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Author Topic:   400 heads
Dirt Forum Racer

Total posts: 76
posted January 02, 2003 12:53 PM
Do all 400 heads have steam holes. I was sold a "400" but the block # is a 350 (which I was told didn't matter)and the heads have no steam holes. I think I was taken.

Dirt Freak

Total posts: 353
posted January 02, 2003 01:27 PM
I hate to say it but it sounds like you got took.

As for the heads any stock production Chevy heads on a 400 would have had steam holes. You can also drill the holes in standard 350 heads or aftermarket heads for use on a 400.

As far as i know all stock production Chevy 400 blocks had steam holes. I'm not sure about aftermarket blocks like Dart and World Products....

The cast number being a 350 block is icing on the cake.

I think i would have a conversation with the seller and see what he has to say...

[This message has been edited by dirtbuster (edited January 02, 2003).]

Dirt Full Roller

Total posts: 62
posted January 02, 2003 01:30 PM
The dart heads, i think do not have steam holes, but you can drill them if needed

rico 08
Dirt Freak

Total posts: 372
posted January 02, 2003 01:59 PM
I never drill them on a race only engine they say they are for street use aka idling in traffic etc.

Dirt Newbie

Total posts: 2
posted January 07, 2003 02:37 AM
If you were wanting a 400 it sure does matter that the block is a 350. You sure didn't get a 400 cubic inch motor. 400 had a 4.125" bore and the 350 had a 4" bore. If a 400 is what was advertised here, I would ask for my money back with a wrench in my hand. For future reference, a 400 block will most often have three freeze plugs in the side of the block (a few only had 2). Look at the harmonic balancer as well. Unless someone has had it internally balanced, there will be a "notched" area in it.

Dirt Freak

Total posts: 273
posted January 07, 2003 08:19 AM
Run your hand down the side of the block. If you are able to feel the bulges for the water jackets nessecary on a 400 you're ok. If the side is flat, I'd suggest paying the guy who sold you that piece a visit!

Dirt Forum Racer

Total posts: 76
posted January 08, 2003 09:55 AM
Thanks for the help. My "friend" has moved out of state. I'll just run this thing until I can build what I want. Thanks again.

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