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From: Heaven, for the climate; Hell, for the company
Check the Aug 18 2005 on-line issue of Motor Trend. Has pretty good article about short block history.
I understand the short block was developed partly to allow for increased power, and variety of configurations, in an engine that was literally "short" and would fit into a low-cowl car.
That's why I said 'et al' after the listings; there were more.
Also, the 348/409 were a totally different family that came from the Chevy/GMC truck line. In the day, we referred to them as the E-block, because of the shape of the block at the deck (it looked like an 'E').
I'm pretty sure the Mopar 360 was a big block, but I'd never stake my life on it. You could be right....
I believe Chevy called it the W block. the top of the blockwas milled at less than 90° to the cylinder wall to form a combustion chamber waithin the formed V of the angle mill job and the top of the piston. Fine torque engine for trucks but hindered breathing for Nascar.
Most people have no idea what small block / big block means, and people will immediately refer to any relatively large cubic inch engine as "big block" even though they have no clue about what they're saying. I point this out because when I used to buy and sell musclecars years ago, I really got tired of every clown on the planet telling me over the phone that they had a "big block", and then I'd show up and it was NOT a big block... can be very annoying.
Sorta. There was a deck height difference on some versions of the 351, but it was basically the small block. The 352 was the big block. (There was also a 332 big block.)
And don't forget 351C (Cleveland) versus 351 M(Modified) versus 351 W (Windsor).... I had 351M...
Oh, and I had a truck with a 292 "Y" block....
It seems we are going to make 'bigblock/small block' discussion clear as mud...
Last edited by self1; Aug 18, 2005 at 05:48 PM.
Reason: speeeeling, again
Good answer. There is a LOT of meat in a big block. Physically much larger and heavier - translating to stiffer - making the block able to withstand the explosions and run cooler - more surface area to transfer heat to water.
It is really a tribute to engineering that GM has made a large displacement small block from modern, lightweight materials. They have solved some significant flex and cooling issues in order to produce this engine when you consider the warrantee and legal implications of an overstressed engine system. The are essentially saying that they can build a big displacement, lightweight engine with sufficient capabilities to meet long term reliability and safety concerns. The Europeans will hate us.