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 Tempest / Lemans / GTOs
 67 Le Mans pulleys etc
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RonW
Buffalo

44 Posts

Posted - 31 May 2016 :  10:43:09 PM  Show Profile  Reply with Quote
I know I've said I'm going to start working on my 67 before, but this time is for real.
I am worried about my 670 headed / 400ci on pump gas, so for starters I thought I'd better have a good cooling system.
I'm installing a 3 row Champion aluminum radiator and my engine has an old 8 bolt water pump.
I thought I was doing a good thing when I bought a (68 and later) new timing cover, so I could install an 11 bolt hi-flow aluminum water pump and an SFI harmonic balancer.
I thought together these items would update my engine to the 68 and later style.
When I pulled the pulley and balancer off yesterday I noticed my pulley is a 6 bolt mount not a 4 bolt.
I can get a 4 bolt pulley easy enough (I think), but as I start putting it back together, am I going to run into other issues (like belt alignment, etc.)?
I appreciate any info.

Phil
The Great White Buffalo

USA
7222 Posts

Posted - 01 Jun 2016 :  07:53:31 AM  Show Profile  Reply with Quote
If you can provide a measurement for comparison, I or one of the other members can check our 4 bolt pulleys against it.

Bowties are for Pee-wee Herman. "Chevy": even the name sounds cheap, but not as cheap as your Pontiac will be with an LS transplant.
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RonW
Buffalo

44 Posts

Posted - 01 Jun 2016 :  8:23:14 PM  Show Profile  Reply with Quote
Thanks for your offer Phil, much appreciated.
I was hoping someone might have first hand knowledge making this update.
At this point I don't know if I can compare any measurements, as I'm changing the damper as well and I don't know where the face will be compared to the 67 damper.
I have the new damper and a four bolt pulley coming hopefully this week, so I'll see how it goes.
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Mordor67
Tribal Scout

22 Posts

Posted - 22 Jan 2017 :  10:33:58 AM  Show Profile  Reply with Quote
Did you ever get the 11 bolt pump to work with the 67 pulleys, etc? Doing the same thing to a 67 Tempest and want to run the 11 bolt pump. Looks as though the 11 bolt is 1/2" longer though they did make a shorter one in '69 (4"), 1 yr only.
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RonW
Buffalo

44 Posts

Posted - 23 Jan 2017 :  10:46:31 PM  Show Profile  Reply with Quote
Decided to pull the motor for a tear down. Haven't sorted the pulleys out yet.
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Blk69Judge
Tribal Scout

USA
2 Posts

Posted - 27 Jan 2017 :  1:01:49 PM  Show Profile  Reply with Quote
quote:
Originally posted by RonW

Decided to pull the motor for a tear down. Haven't sorted the pulleys out yet.

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Blk69Judge
Tribal Scout

USA
2 Posts

Posted - 27 Jan 2017 :  1:10:04 PM  Show Profile  Reply with Quote
Fairly sure you will have to go to the 68 n up 4 bolt balancer
and the 68-70 crank pulley ...those old 67 n older balancers are at a ripe age for the rubber to fail ... and your timing mark is going to be an inch away from the balancer now.w/ 67 balancer.. even tho we time by ear mostly ... and the 69 1/2-70 waterpump pulley..9799127 or 128 ac ..
the 67-70 power steering pumps are all A ok and should be finr... not a 66 pump 67 -70 ...
if you need pulleys I should be able to help
or get em for you ....
Scott

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Mordor67
Tribal Scout

22 Posts

Posted - 28 Jan 2017 :  09:33:16 AM  Show Profile  Reply with Quote
Cool. My 400 almost together so when it gets in the car will find out what works; or dont. definitely using the 70 balancer and crank,water pump pulleys

Edited by - Mordor67 on 28 Jan 2017 09:35:21 AM
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mordor 67
Tribal Scout

USA
6 Posts

Posted - 07 Apr 2017 :  2:27:37 PM  Show Profile  Reply with Quote
Well, got the 326 out and transferred the alt, PS pump and brackets to the 400. The 400 crank and water pump pulleys stick out 5/16" further than the 326 pulleys did. So I am going to fabricate a spacer that thickness to go behind the aluminium bracket that bolts to cyl head. this should work just fine but bottom line; they dont just interchange exactly. I got some pics but having trouble trying to upload here

Jayya
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Mordor67
Tribal Scout

22 Posts

Posted - 07 Jun 2017 :  3:49:26 PM  Show Profile  Reply with Quote
I ended up getting 5/16 spacers to move the alt and PS pump out to line up with the 70 pulleys. This worked well but made the factory bolts and PS stud too short. So I used 3 SS allthread studs in the aluminium bracket on the pass head. This actually made assembly of the alt and PS pump much easier. I also had to put a longer stud in the PS pump itself. A 3/8 spacer between pump body and bracket on the head along with the factory cupped washer worked perfect. A picture would be worth 1K words here but this site not user friendly for pics. Also note-11 bolt WP moved the fan that much deeper into the shroud but seems OK. Harder to get shroud on/off the car. The upper 67 alt brackets worked OK, but are no longer even with each other. Hope this helps anybody doing the same thing...
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