Does double-roller cam chain/gear change geometry of crank pulley? - Chevelle Tech
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post #1 of 5 (permalink) Old Oct 7th, 19, 2:34 PM Thread Starter
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Jim
 
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Does double-roller cam chain/gear change geometry of crank pulley?

Question that just came to mind - I'm building a 350 with a double-roller cam chain/gear. I was wondering if the gears are thicker - I'm assuming they are - and if so, will this change the alignment of the balancer and crank pulley - i.e. will it stick out further because of the thicker crank gear?

Thanks in advance -

jim
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post #2 of 5 (permalink) Old Oct 7th, 19, 3:51 PM
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Mr Bill
 
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Re: Does double-roller cam chain/gear change geometry of crank pulley?

No. The gear is the same thickness where the harmonic damper seats against it. One thing you do have to watch is on some blocks the chain itself will hit the boss around the oil galley plug directly above the camshaft. You will probably have to do some massaging with the die grinder there.
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Bill Koustenis
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post #3 of 5 (permalink) Old Oct 7th, 19, 4:28 PM Thread Starter
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Jim
 
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Re: Does double-roller cam chain/gear change geometry of crank pulley?

Hi Bill -

Thanks for your response. Would there still be possible interference with a late model 86+ roller block? I didn't specifically check for this, although I didn't notice anything in the little I rotated things when I assembled. Maybe I better pull the pan and front cover and check for piece of mind.

jim
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post #4 of 5 (permalink) Old Oct 7th, 19, 4:42 PM
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Mr Bill
 
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Re: Does double-roller cam chain/gear change geometry of crank pulley?

Jim,

I just looked at one of each block and they look about the same Do you have the intake on ? Not sure if you could look through the big oil drainback hole with a small mirror and see it or not.

Bill Koustenis
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post #5 of 5 (permalink) Old Oct 7th, 19, 5:39 PM Thread Starter
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Jim
 
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Re: Does double-roller cam chain/gear change geometry of crank pulley?

Hi Bill -

No intake on yet - I'll have to check if there is a way to see in there without pulling the cover.

Thanks for the tip -

jim
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