Thread: 6-71 supercharged 302 help needed

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Originally Posted by tango

Erik you would know when you break one ! The Tow bill is a good reminder There is a guy at the track with a FORD 8.8 rear end . But the COOL thing it's in a 1984 G body Monte Carlo with a SB Chevy 383 .

I have had a lot of cars over the years.
Sometimes I can't even remember what I ate yesterday.

So basically, you guys are telling me I have 1 of 2 options.

1) Spend megabucks on an aftermarket block (on top of all the cash I have to lay out for the blower and so on)

OR

2) Just give up on my idea on having a streetable 302 with a 6-71 on it.

#@%^$!!!!!! Why can't these things work out for me? Guess I'll just have to build the stupid thing up for twin turbos instead. I hate cookie-cutter engines. I just want something different that will be reliable AND melt the tires when I feel like it. Single carbed and EFI engines just aren't my thing. And I don't want to have to change my car to be able to fit a larger (351W) engine in it. No offense guys, I really do appreciate your input, but from the sounds of things, it seems like I'm trying to catch a unicorn here.

It is what it is ! Twin Turbos ? You still need the HD 302 block . You can build one of the 5.0 GT40 long blocks to make good power for a street / strip build with one carb . And yes it will Smoke the tires .

Originally Posted by V8juggernaut

So basically, you guys are telling me I have 1 of 2 options.

1) Spend megabucks on an aftermarket block (on top of all the cash I have to lay out for the blower and so on)

OR

2) Just give up on my idea on having a streetable 302 with a 6-71 on it.

#@%^$!!!!!! Why can't these things work out for me? Guess I'll just have to build the stupid thing up for twin turbos instead. I hate cookie-cutter engines. I just want something different that will be reliable AND melt the tires when I feel like it. Single carbed and EFI engines just aren't my thing. And I don't want to have to change my car to be able to fit a larger (351W) engine in it. No offense guys, I really do appreciate your input, but from the sounds of things, it seems like I'm trying to catch a unicorn here.

Its funny when you start a project you never really have any idea how much it will cost in the end. With all the stuuf you want to do with the 302, it's gonna cost you anyway. Money up front will be worth tons down the road, I'm looking at two grand just to spruce up an old 460, if I'm lucky. learn from these guys, they've been there!

I know what you mean Stovens, I have the typical hot rodder's dilemma: I want the "go", but my budget is low.

I have found a reasonably priced twin turbo setup that might be cool. But by the sounds of things, I probably won't be able to use my "stock" block for that either. I don't mind doing mods to the engine to be able to run either one of these (blower or turbos), but apparently, my block won't handle it. Guess I won't get my HP fix until I win the lottery.

Just how much are the custom blocks?

Originally Posted by stovens

Just how much are the custom blocks?

A new HD Bare block is around $2200 to $2400 Bucks . I would check your local Craigs list and E Bay for a HD block . With all them Fox Mustang 5.0 guys . There must be some good HD used blocks or even short blocks .

Originally Posted by V8juggernaut

So basically, you guys are telling me I have 1 of 2 options.

1) Spend megabucks on an aftermarket block (on top of all the cash I have to lay out for the blower and so on)

OR

2) Just give up on my idea on having a streetable 302 with a 6-71 on it.

#@%^$!!!!!! Why can't these things work out for me? Guess I'll just have to build the stupid thing up for twin turbos instead. I hate cookie-cutter engines. I just want something different that will be reliable AND melt the tires when I feel like it. Single carbed and EFI engines just aren't my thing. And I don't want to have to change my car to be able to fit a larger (351W) engine in it. No offense guys, I really do appreciate your input, but from the sounds of things, it seems like I'm trying to catch a unicorn here.

I am afraid the twin-turbo idea will cause problems also.
Don't give up yet.
Like someone else said you can always buy a used Dart/race block.
Like someone here says it is going to take longer and cost more.

YouTube - 702 hp small block Ford at only 9 psi

Originally Posted by Yellow72

YouTube - 702 hp small block Ford at only 9 psi

Yes,that is impressive.

Originally Posted by V8juggernaut

So basically, you guys are telling me I have 1 of 2 options.

1) Spend megabucks on an aftermarket block (on top of all the cash I have to lay out for the blower and so on)

OR

2) Just give up on my idea on having a streetable 302 with a 6-71 on it.

no .. just dont try to get 500 hp out of yours .. i thought you originally wanted a "show " engine ... .. you should have known this would morph into a how much you can or cant get argument

didn`t mean to put a damper on this thread .. iv`e got a picture of a blown 302 car from the 80`s that i remember but i cant post it .. this place gets aggravating sometimes .. well maybe later then

Hey V8
here is a link to ebay where they sell the 302 Dart block for 1995.00 with free shipping to buisness address or address with loading dock. Otherwise 69.00 more. I'll keep looking localy for a used one and post if I find one for you. eBay Motors: Dart small block Ford SBF Sportsman 302 block 31354175 (item 110199802248 end time Feb-25-08 15:47:10 PST)
They are expensive! But I bet it will last a life time!

Do not be scared of a repaired or sleeved block in one of these aftermarkett blocks ,people get scared when they see sleeve and the price is usually pretty low,if the sleeve was installed correctly it is just as good as new.

Even if it needs machine work and repair,at around 600 to 1000 dollars these make good deals,especially since the power exspectations are not the main concern,you could do 500 or soo in a repaired block and not even stress it at all.
Racing junk has some used stuff on there .......

I had a World Man-o-War 347 short block built for my 289 Cobra after I spun a bearing in the original bored over 289 "K" code, @ 325 bhp on a dyno at 5800 rpm. The #4 piston had scored the wall so bad that it would have needed to, ideally, been re-bored but since it was at near wall limits sleeveing would've been the only other option. I opted to bite the bullet and got the 347 about $5.5 k including shipping---ouch!
I salvaged the heads and intake and other misc., I was running Weber 48 IDA stack induction, 4-2bbl carbs., from the old engine. When we got the engine finished we did a dyno break-in, then ran the engine on 3 dyno tests, it was putting out an average 358bhp @ 5800 rpm, redline was estimated at aprox 6400 rpm --although the shop owner and mechanic that helped me with the build felt that the engine would be very capable of running a 7200 redline with no problem.
I researched and checked the Dart blocks, et al. and for durability and performance I think the Man-o-War hd blocks are the best value for money spent and properly built deliver awesome performance.
I do know that though the original "K" code engine was quite a performer it was like night and day in performance comparison. MY lil' pos really started to scream after it's transplant and I could give the BB Ford guys a run for the money.
Horsepower and performance costs money, no two ways about it, and until recently, if you were Running the Blue Oval you were paying premium price for performance compared with a Chevrolet.