Boss Block and Stock Heads

[SSGT Mustang]

Originally Posted by DRAKE VISCOME

...well know the...dilemma...went same route when doing fresh motor for our stock eliminator fox body GT...ended up just purchasing the Dart...as well...nobody ever said..."engaging" with this Ford stuff...wuz gonna' be... ez...lol...Ford Boss block was/is nice though...!!!

Thanks. I've been a Ford man for 40 years and they just seem to go out of their way to make it almost impossible for drag racers to compete. They've been doing this forever. I don't know why I still bother. I mean why do they bother offering up a great new block only to limit its use. There is NO reason to do what they did with this block other than make it easier to do their stroker crate motors. To do what they did to the water jackets is special kind of stupid. I've have G-Blocks, R-Blocks, production blocks that never had a cooling problem. I have R-452 block from a winning nascar team that has round holes for the water jackets. What does Ford do? Create a new block and screw it up with stupid design "ideas."

I'm just baffled by it.

[BRETV]

My superstock motor Kuntz did has a Boss block with stock cast iron E7TE heads. Might wanna ask them




Bret Velde
2003 SS/LA.

[Steve Stickel]

Boss Block, Iron (Explorer) GT40P's, Cometic .027 mlg , no issues

[DRAKE VISCOME]

Hey...Good news is...thank goodness a whole bunch of guys WAY smarter than I...figured it out !!!...guess I gave up too ez...just moved on to Dart...old adage true...NEVER a day goes by...can't learn sumptin' 'eh...been that way...for lots of years...lol

[SSGT Mustang]

Originally Posted by Steve Stickel

Boss Block, Iron (Explorer) GT40P's, Cometic .027 mlg , no issues

That's good to hear but I put the heads on the block and there's water jacket openings as clear as day with an E7. It's not much but its there. I cant see how it would not leak since there's no head surface to seal the gasket to the block.

Since Ford made this great idea you would think they would make some kind of expansion plug for the holes. I may make my own punch and die but Ford should have already done that.

[SSGT Mustang]

Originally Posted by BRETV

My superstock motor Kuntz did has a Boss block with stock cast iron E7TE heads. Might wanna ask them




Bret Velde
2003 SS/LA.

Thanks. I'll give them a call.

[BRETV]

Originally Posted by SSGT Mustang

Thanks. I'll give them a call.

Cometic gaskets too





Bret Velde
2003 SS/LA

[west coast]

Ok just relax i had the same thing happen to me. Filled it up on the dyno poured out i looked like idiot. Had a machine shop put cast iron rod pressed in the block to fill those holes. Cost me $600 i think but all has been good, this is a stocker with e7te heads been this way for years now lots of runs on it. In the catalog there is fine print about this didn't see this till after the fact. Have pictures on an old phone can send you. Will be a couple of weeks till i get home, racing in Arizona right now.

[SSGT Mustang]

Originally Posted by west coast

Ok just relax i had the same thing happen to me. Filled it up on the dyno poured out i looked like idiot. Had a machine shop put cast iron rod pressed in the block to fill those holes. Cost me $600 i think but all has been good, this is a stocker with e7te heads been this way for years now lots of runs on it. In the catalog there is fine print about this didn't see this till after the fact. Have pictures on an old phone can send you. Will be a couple of weeks till i get home, racing in Arizona right now.

Thanks James. I'm sure you understand my frustration over something that was totally avoidable. I read the small print and never in a million years would have guessed that the reason the block doesn't work with the heads is because of a change in the water jackets that serve no purpose. Anyway thanks and good luck in Arizona.

[FireSale]

I had access to 68 J Code heads for $100 and this undid it. Can't blame Ford, though. They make it clear in the Product listing on the Ford Performance Parts website:

"Designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads. Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads"

That block worked OK on AFR 1399 heads with gaskets made for the 6010 block. They are GT40 castings. Gaskets must be straight on the exhaust side to keep the water where it's supposed to be. I'm switching classes with n351 iron heads and double checked with Mike Delahanty first. Used to be director of Ford Short Track Racing, so he knew the head.Got an answer lickety split! Rely on your peers.

Looks OK so far.

Don't go all BowTie on us, now...

James: Good luck and have fun. Hope to see you in the combo this year - SS/CS.