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BBF Engine Block That can handle 4.65-4.7 Bore

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Post  4speed390 June 29th 2022, 4:34 pm

Hey Everyone,

Well I am pretty much looking for exactly what the title asks...which engine block options do I have that can usually handle a 4.65-4.7" bore? I would prefer to stay at 4.9BS

Thanks,
Jim

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Post  rmcomprandy June 29th 2022, 7:18 pm

4speed390 wrote:Hey Everyone,

Well I am pretty much looking for exactly what the title asks...which engine block options do I have that can usually handle a 4.65-4.7" bore?  I would prefer to stay at 4.9BS

Thanks,
Jim

There are a few but, actually getting one these days is almost impossible, unless you are really lucky.

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Post  4speed390 June 29th 2022, 8:17 pm

rmcomprandy wrote:
4speed390 wrote:Hey Everyone,

Well I am pretty much looking for exactly what the title asks...which engine block options do I have that can usually handle a 4.65-4.7" bore?  I would prefer to stay at 4.9BS

Thanks,
Jim

There are a few but, actually getting one these days is almost impossible, unless you are really lucky.

I am guessing that you are talking about the eliminator block? Or something from C&C?

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Post  hbstang June 29th 2022, 10:10 pm

most likley it would be the eliminator block only.why would you need that big of bore?the 10.320 block will take a 4.750 stroke and that would be a 638 with a 4.625 bore
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Post  4speed390 June 29th 2022, 11:05 pm

hbstang wrote:most likley it would be the eliminator block only.why would you need that big of bore?the 10.320 block will take a 4.750 stroke and that would be a 638 with a 4.625 bore
I want to run a small stroke, big bore engine...it's a combo I have always wanted to do.

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Post  hbstang June 30th 2022, 10:50 am

4speed390 wrote:
hbstang wrote:most likley it would be the eliminator block only.why would you need that big of bore?the 10.320 block will take a 4.750 stroke and that would be a 638 with a 4.625 bore
I want to run a small stroke, big bore engine...it's a combo I have always wanted to do.

thats like the ford 500 pro stock block.i think its a 9.2 deck,and they show up once in a while.thats an a500 block,i have seen them advertised for saleand they should go to 4.700 bore.there was some on facebook a while back.
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Post  litshoot July 1st 2022, 3:06 pm

While it may catch some heat. i bought a used a460 built and running as a 624. 4.7 pistons and 4.5 stroke. needs some careful machining, but is possible. realistically though premier is spec'd to 4.7 or an aftermarket aluminum that's made for it. most things are hard to find at this time.

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Post  BBFTorino July 3rd 2022, 9:53 pm

I seen a guy on FB 385 series Ford forum who is making aluminum blocks out of solid billet, and they have machined out coolant passages too!
I think he made about 5 or 6 already, but they are not cheap....about $13,500.
I would have no problem paying that either, if I was in that realm of engine extremes!

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Post  dfree383 July 4th 2022, 2:30 pm

Call C&C and Eliminator see what they can do for you.

Derick Timmer is another source for Billet stuff, but they are not cheap.
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Post  Curt July 4th 2022, 2:46 pm

I'd try Chris Holbrook also. He has made some big engines. I know he built a billet big block years ago.
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Post  Lem Evans July 5th 2022, 6:27 pm

The best A460 blocks are good for 4.650". Very much a minority that will get there. Most 4.600-4.625".

Eliminator or not....better sonic check those deals if you are going past 4.650". Not all are good for 4.675-4.700"

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Post  4speed390 July 6th 2022, 3:05 pm

Thanks All for the replies...also has anyone decked a 10.32 block down to 9.8 or something close to it?

one other thing for the older guys...i came across a C460 BLOCK...which has a 9.75" (i think) deck height...has anyone used one of them before?

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Post  rmcomprandy July 6th 2022, 4:49 pm

4speed390 wrote:Thanks All for the replies...also has anyone decked a 10.32 block down to 9.8 or something close to it?  

one other thing for the older guys...i came across a C460 BLOCK...which has a 9.75" (i think) deck height...has anyone used one of them before?

You can safely deck it to until the upper bell housing holes start to show threads.

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Post  dfree383 July 7th 2022, 4:37 pm

4speed390 wrote:Thanks All for the replies...also has anyone decked a 10.32 block down to 9.8 or something close to it?  

one other thing for the older guys...i came across a C460 BLOCK...which has a 9.75" (i think) deck height...has anyone used one of them before?

If your needing that, best to look for an old pro stock block. A500 stuff
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Post  4speed390 September 2nd 2022, 9:00 pm

Does anyone know where, or of anyone else, who might be willing to part with some old Ford Pro Stock Blocks and parts?

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Post  rmcomprandy September 3rd 2022, 10:48 am

4speed390 wrote:Does anyone know where, or of anyone else, who might be willing to part with some old Ford Pro Stock Blocks and parts?

Charley Wescott might have some stuff he is willing to part with.

He was running the last of the Ford Pro Stock cars.

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Post  hbstang September 5th 2022, 12:44 pm

be helpfull if you were to tell what you are building?

a lot of changes from other blocks.also heres a crank you may want.maybe they know where other parts are.
https://www.facebook.com/marketplace/item/292918149618798/?referral_code=undefined


BBF Engine Block That can handle 4.65-4.7 Bore Fordin10
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Post  supervel45 September 5th 2022, 5:31 pm

.


Last edited by supervel45 on September 6th 2022, 1:03 am; edited 1 time in total

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Post  supervel45 September 5th 2022, 7:26 pm

So how short of a stroke were you planning on running?

I was looking around when all the A500 and old Pro Stock stuff came up and found an old thread you started on the Bastard heads.

I think you are right when you said a sticky should be made of it. It was a great thread about some of the BBF racing evolution on cylinder heads.

As for as the A500 and C460 blocks it seems like extremely slim pickins on that stuff on the web.


https://www.460ford.com/threads/anyone-running-the-bastard-pro-stock-heads.113794/


Anyways like Lem said about the big bores, " Sonic Test " before you bore. Or buy used. That story Alky Pinto had on the Premier Block with water jackets between the cylinders was something else. I am not going to link it as it looked like a very isolated deal and was all made good. My main point was with new after market blocks so hard to get is be careful, as the second one did not want to go to 4.650 either and it was siamese with no water between the bores. The third one was OK. Kina sounds like the 390 to 428 deal.




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Post  4speed390 September 28th 2022, 11:31 pm

supervel45 wrote:So how short of a stroke were you planning on running?

I was looking around when all the A500 and old Pro Stock stuff came up and found an old thread you started on the Bastard heads.

I think you are right when you said a sticky should be made of it. It was a great thread about some of the BBF racing evolution on cylinder heads.

As for as the A500 and C460 blocks it seems like extremely slim pickins on that stuff on the web.


https://www.460ford.com/threads/anyone-running-the-bastard-pro-stock-heads.113794/


Anyways like Lem said about the big bores, " Sonic Test " before you bore. Or buy used. That story Alky Pinto had on the Premier Block with water jackets between the cylinders was something else. I am not going to link it as it looked like a very isolated deal and was all made good. My main point was with new after market blocks so hard to get is be careful, as the second one did not want to go to 4.650 either and it was siamese with no water between the bores. The third one was OK. Kina sounds like the 390 to 428 deal.




Well I would say that I am going to have to go EX-Pro Stock...the size and C.I. I want, plus the HP I am looking for it will be just as difficult, I think, to make it with "normal" Aftermarket items. Plus right now, it seems like it is easier to get pro stock equipment then an aftermarket BBF engine.

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Post  hbstang September 28th 2022, 11:50 pm

keep us updated on how its going with this. Very Happy
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