5.0" bore spacing BBC on street ? - Yellow Bullet Forums

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Old 01-02-2012, 03:56 PM   #1
etjones
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Default 5.0" bore spacing BBC on street ?

Has anyone out there built or tried to run a low compression big inch bore (5.0) BBC on the street. I am looking for a New engine for something like Drag Week. I was thinking of a 700" plus , 11.00 to 1 comp. Sonny Lenord BBC. Just dont know if it is very drivable on the street or for any distance. Anyone running anything like this, please inform me. Thanks
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Old 01-02-2012, 07:04 PM   #2
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Default Re: 5.0" bore spacing BBC on street ?

Working on one.Hope it works
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Old 01-02-2012, 07:08 PM   #3
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Default Re: 5.0" bore spacing BBC on street ?

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Originally Posted by etjones View Post
Has anyone out there built or tried to run a low compression big inch bore (5.0) BBC on the street. I am looking for a New engine for something like Drag Week. I was thinking of a 700" plus , 11.00 to 1 comp. Sonny Lenord BBC. Just dont know if it is very drivable on the street or for any distance. Anyone running anything like this, please inform me. Thanks
Dont know of many 5.0 bore space BBC's driving on the street.
Have you talked w Sonny about your intentions? I suppose if the cooling system is up to par it can be done. Dry or Wet Block?
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Old 01-02-2012, 09:24 PM   #4
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Default Re: 5.0" bore spacing BBC on street ?

I think the Willy's from Drag Week 2010 had a 5.0 bore space NOS set up in it. I don't know what happened to it, or how fast it ran.
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Old 01-02-2012, 09:27 PM   #5
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Default Re: 5.0" bore spacing BBC on street ?

why wouldnt it work ? if everything is put together right , has proper cooling it should last ? remember back in the day when they had big 500+ inch gas motors in tractor trailers ? ....i think the only way it wouldnt work is improper clearances , and cheap parts ... but heck id bet cheap parts would work as long as its assembled right
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Old 01-02-2012, 09:34 PM   #6
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Default Re: 5.0" bore spacing BBC on street ?

If the cooling is the same in the block it should work the same
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Old 01-02-2012, 09:36 PM   #7
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Default Re: 5.0" bore spacing BBC on street ?

No reason it would not same design just more meat between the cylinders. Sonny's builds them for the street.
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Old 01-02-2012, 10:07 PM   #8
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Default Re: 5.0" bore spacing BBC on street ?

and marine apps too
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Old 01-02-2012, 10:09 PM   #9
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Default Re: 5.0" bore spacing BBC on street ?

Proper cooling and clearances set right, no problems.
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Old 01-02-2012, 10:12 PM   #10
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Default Re: 5.0" bore spacing BBC on street ?

I wonder in one of the Schubeck engines would hold up through Drag Week?
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Old 01-02-2012, 10:19 PM   #11
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Default Re: 5.0" bore spacing BBC on street ?

I remember when Pat Musi used to zip tie a nitrous plate to the dry sump tank and spray it to drop oil temps on the street cruises.
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Old 01-03-2012, 11:49 PM   #12
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Default Re: 5.0" bore spacing BBC on street ?

OK - did alittle looking today. Here is what I am thinking , 706" BBC , 11.1 deck block, 5.3 crank, 4.600 bore with 11to1 comp.,7.250 rod ( not real sure on camshaft) RFD spread port NOS heads, tunnel ram intake & 2 dom. carbs. Thinking of 1 fogger kit & a pair of plates. Just wanting to know if that can make some street miles. I will run a Ron Davis triple flow 31"x19" radiator for cooling. Trans will be Rossler turbo glide with 3.70 gear & 31" tall tires. Car weights 3200 lbs.
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Old 01-04-2012, 01:24 AM   #13
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Default Re: 5.0" bore spacing BBC on street ?

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Originally Posted by etjones View Post
OK - did alittle looking today. Here is what I am thinking , 706" BBC , 11.1 deck block, 5.3 crank, 4.600 bore with 11to1 comp.,7.250 rod ( not real sure on camshaft) RFD spread port NOS heads, tunnel ram intake & 2 dom. carbs. Thinking of 1 fogger kit & a pair of plates. Just wanting to know if that can make some street miles. I will run a Ron Davis triple flow 31"x19" radiator for cooling. Trans will be Rossler turbo glide with 3.70 gear & 31" tall tires. Car weights 3200 lbs.
Why a 5" bore space ? no bigger cubic inch , why not just do a 4.840 bore space ? Would keep cost down.
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Old 01-04-2012, 09:37 AM   #14
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Default Re: 5.0" bore spacing BBC on street ?

Sorry - that combo that I listed was a 4.840 bore spacing not a 5.0 - the block I looked at was the Dart Big M Race Series Iron Block , 4.480 bore spacing with a 11.1 deck height, bored to 4.600
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Old 01-04-2012, 09:39 AM   #15
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Default Re: 5.0" bore spacing BBC on street ?

707 is 5.0 bs..but why not 762 cubes then with 5.375 stoke instead of 5.125??

706 is old school bb
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