69 302 Boss block

[TOM B]

OK, I took apart my supercharged 347 last week and found some deep scatches in the cylinder bores, dont know what happend yet as I didnt take the pistons out yet, block is 030 over now. Edelbrock RPM heads look real good.
I have a 302 Boss block in the basement and am thinking of using it, dont have $2000 for a new block, What do you guys think.
P.S. Im 47 now and probably not going to find a 302 boss car to put it in.

 

[grego37]

I'd pull it apart, and if the pistons are still usable, find a std bore factory 289-302 block and bore it .030 re-assemble with new rings, bearings.

I wouldnt waste the b302 block. you could sell the b302 block to fund this entire project, or save it for a rainy day.

if you feel a stock block wouldnt be strong enough, then maybe sacrafice the b302 block.
just my opinion

 

[PJx5x]

i wouldnt use the boss block either. find out what happened on the other one, and put it all in a stock roller 302 block

 

[TOM B]

Well thats a thought. Would all the components of my 1970 block fit a new 5.0 block, I can buy one fom summit for 500 bucks. I have a 5.0 roller cam in my engine now with cranes cams special roller lifter as they probably wont fit the new 5.0

 

[Max Power]

Yup, things like heads and intakes will switch over.

Sell the Boss block to someone restoring a Boss. You will be paid handsomely and it is your Mustang civic duty!

 

[PJx5x]

Well thats a thought. Would all the components of my 1970 block fit a new 5.0 block, I can buy one fom summit for 500 bucks. I have a 5.0 roller cam in my engine now with cranes cams special roller lifter as they probably wont fit the new 5.0

dont spend $500 on a stock block. pick one up locally for like $50. then just get some 5.0 lifters

 

[69gmachine]

You may not find a real boss for a reasonable price, but maybe you could throw the new aluminum Cleveland 2V heads on it and make a Boss clone that has better driveability and weighs less to boot?

I always go the long way wherever I'm going

 

[Fourdman]

You only live once man.

rape and pilage that thing.

 

[bnickel]

a buddy of mine is restoring a 69 boss 302 that he bought minus engine/trans. if you're interested in selling it let me know, i'm sure he'd be interested in buying it if it's reasonable.

 

[10secgoal]

How deep are they ? Or are they just scuffs ? I'd say keep it if it wasn't burning oil, and ran good. Unless they are really deep. All of my cylinders had scuff marks. I run a hone thru it again real quick and re-ring it. I did that 2 times after the rebuild. It's not perefect, but it's cheap and it works.

 

[TOM B]

One of the scatches is about .010 deep, like a ring busted or some sirius dirt.
Its 030 over now and if I have it bored more then I have to buy new pistons and rings, I dont know how far It can be bored. No it dont smoke and didnt loose any compression but it does worry me.
The Boss block might go up for sale along with the heads, crank, manifold, or maybe i will put it together then sell it and buy a Ford aluminum block

 

[Eyeless_Seven]

Use the boss block, you can't beat the 4 bolt main caps. Carrillo rods are cheap on ebay, the only thing that might be hard to find is the original intake or the clevor one.

 

[TOM B]

got the intake to but wont need it because im running a Holley commander 950 fuel injection with the blower

 

[A67StangMaster]

HEy You can have my 302 block Lets trade I just rebuilt it, std bore..??


Lol Just a try...

 

[Eyeless_Seven]

got the intake to but wont need it because im running a Holley commander 950 fuel injection with the blower

Go for it, use the boss block. Best ford block ever made and the only small block, ford made with 4 bolt main's. My ex-father in law pointed out that they did have an issue with the original piston skirts cracking. and reccomend's you use block filler for extra strenght on the bottom 2 inches of the block.

 

[10secgoal]

Go for it, use the boss block. Best ford block ever made and the only small block, ford made with 4 bolt main's. My ex-father in law pointed out that they did have an issue with the original piston skirts cracking. and reccomend's you use block filler for extra strenght on the bottom 2 inches of the block.

I've heard that and even though the blocks don't plit, the decks fail. So I passed on one about 4 months ago for 300 bucks.

 

[Sicarius428]

I say either use the boss block or sell it. There is no point in building up a 5.0 HO motor that will barely hold 450HP and by the sounds of it probably closer to 500.... Anyways the old school boss block would be great to build up but point taken might be more suited for a resto. Ford I think just released or is soon releasing a new boss block which is stronger than the old school one which would make a nice foundation. I just think either use the block because it sounds like your rainy day has come or sell it to recoupe some funds to do it right.
Kevin

 

[180 Out]

Use the boss block, you can't beat the 4 bolt main caps. Carrillo rods are cheap on ebay, the only thing that might be hard to find is the original intake or the clevor one.

Good news: Edelbrock is coming out with Clevor intakes sometime in '07. There's a link to an '07 products preview pdf on the ebok home page, which includes a blurb about the Clevor intakes but no pix. The plan is one model for the 8.2" block and one for the 9.5". They'll have the coolant crossover with the Windsor style thermostat housing, so all you have to do is drill the heads in the right places. http://www.darkhorseracing.net/clevor_head_mod.htm http://www.darkhorseracing.net/track_boss_me_2005.htm Should be a lot cheaper -- and easier to find -- than the CHI's, Parker Funnelwebs, and Track Bosses.

 

[Eyeless_Seven]

I've heard that and even though the blocks don't plit, the decks fail. So I passed on one about 4 months ago for 300 bucks.

Heck, see if it is still available I will give you 400.00 and pay for the shipping and crating. Make sure it has 4 bolt main caps and screw in freeze plugs.

 

[65ShelbyClone]

GMy ex-father in law pointed out that they did have an issue with the original piston skirts cracking. and reccomend's you use block filler for extra strenght on the bottom 2 inches of the block.

That was a lack of ribbing is in the piston, not a block issue. Clevelands are the ones that need block filler; like a 427FE, you're doing well to get an .030" overbore. After that a ballooned cylinder is the big "what if."


I'd feel bad using up a Boss 302 block to patch up a wounded 347. It's possible the block would clean up with an .040" overbore. If not, 302s, both flat and roller, are usually easy to find no matter where you look and cheap to boot. Like most Ford blocks, the earlier ones are usually stronger. I'd rather have the new $1700 Boss 302 block anyway.