[70L34]

Hi folks,

I am sure this is a 'duh' question but I'd like to know whether an early timing cover will bolt to a 1970 455 block. Trying to make a 455 look like a stock 360hp '67 400. Any other tips would be great. Thanks!

[ponyakr]

Yeah, they'll bolt up. There's even a '74 455 that has a YR code, like one of the '67 360hp 400's.

Of course, if anybody looks at the casting number, date code, or cubic inch cast on the sides of the block, they'd see it wasn't a '67 400. But, I suppose you could grind all these numbers off, and/or make 'em un-readable. And, I assume you know that the 455's have 5 motor mount bolt holes, and the '67 engines had only 2.

Of course, I'm sure you know that you can just build a stroker using an original '67 400, or at least use a 400 block from another year, which has a code used on one of the 360hp '67 400's. That way the code and side numbers would look correct. And, if you run the '67 670 heads, you'll need dish pistons, for pump gas use. A '67 iron intake, and a '67-'68 Pontiac Q-jet, with a round tag, would help it LOOK more original. I suppose you could fool some people, who don't know much about Pontiacs.

http://www.wallaceracing.com/enginesearch4.htm

[70L34]

Thanks! Yeah, you're exactly right, just looking to preserve the look (correct timing cover / water pump / accessory drive / intake / carb) but I'm not going too crazy grinding off the 6x head casting IDs and worrying about the motor mount bosses.

Appreciate the help!

[bendutro]

I have a nice 8-bolt timing cover for sale if you're interested.

[GT182]

I've been told there's less problems with the 69 and up 11 bold timing cover. With that I mean the water pump. My 68 400 block is still the 8 bolt but one of these days I' going to convert it to the 11 bolt timing cover and pump. It'll cool better with less problems because of the impeller on the pump.

You will need the correct divider plates and impeller for the 8 bolt. Read thru this thread. At about Page 22 it gets interesting.

http://forums.maxperformanceinc.com/...d.php?t=411256