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Old 01-16-2011, 05:36 PM   #1
bighead
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Default Your thoughts on BBC/Procharger CID

I'd like to start laying the ground work for a new procharger motor and hope to increase my knowledge on this subject. My chassis is a moly dbl frame rail door car, 33x17 tires, weight with driver under 2500lbs. I'd like to run some local quick 8 deals that would require 4.60-4.80 et's. What's your thoughts on displacement considering the cost of an aftermarket shortblock is about the same over a couple hundred cid range? Thanks for your feed back, bert
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Old 01-16-2011, 06:21 PM   #2
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Default Re: Your thoughts on BBC/Procharger CID

f-3 front mount , a/w intercooled or methenol , 502ci billet crank and rods standard heads at 2500lbs this goal is easy
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Old 01-16-2011, 06:36 PM   #3
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Default Re: Your thoughts on BBC/Procharger CID

4.125 stroke and 4.500 bore. With a CN block, or a KB 600. Conventional heads or big chief, will make all sorts of power.
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Old 01-16-2011, 09:45 PM   #4
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Default Re: Your thoughts on BBC/Procharger CID

Thanks for the reply! So a smaller inch engine is the ticket? What kind of rpm would you spin one up to? Aluminum rod motor or billit steel? Thanks again!
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Old 01-16-2011, 09:52 PM   #5
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Default Re: Your thoughts on BBC/Procharger CID

Never build a max cubic inch power adder engine.
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Old 01-16-2011, 09:53 PM   #6
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Default Re: Your thoughts on BBC/Procharger CID

I have gone 4.20 @ 169mph weighing 2000 lbs with a 540, F2, 22lbs, alky, 7600 in the traps. The 4" stroke guys are recommending does sound good. Your goal sounds very reasonable.
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Old 01-16-2011, 10:15 PM   #7
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Default Re: Your thoughts on BBC/Procharger CID

Quote:
Originally Posted by bighead View Post
Thanks for the reply! So a smaller inch engine is the ticket? What kind of rpm would you spin one up to? Aluminum rod motor or billit steel? Thanks again!
It's a solid combo, especially with a blower you don't need a bunch of stroke because you don't want that big arm swinging around.
We like to run 4"-4.250" max on a blower motor. And with a 4.500 bore you get a nice size bore to let the heads breathe.
We are in the process of building a 4.600 bore motor now with a 4" arm to kind of test a theory.
But we have made about 2500hp in our '57 Chevy with a 525.
I would run a billet rod, with a good Diamond piston with thick skirts.
If you are interested shoot me a PM and we can get you a quote on some stuff.
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Old 01-17-2011, 03:50 AM   #8
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Default Re: Your thoughts on BBC/Procharger CID

4.250 stroke 4500-4600 bore oringed receiver grooved 6 stud chevy .
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Old 01-17-2011, 07:17 PM   #9
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Default Re: Your thoughts on BBC/Procharger CID

Guys, thanks again for sharing your knowledge.
I look forward to getting started on this build!
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Old 01-18-2011, 03:32 PM   #10
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Default Re: Your thoughts on BBC/Procharger CID

4.00 stroke is about perfect for a 9.800 deck BBC power adder.
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Old 01-18-2011, 04:15 PM   #11
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Default Re: Your thoughts on BBC/Procharger CID

call Pro-line ask for Eric
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Old 01-18-2011, 04:57 PM   #12
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Default Re: Your thoughts on BBC/Procharger CID

what is the best stroke for a small block?
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Old 01-19-2011, 01:39 PM   #13
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Default Re: Your thoughts on BBC/Procharger CID

Quote:
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what is the best stroke for a small block?
Depends on deck height.
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Old 01-19-2011, 04:31 PM   #14
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Default Re: Your thoughts on BBC/Procharger CID

I am also a big fan of the 4 inch stroke even though most of what I build is 4.25 540 is just a great combo for boost.

the kind of power you want to make is a easy deal and I have proven engine builder kits all laid outor do complete engines.

But in general i would set you up with a 540 (since you have a big tire car) nice easy F3 135 or a 139 conventional head will work fine.
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Old 01-20-2011, 08:28 PM   #15
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Default Re: Your thoughts on BBC/Procharger CID

9.5 on the small block. for the big block- 5.0x4.25= 667 in.
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