hei issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fdbdw · 04-06-2009, 09:36 PM

Anyone else run into this problem, just dropped in a 65k hei from Skip White, the vacum advance hits the manifold and blocks the manifold vacum port, Im hoping that once I get it wired up and timed that the correct timing postion will take the vac adv far enough clockwise to get it out of the way, anyone else have an issue with this

berencam · 04-06-2009, 10:11 PM

Yea thats how it was for me too, i just put an elbow on it and pointed it the other way, i used a fuel line to attach to the elbow to give something for the hose to go over. Here is the elbow i used, although its not pointed that way anymore. i have it pointed to the drivers side.

68C15 · 04-06-2009, 10:29 PM

why is the vacuum can off by almost 1/4 turn? I would stick with a good GM HEI.

oldsub86 · 04-06-2009, 10:37 PM

Can't you just move the plug wires all over one hole and then move the whole distributer back some?

Sport/Truck · 04-06-2009, 10:37 PM

Quote:

Originally Posted by 68C15

why is the vacuum can off by almost 1/4 turn? I would stick with a good GM HEI.

Isn't that just related to how it's stabbed in? I've heard nothing but good stuff abut SW HEI's.

s/t

**Boog** · 04-06-2009, 10:42 PM

Yes. As far as where the vacumn can is located it is just a matter of pulling the dist out, turning the oil pump shaft clockwise just a bit and reinstalling the dist with the can turned more to the rear. No need to move plug wires that way.

fdbdw · 04-07-2009, 07:36 AM

wouldnt you have to move the oil pump and the plugs, cause if you took it out at #1 tdc then move turned the oil pump and put it back in, the rotor will be pointed at a different plug

**rockc** · 04-07-2009, 07:59 AM

Sounds like you are off one tooth on the cam with the dist.

**Boog** · 04-07-2009, 10:30 AM

Quote:

Originally Posted by fdbdw

wouldnt you have to move the oil pump and the plugs, cause if you took it out at #1 tdc then move turned the oil pump and put it back in, the rotor will be pointed at a different plug

No need to move the plug wires, just turn the dist clockwise to line the rotor back up on number one terminal. Doing this moves the vacumn can further away from the intake so to give you some adjustment room.
Also, it may be easier for some to just move the plug wires around 1 terminal on the dist cap then readjust the timing.

dznucks · 04-07-2009, 08:53 AM

Mine is pointed just like the one in the pic. you should be able to get it close to see where it will sit before cranking it. if its not pointing the right way you are off a tooth.

04-06-2009, 10:11 PM	#2
berencam Registered User Join Date: Aug 2007 Location: branson mo Posts: 933	Re: hei issue Yea thats how it was for me too, i just put an elbow on it and pointed it the other way, i used a fuel line to attach to the elbow to give something for the hose to go over. Here is the elbow i used, although its not pointed that way anymore. i have it pointed to the drivers side. Attached Images __________________ 69 chevy c10 350 3 speed manual wood bed build thread here r.i.p. 70 c10 auto 350 build here

04-06-2009, 10:29 PM	#3
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: hei issue why is the vacuum can off by almost 1/4 turn? I would stick with a good GM HEI.

04-06-2009, 10:37 PM	#4
oldsub86 Registered User Join Date: Dec 2002 Location: Canada Posts: 695	Re: hei issue Can't you just move the plug wires all over one hole and then move the whole distributer back some? __________________ 1968 Chevy - 292 with a powerglide

04-06-2009, 10:42 PM	#6
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,543	Re: hei issue Yes. As far as where the vacumn can is located it is just a matter of pulling the dist out, turning the oil pump shaft clockwise just a bit and reinstalling the dist with the can turned more to the rear. No need to move plug wires that way. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

04-07-2009, 07:36 AM	#7
fdbdw Registered User Join Date: Jan 2009 Location: colorado springs Posts: 479	Re: hei issue wouldnt you have to move the oil pump and the plugs, cause if you took it out at #1 tdc then move turned the oil pump and put it back in, the rotor will be pointed at a different plug

04-06-2009, 09:36 PM	#1
fdbdw Registered User Join Date: Jan 2009 Location: colorado springs Posts: 479	hei issue Anyone else run into this problem, just dropped in a 65k hei from Skip White, the vacum advance hits the manifold and blocks the manifold vacum port, Im hoping that once I get it wired up and timed that the correct timing postion will take the vac adv far enough clockwise to get it out of the way, anyone else have an issue with this

04-07-2009, 07:59 AM	#8
rockc Registered User Join Date: Jul 2007 Location: SE WY Posts: 640	Re: hei issue Sounds like you are off one tooth on the cam with the dist. __________________ 72 chevy 3/4 ton 4X4

04-07-2009, 08:53 AM	#10
dznucks Registered User Join Date: Feb 2006 Location: Smyrna, Ga Posts: 1,647	Re: hei issue Mine is pointed just like the one in the pic. you should be able to get it close to see where it will sit before cranking it. if its not pointing the right way you are off a tooth.



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