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Topic: 305 engine crank hitting Vmac tourque ball housing
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Page 1 of 1 of 6 replies
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February 07, 2012 at
08:39:58 PM
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12/05/2010
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When we first put our car together we discovered that there are certain sbc cranks that have an odd shaped flange on it that hit the motorplate. We ended up getting another crank, one where the flange was more circular than the one that we started with. And that crank hit three different motorplates, so I don't know what was up with it. But that was our solution.
Never hit stationary objects!
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February 07, 2012 at
11:33:00 PM
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12/07/2010
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18
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Reply to:
Dont use spacers you will screw the alignment of the u joint to the torque ball up. Cast cranks or aftermarket cheaper cranks have a big counterweight on them and you need to have them turned down before the engine is balanced. If you get a mag or aluminum firewall casting they will have more clearance or you can grind them out very easy.
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February 07, 2012 at
11:51:49 PM
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03/26/2009
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96
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I had an older stock crank that I just had my engine builder turn the weight off of to the same OD of the u-joint flange. If you get it balanced after the weight is cut off there won't be any problems.
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February 08, 2012 at
02:36:10 AM
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07/10/2007
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947
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Reply to:
Who built your motor? If an engine builder did it (assuming they've done engines for a sprint car before) I would call them and ask why they wouldn't have corrected it!
FYI- Standard round flange for a Small Block Chevy should measure 4-5/16" in diameter. If you have a tang on your flange it won't work.
do it in the dirt
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February 08, 2012 at
05:30:42 AM
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04/10/2007
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949
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Reply to:
consider a buckley?
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February 08, 2012 at
07:55:44 AM
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11/25/2005
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This message was edited on
February 08, 2012 at
08:10:22 AM by dirtybeer
Does the housing have strenthening veins that stick out a little on the inside,or a little extra metal around the area where bolts go thru on the inside? If so that's where its hitting the crank and you can grind just a little off the veins or around the bolt area and your in business.
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February 08, 2012 at
04:56:16 PM
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09/07/2010
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the vmac one that i was using its the smallest one on the market 5 inches of clearance i went and bought a dmi one and it has 5 5/8 clearance so i am good to go now
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