crate motors

[brandonbomber]

Guys i'm needing info. I currently run a limited latemodel, and run a race 400 sbc. I am looking into the crate motors (602 604). The questions i have are
Do these motors need a special flywheel, headers, waterpump, carb? When purchasing these motors new, these are the idems needed. Will my accessories work on the crate motor? Any info would be greatly appreciated.

[dd38]

You definitely need a flywheel. The bolt pattern is different and they are not zero balanced. They are externally balanced to the engine because they went to a 1 piece rear main seal thus eliminating the counter weight made on to the standard crank. I have heard but not seen that the exhaust ports do not align very good with headers not made for a crate engine. They are supposedly covering a little of the port. I know something is different because if you run headers they don't fit back into the chassis like they did with a regular S.B.C. head. I believe the ports are a little higher (might be lower). Nothing i've seen a good size hammer won't fix! 602 doesn't come with a intake (603/604 do) so you will need one for a 602 (bolt pattern(12 vs 8 none in the center and the corner ones go straight down like a FOOORRRDDD!!!). Everything else should work. Just watch your carb jetting. Hope this helps.

[EJC Engines]

Headers and flywheel is diffent that is it I got it in my car

[justinr20]

602

602 do come with intakes.

[dd38]

Seen them both ways.

[brandonbomber]

Thanx for the info

[luke81]

Last one I seen picked up just 2 weeks ago did not have a intake. It was in a G.M. shipping box. Maybe it's an option to go either way.

A 602 crate comes with an intake, and 2 of the seal bolts are ones that hold the intake on.

[dd38]

Oh well, me bad! but that's what I saw.