Quick advice on stroking a BB - Team Camaro Tech
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post #1 of 7 (permalink) Old Nov 21st, 02, 03:08 AM Thread Starter
 
Join Date: Oct 2001
Location: charlotte
Posts: 6
Well it looks like I have to buy a new crank. My machine shop will get me one that is .010-.010 including rod and mains for $243. Or I can get a new SCAT without bearings from a power seller on ebay for $215 + shipping. He also has a stroker SCAT for a little more money that would give me roughly a 496. Here are my questions.

1. What would you do?
2. Can I use my same rods with the stroker or would I have to buy new ones?
3. What about pistons, do I have to buy special ones, if so which ones?
4. Does the block have to be clearenced like the sb 383 stroker?

Any thing that I may have forgotten please chime in.
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post #2 of 7 (permalink) Old Nov 21st, 02, 05:14 AM
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Join Date: Apr 2001
Location: Out here
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Without knowing all the info on your original setup. I'm kinda guessing but this should give you an idea. For a 496 rods won't need to be replaced but pistons will. You need to keep in mind that as you increase stroke that distance, so to speak, has to go somewhere. In this case it would put the piston outside the hole. As far as clearencing is concerned the only way to know for sure is to put the thing together and see how much you have. Big blocks respond very well to more inches. It really gives those big intakes, ports, and valves a chance to flow. And on the street inches are hard to beat. Hope this helps a little. Scott

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New skool is cool but a 509 and 4 speed still rulz
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post #3 of 7 (permalink) Old Nov 21st, 02, 08:35 AM
 
Join Date: May 2002
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the more cubic inches the better.i would go for the 496.jeff

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69z 509 merlin 600 hp/620 torque pro street
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post #4 of 7 (permalink) Old Nov 21st, 02, 09:59 AM
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Join Date: Jan 2002
Location: Abilene, Tx
Posts: 40
I built a BBC 489 (454 w/ 1/4 stroke, +.030 bore) about 4 years ago for a one ton p/u. It's still together today & runs strong. We did not have to clearance the block for the 1/4 crank to fit. However, I did use a +.400 rod. If you use the factory rods, your rod/stroke ratio is worse than a SBC400. With a +.400 rod, it brings it back to slightly better than a stock 454. Honestly, (in my opinion) the rod/stroke ratio isn't critical if you keep the rpms conservative. It was really overkill for a under 5,000 rpm pickup motor, but if you plan on exceeding 6-6,500 rpm you might consider the longer rods.

Just my $.02

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Stace
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post #5 of 7 (permalink) Old Nov 21st, 02, 01:08 PM
 
Join Date: Apr 2000
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I didn't use .25" longer rods in my 496 b/c I missed it when Lunati's told me to!!

I ended up having them cam cut machine my counterwights, then balance with heavi-metal. It ended up slightly cheaper then a set of longer custom rods back before everybody and their brother had good cheap longer rods.

I am not too concerned about my r/s ratio, b/c I am only going to run up to like 5500 to 5800rpm! I don't feel I need to rpm her b/c of the power she produces, anyway!!!

I just call it my great big "tow-truck" motor!!! pdq67



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post #6 of 7 (permalink) Old Nov 21st, 02, 06:21 PM
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Join Date: Aug 2002
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I'd do the 496.
pdq, I didn't know you were in Columbia...
Do you ever come up to Kansas City or Topeka to race?
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post #7 of 7 (permalink) Old Nov 22nd, 02, 12:35 PM
 
Join Date: Apr 2000
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No,
I do like to go to Springfield if I get the chance in the fall.
My car hasn't been on the road since '86! But it will be on the road again one of these years!!!

The Good Lord willing and I don't get old and die first... pdq67



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