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  #341  
Old 03-10-2024, 04:25 PM
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Played around with the steels in direct and forward drums for my TH400 to get the clearances set at .040. Disassembled my Q-jet to get the castings, linkages and other steel parts plated.
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  #342  
Old 03-11-2024, 12:20 AM
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Quote:
Originally Posted by SD455DJ View Post
Ken, Love the stance, love the color, love the wheels & tires...one of the nicest '68 GTO's I've ever seen...drool!

Dennis
I know you've seen a lot of these cars, and have a pretty impressive stable yourself, so I greatly appreciate the complement!

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'68 GTO - Ram Air II 464 - 236/242 roller - 9.5” TSP converter - 3.55 posi (build thread | walk around)
'95 Comp T/A #6 M6 - bone stock (pics)
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  #343  
Old 03-11-2024, 09:59 AM
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Had a very intermittent coolant leak (like, would occur literally months apart) that dripped behind the passenger tire under the fender only after I would turn the car off. Had the same leak last year that spurred a heater core R&R along with all heater hoses and clamps.

Same leak happened again a couple weeks ago, and my heart sunk wondering if my new heater core failed. Would've been super pissed, since the inlet line is double restricted to prevent water slugging, and I splurged and got the higher quality copper/brass unit. Thankfully, I was able to trace the leak to the inlet heater hose connection. When I did the R&R, I used one of the repro Wittek tower clamps - don't use these, at least for the 5/8" heater hose connection. The radius of the tower end of the clamp is too bulky compared to the actual strap, and so the strap ovals out the house and doesn't seal well. It even slightly caved in the copper tube where the tower part sat (luckily the fitting bead was still round). In hindsight, the same leak from last year might've just been the heater hose the whole time, since it was the original hose, and not the heater core.

And so I tried out, as recommended on this forum, a Gates PowerGrip heatshrink clamp (specifically the 32925# one), and admittedly smeared a thin glaze of Waterpump and Thermostat Housing RTV on the fitting to aid in the seal as well as provide lubrication to put the new hose on. Was able to position the PowerGrip clamp perfectly per the instructions, used my heat gun, and it resulted in a great seal which after two tests of running the system up to temp under pressure and then shutting the car down, didn't leak a drop and is bone dry. So far I'm a believer in these PowerGrip clamps.

Could've probably gotten a proper seal using an old-fashioned worm gear clamp like what the factory used (which I recently found out is how W72 cars actually came from the factory: the engine side of the heater hoses used the Wittek clamps, while the heater core connections actually used worm gear clamps) as well, but I wanted to try out these PowerGrip clamps since they are variable tension in response to thermal expansion/contraction, and I don't plan on removing this hose any time soon since it's a bear to get to in that I have to remove the inner fender liner.

So to nutshell, don't use Wittek tower clamps for the 5/8" heater hose connection, at the very least not flimsy repro ones, and the PowerGrip clamps really are amazing!

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  #344  
Old 03-11-2024, 02:21 PM
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The Wittek tower clamps are pretty finicky. I do a little prep to them before I install and I'm super careful when I clamp them down usually using vice grips to keep them straight. Even then I always have extra because some just don't hold. Hadn't heard of the PowerGrip clamps. They look pretty easy!

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'68 GTO - Ram Air II 464 - 236/242 roller - 9.5” TSP converter - 3.55 posi (build thread | walk around)
'95 Comp T/A #6 M6 - bone stock (pics)
  #345  
Old 03-11-2024, 06:31 PM
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I put Holley Retro bright headlights in my 73 Formula and 69 GTO. They are spendy at $200 each but well worth it in you night drive your old Pontiac. Before and after of the Formula.
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  #346  
Old 03-11-2024, 09:19 PM
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Quote:
Originally Posted by Drag Star Le Mans View Post
I put Holley Retro bright headlights in my 73 Formula and 69 GTO. They are spendy at $200 each but well worth it in you night drive your old Pontiac. Before and after of the Formula.
Are you using factory wiring or do you have relays?

  #347  
Old 03-11-2024, 10:45 PM
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Removed LH exhaust manifold to access mini starter. Connected battery cables and tested rotation. Plan to compare compression pressure of each cylinder. If good, will replace worn cam and HFT lifters and move on. If bad, will consider rebuild of numbers matching spare '64 engine.

  #348  
Old 03-12-2024, 12:46 AM
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Quote:
Originally Posted by 65 Lamnas View Post
Are you using factory wiring or do you have relays?
Simple plug and play.

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  #349  
Old 03-12-2024, 09:18 AM
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Cleaned up the G8 with a clay bar. Didn't find any new chips or scratches so that made me feel pretty good.

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  #350  
Old 03-12-2024, 07:53 PM
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Picked up the new motor for the Formula 😀
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74 Formula
469, 6X-4's, 72 Intake, Ramair Manifolds.
3 inch exhaust with x-pipe
Custom Roller Cam, 1.52 Roller Rockers
Quadrajet done by Cliff
3:42 gears


12.075 @ 112.70
12.092 @ 112.43
12.128 @ 111.71

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  #351  
Old 03-12-2024, 08:05 PM
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Quote:
Originally Posted by form74 View Post
Picked up the new motor for the Formula 😀
No fair! Need details.

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71' GTO -original 400/4-speed/3.23 posi
13.95 @ 102.1 on street tires @ 4055lbs.

‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears.
  #352  
Old 03-12-2024, 09:55 PM
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Let's see. First, I took my boat to a local shop to have some small holes in the aluminum hull welded, then I moved the GTO from my shop up to my garage so I could put my 50 Streamliner in the shop to put the intake/ exhaust manifolds and cooling system back in it.
The pollen is terrible right now, so I won't be taking the Goat out for a couple weeks to a month, if then. I had to move the boat to get to the 50.

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  #353  
Old 03-13-2024, 09:08 AM
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Originally Posted by 67drake View Post
No fair! Need details.
400 block 30 over with a Stroker kit to make it a 461

E-heads 87 D port

Rpm intake

Roller cam

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74 Formula
469, 6X-4's, 72 Intake, Ramair Manifolds.
3 inch exhaust with x-pipe
Custom Roller Cam, 1.52 Roller Rockers
Quadrajet done by Cliff
3:42 gears


12.075 @ 112.70
12.092 @ 112.43
12.128 @ 111.71

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  #354  
Old 03-13-2024, 11:33 AM
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Quote:
Originally Posted by form74 View Post
400 block 30 over with a Stroker kit to make it a 461

E-heads 87 D port

Rpm intake

Roller cam
Ah, the 11’s are calling!

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71' GTO -original 400/4-speed/3.23 posi
13.95 @ 102.1 on street tires @ 4055lbs.

‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears.
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  #355  
Old 03-13-2024, 02:33 PM
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Quote:
Originally Posted by Drag Star Le Mans View Post
I put Holley Retro bright headlights in my 73 Formula and 69 GTO. They are spendy at $200 each but well worth it in you night drive your old Pontiac. Before and after of the Formula.
WOW - Really a big difference!

  #356  
Old 03-13-2024, 04:34 PM
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Picked up my glide.
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  #357  
Old 03-13-2024, 05:23 PM
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Pulled a oil sample from the new engine.Will start taking it off the run stand tomorrow.Tom

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  #358  
Old 03-13-2024, 09:31 PM
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Still on the TH400. Got the case saver installed but f**ked up the intermediate pressure plate, and had to get another one. Painted the pump red for an additional 10HP. Looks like there was a rear thrust issue
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  #359  
Old 03-14-2024, 03:18 PM
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Default fun with 3D printing

a friend of mine made me some custom inserts for my Rally 2s (for my 58 wagon project)

I may add some clear epoxy resin to coat them with for a smooth glossy finish
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  #360  
Old 03-14-2024, 07:29 PM
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Scored a decent set of Cal Custom VCs that will polish up nicely....IMO the best-looking retro valve covers.

The same guy has a couple of OEM aluminum intakes (one NOS)and a couple sets of 7F6 heads for sale...He's advertising on FB under Pontiac Pickers Classified group, if anyone is interested...his name is Marty and in St. Louis area
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