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View Full Version : Weight Differnce SBC vs 604 Crate


BigBlueFord
10-16-2013, 04:43 PM
What is the weight difference between a small block Chevy and a 604 crate engine?
charcoal01
10-16-2013, 05:23 PM
I think it's more or less 55 pounds
MM90
10-17-2013, 09:54 AM
http://karlperformance.com/subCategory.cfm?subCat=907&cat=13
RACEMAN
10-17-2013, 03:09 PM
Charcoal, which is heavier.

Thanks.
Confused?
10-17-2013, 04:41 PM
SBC is heavier. The 604 has aluminum heads.
powerslide
10-17-2013, 07:19 PM
It depends if you use a stock block or aftermarket, depends if the heads are darts, or maybe a vortec head. Light crank in the open motor? Too many variable to say exactly, but no doubt the crate is lighter, it has alum heads and it has the stock block.
charcoal01
10-17-2013, 11:51 PM
Yes, sbc is heavier.
MM90
10-18-2013, 03:09 PM
You can build a SBC "cast heads" lighter than a 604, but for the most part they are heavier.
mod71m
11-01-2013, 04:04 PM
The 604 weighs approximately 421 pounds as supplied from GM. You will have to weigh your engine with the same components to know the exact difference. There are options out there that are similar in weight but you still can't run a spoiler...

http://karlperformance.com/subCategory.cfm?subCat=907&cat=13
MM90
11-04-2013, 08:34 AM
Don't know if it did or not, didn't run it. But I know the 3" at the Tradition tightened the car up.