LT1-LT4 Modifications 1993-97 Gen II Small Block V8

double roller timing chain for use with 24x system

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Old 04-26-2012, 11:42 AM
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Default double roller timing chain for use with 24x system

what is everyone using with the use of their billet timing cover?
Old 04-26-2012, 12:10 PM
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I'm using the Cloyes billet non adjustable
Old 04-26-2012, 12:15 PM
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part number?

will it work with no modifications except the use of the 24x billet timing cover
Old 04-26-2012, 02:49 PM
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5146 I think.

Yes
Old 04-26-2012, 02:51 PM
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im also running a cloys billit timming set
Old 04-26-2012, 02:56 PM
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thanks
Old 04-26-2012, 03:00 PM
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Double roller with stock timing cover, just worked on the inside and used 2 gaskets. No problems at all.
Old 04-26-2012, 04:29 PM
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Cloyes 9-3145
Old 04-26-2012, 04:54 PM
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Originally Posted by T/A KID
Double roller with stock timing cover, just worked on the inside and used 2 gaskets. No problems at all.
Really?? tell me how to do this and do you have pix? If so send them to me asap please! thanks
Old 06-27-2012, 05:29 PM
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Originally Posted by T/A KID
Double roller with stock timing cover, just worked on the inside and used 2 gaskets. No problems at all.
I would like to see this as well.
Old 06-27-2012, 07:52 PM
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Rollmaster billet set here with the TPIS billet timing cover works fine no issues.
Old 06-27-2012, 11:56 PM
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Originally Posted by T/A KID
Double roller with stock timing cover, just worked on the inside and used 2 gaskets. No problems at all.
[QUOTE=DVS LT1;16463341]I'm 99.9% certain my engine builder had no problems re-using my old stock timing cover with the 9-3145 Cloyes true roller setup under there.

ya but the guy above you t/a kid did it with the use of a efi 24x reluctor wheel. WHich efi24x says cant happen, which is why they sell the billet timing cover.
Old 06-28-2012, 06:07 AM
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Originally Posted by DVS LT1
I'm 99.9% certain my engine builder had no problems re-using my old stock timing cover with the 9-3145 Cloyes true roller setup under there.
With the profile (dished shape) of the 4x GM LT1 crankshaft reluctor and double row timing chain, it will not allow the reluctor to seat against the crankshaft timing sprocket. You would have to put a spacer between the crankshaft timing sprocket and reluctor to move it away from the double row timing chain. And then you get into clearance issues with the timing cover.

Originally Posted by robsquikz28
ya but the guy above you t/a kid did it with the use of a efi 24x reluctor wheel. WHich efi24x says cant happen, which is why they sell the billet timing cover.
Yes, you are correct.
Old 06-28-2012, 06:13 AM
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Originally Posted by T/A KID
Double roller with stock timing cover, just worked on the inside and used 2 gaskets. No problems at all.
From experience, I will never recommend moving the crank sensor forward (two timing cover gaskets will move the crank sensor forward). This has bad news written all over it. If it works for you, then great (but I will never recommend it).
Old 06-28-2012, 08:08 AM
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Originally Posted by S10Wildside
From experience, I will never recommend moving the crank sensor forward (two timing cover gaskets will move the crank sensor forward). This has bad news written all over it. If it works for you, then great (but I will never recommend it).
Share the bad new?
Old 06-28-2012, 10:22 AM
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Originally Posted by SS RRR
Share the bad new?
The "bad news" includes...
  • discovering that there is no clearance available with a double row timing set, the GM timing cover, and any reluctor (I've discussed this many times in other posts)
  • phone calls and email from customers who have used a double row timing set and report a no start, no spark condition
  • generally the only installations that have a no start, no spark condition are the ones using aftermarket timing sets that change the geometry that GM designed (in orther words the crank and/or cam timing sprockets are too thick)
  • bench testing to see where the sensor "reads' and does not "read" from the reluctor (again, I would advise against moving the sensor forward)
Old 06-28-2012, 09:52 PM
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very true Mike.

WHich is why the billet cover is recommended



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