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 Distributor shim sizing
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4spta
Tribal Scout

USA
16 Posts

Posted - 11 Oct 2017 :  8:59:57 PM  Show Profile  Reply with Quote
Hi guys I was hoping someone could explain to me or tell me how to determine what size SIM goes between a distributor an engine block. And where do I get one. Possibly at a hardware store?

400/467cu.310cfm kauffman D-ports w/1.65 steel roller rocker arms. XE274-H cam.Forged steel Ohio crank.Eagle rods. Icon pistons.Balanced.HSD intake.750mech.sec Holley.1-3/4in hedders.3 in collectors.2-1/2in exhaust.Flowmasters.ST-10 tranny.4.10 gears. 6 point cage.subframe connectors.every bushing polyurethane. F/R drag shocks line lock. Lightened up front end. Appox.3500lbs

Bill Boyle
Horse Feathers (Charter Member)

USA
4750 Posts

Posted - 12 Oct 2017 :  07:58:14 AM  Show Profile  Visit Bill Boyle's Homepage  Reply with Quote
Hi Jeff

Why do you want to shim your HEI distributor? Isn't it the HEI that came stock with your TA 6.6 engine? Is you distributor misbehaving?

"Dedicated to keeping the classic Pontiac engine alive."

----
400 bored +.030, forged TRW pistons, ported 62 heads, Hedman headers, 2.5 SS dual exhaust X Pypes, Comp 276AH10 cam, Scorpion 1.65 RR, 850 Q-jet, stock intake & tuned HEI; original owner.
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Blued and Painted
Chief PONTIAC

USA
3395 Posts

Posted - 12 Oct 2017 :  10:42:09 AM  Show Profile  Reply with Quote
Normally the gasket is enough. An extra gasket could be used if needed.
Chevys can run into distributor clearance problems being the distributor mounts to the intake rather than the block.
If the distributor won't go all the way down, it may not be correctly engaged in the oil pump.
The intermediate shaft goes in from the oil pan side.
Check the fully engaged clearance with no gasket.


Bull Nose Formula/ 461/ Q-Jet/
TH400/ 3.08 8.5 / R44TS.

Edited by - Blued and Painted on 12 Oct 2017 10:52:51 AM
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4spta
Tribal Scout

USA
16 Posts

Posted - 12 Oct 2017 :  12:13:59 PM  Show Profile  Reply with Quote
Thanks for the help guys. Im useing the stock HEI in my TA. Its been out of the engine for awhile and we have moved. A friend had mentioned I should of had a shim

400/467cu.310cfm kauffman D-ports w/1.65 steel roller rocker arms. XE274-H cam.Forged steel Ohio crank.Eagle rods. Icon pistons.Balanced.HSD intake.750mech.sec Holley.1-3/4in hedders.3 in collectors.2-1/2in exhaust.Flowmasters.ST-10 tranny.4.10 gears. 6 point cage.subframe connectors.every bushing polyurethane. F/R drag shocks line lock. Lightened up front end. Appox.3500lbs

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4spta
Tribal Scout

USA
16 Posts

Posted - 12 Oct 2017 :  12:15:47 PM  Show Profile  Reply with Quote
My friend drives chevys so thers the problem lol. No

400/467cu.310cfm kauffman D-ports w/1.65 steel roller rocker arms. XE274-H cam.Forged steel Ohio crank.Eagle rods. Icon pistons.Balanced.HSD intake.750mech.sec Holley.1-3/4in hedders.3 in collectors.2-1/2in exhaust.Flowmasters.ST-10 tranny.4.10 gears. 6 point cage.subframe connectors.every bushing polyurethane. F/R drag shocks line lock. Lightened up front end. Appox.3500lbs

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4spta
Tribal Scout

USA
16 Posts

Posted - 12 Oct 2017 :  12:17:46 PM  Show Profile  Reply with Quote
Blue the double gasket is a good idea thx Jeff

400/467cu.310cfm kauffman D-ports w/1.65 steel roller rocker arms. XE274-H cam.Forged steel Ohio crank.Eagle rods. Icon pistons.Balanced.HSD intake.750mech.sec Holley.1-3/4in hedders.3 in collectors.2-1/2in exhaust.Flowmasters.ST-10 tranny.4.10 gears. 6 point cage.subframe connectors.every bushing polyurethane. F/R drag shocks line lock. Lightened up front end. Appox.3500lbs

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4spta
Tribal Scout

USA
16 Posts

Posted - 16 Oct 2017 :  4:33:36 PM  Show Profile  Reply with Quote
Problem solved thanks guys preciate it

400/467cu.310cfm kauffman D-ports w/1.65 steel roller rocker arms. XE274-H cam.Forged steel Ohio crank.Eagle rods. Icon pistons.Balanced.HSD intake.750mech.sec Holley.1-3/4in hedders.3 in collectors.2-1/2in exhaust.Flowmasters.ST-10 tranny.4.10 gears. 6 point cage.subframe connectors.every bushing polyurethane. F/R drag shocks line lock. Lightened up front end. Appox.3500lbs

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cortcomp
Coyote

USA
5322 Posts

Posted - 16 Oct 2017 :  8:19:00 PM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
What ended up being the issue?
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