also with less bore/stroke than a 427? I have found this...
BIG BLOCK CHEVY ENGS. 1966 2-bolt 396, bored .060, domed pistons, nice rods & steel crank, closed chamber heads, no intake. Nds a rebuild. $375; 1969 2-bolt 396, std bore, closed chamber heads, 8 hvy duty truck rods. $250; Call aft 4PM. (Wakefield) xxx-xxx-xxxx s
...I could care less what is inside of it and if it needs a rebuild. It just has to be the correct era block and clean. The innards will be trashed anyways. He really wants a 4-bolt main.... but 2-bolt seems to be the only thing I can ever find. How much difference in strength did these blocks have during that time? I know some of the tuners of engines in my C4 era actually prefer some of the 2-bolt blocks for different reasons.
Thanks in a advance!!!
Thread Starter
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: [ENGINE BLOCK]: Need help guys. (scorp508)
Also...
Think that one sleeved cylinder would be something to stay away from?? That one is a 4-bolt. :yesnod:
CHEVY BIG BLOCK PARTS. 454 block, 4 bolt mains, 30 over. 1 cyl has a sleeve. 10/10 steel crank. 7/16 rods. Take all for $500; Call Paul 5-9PM. (Weymouth) xxx-xxx-xxxx t
Think that one sleeved cylinder would be something to stay away from?? That one is a 4-bolt. :yesnod:
Le Mans Master
Joined: Nov 2000
Posts: 7,246
Likes: 21
From: Going too fast over the hill. Iowa
Re: [ENGINE BLOCK]: Need help guys. (scorp508)
To my knowlege, there is no difference in block strength between 2 and 4 bolt Corvette BBs. They started life as the same castings with the same casting numbers. It was common to see a 2 bolt block get drilled for 4 bolt main caps or cradles in racing use. SB engines have strength differences based in metal content noted on the front of the block (under the cam sprocket).
For a 67 you want a 427 with a 3904351 casting number (unless it is a very early or very late car). To make a 2 bolt main engine "look" like a 4 bolt main engine, all you need to do is drill and tap the external oil cooler boss on the side of the block.
If you go 454 - I believe you will also need a flywheel to balance the engine. With the cost of rebuilding, you will be money ahead to start with a 67 block.
For a 67 you want a 427 with a 3904351 casting number (unless it is a very early or very late car). To make a 2 bolt main engine "look" like a 4 bolt main engine, all you need to do is drill and tap the external oil cooler boss on the side of the block.
If you go 454 - I believe you will also need a flywheel to balance the engine. With the cost of rebuilding, you will be money ahead to start with a 67 block.
