300 Block Choices

[Anonymous]

I’m planning to take my time and build a 300 six for a drag race only car. Is there a preferable block to start with? Are there any blocks with a higher nickel content, or thicker cylinder walls etc. Block fill will be considered. I’m planning on aluminum cross flow heads, with a roots style blower. Any suggestions on the block? Wasn't there a 76 "heavy duty" 300 used in light Ford trucks. It supposed to have a steel crank, is that right?

Thanks
Mark

 

[Asa]

from what i remember of past discussions, there are no better blocks as with the SBF family
so you should be alright with any block

as for the steel crank, yes there were some 300HD models, it might be good to have one, but as long as you prep the crank correctly i don't think you'll need it

 

[StrangeRanger]

There were a handful of SVO blocks made but never catalogued. One of the board members has one. Good luck on finding its twin. It has thicker bearing webs and possibly thicker cyl walls 9not sure about that one.)

By aluminum crossflow head, do you mean the Alan Johnson head?
Bring money, lots of it.

 

[Anonymous]

Those Alan Johnson heads will blow my budget. I want to either build a set of heads like "6banger bill" did or see if will sell one.

Mark

 

[xctasy]

Any block will do. The side plate engines seam to be amazingly strong, especially with over 10 inches of prime Lake Michigan/Cleveland iron in there.

As for heads, grab three 351M or 400 Ford heads, and do some welding. The extra 105 thou gap between each cylinder is easily taken care of by placing the heads in three sections and then welding. (4.48" verses 4.375"). The studs can be repositioned using old Cummings or Catipilar Diesel valve guides to fit the 7/16 bolts.


http://img.photobucket.com/albums/v223/xecute/SlyOneTbucket.jpg

 

[82F100]

Xecute, awesome shot of the altered.Do you have anymore pics of the car?

 

[xctasy]

Yup. Care of STEVEN. American magazine on an American sedan and truck engine goes half way around the world, gets scanned, and sent back to Middle America, at the hands of a kiwi.

Some details in the article were wrong, but the magnitude of the bore spacing error was slight

(they said 4.28 for the SBF, its 4.375. They said 4.38 for the 300. It's 4.48").302 Boss head is basically a 302C/351C/351M or 400 head, although there were a lot of different chamber and port combinations.

You'll have to save it to your computer, and view with Explorer (Exploder?) to read it properly.

I had given my scanner a few drinks before it got to work on this one!

 

[Thad]

Welded SBF heads ---- drill and tap block for 1/2 studs, then off set drill holes in head to match.

 

[82F100]

THANKS!

 

[82F100]

As for the blocks I've read that if it's a serious motor to have the block sonic checked.But FTF could probably give you some good tips about block prep.