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Messages - Stingr69

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Originality / Re: Holley Dual Feed Fuel Line Y-Block
« on: October 25, 2018, 12:59:03 PM »
Weatherhead fittings were/are available at any hardware store.  Not sure about the assembly line.

Maintenance / Re: 302 Valve adjustment
« on: October 22, 2018, 11:32:24 AM »
The actual rocker arm ratio can be different than the advertised ratio. 

The GM original cam grind has a .020 high clearance ramp (that is very long).  If you have a dial indicator you can determine the exact lash for your particular non-original rocker arms. 

Remove one rocker arm - Set up dial indicator to read cam lobe lift on that pushrod tip - Rotate the engine until the cam lifts the pushrod .020" - Remove dial indicator and reinstall your rocker arm with zero lash - rotate the engine so that cam lobe is back all the way down to the base circle - Measure the lash at that rocker arm tip to valve now.  That lash dimension you measured is your hot lash spec for your particular rocker arms.

Good idea to recheck and record all the valve clearances after cam run-in.  If the dimensions are opening up on one or more valves, you could have wiped out those lobe(s).

Restoration / Re: undercoating
« on: October 21, 2018, 01:37:18 PM »
The factory specified undercoating be applied as shown in the Assembly Instruction Manual.  UPC 11/13 Sheet B1 shows where it was applied inside the front fenders.  Basically only the inner rear part of the inner fender was coated at the factory.  If you have more than that on your inner front fenders, it was not factory applied.  Rear inner wheel wells were coated as well but it may have been part of Fisher Body plant procedures. You can compare front to back.

Mild Modifications / Re: Stock-Looking HEI
« on: October 17, 2018, 06:33:46 PM »
I actually have used a "Stinger" magnetic trigger conversion for a bit and now use the GM points (acting as a trigger switch only) with a Crane Multispark CD setup and stock coil.  The points electrical contact surfaces do not wear out because they only carry a small switch current this way.  I get an adjustable rev limiter with the Crane box so that is a plus. Box is mounted inside car under the center speaker grille.  Can set RPM limit to 2500 for "Valet Mode".  Pretty handy.

Restoration / Re: 1968 SS 396 Clutch
« on: October 16, 2018, 03:41:07 PM »
That flywheel is for the 11" clutch.  You may be able to resurface it and run it if not heat cracked too bad.

If the disk has enough material on it, and it is not warped, and the springs are still tight, you could TRY to use it.

The pressure plate can get heat damage and it will be difficult to diagnose visually.  If the heat checks are not too bad, you can bench assemble the clutch to the flywheel and see if the diaphragm fingers are all still aligned with everything torqued down.

All that but still comes down to whether or not it will do its job.  If you adjust it properly AND it still will not release, you will need to pull the whole thing apart again to replace it.  If the pressure plate springs are heated to where they will not clamp hard enough anymore, you will need to pull it apart again and replace the assembly.

Replace the throw out bearing for sure and examine the pilot bushing to see if you can reuse it.

OR....just replace it now.

I have removed and replaced my clutch 3 times in one day to fix a damaged pressure plate that "looked" good.

Restoration / Re: Foundry Black Paint
« on: October 12, 2018, 05:52:03 PM »
It was a cheap flat to semi gloss which the castings were dunked in prior to machining.

Nice job on the M/C.  Makes me want to refinish mine now.

General Discussion / Re: Anybody know this Z28 ?
« on: October 09, 2018, 07:21:21 PM »
LOTS of odd cars and combinations out there.

Mine is 10A with no console, no tach or guages or spoilers but it did get (ugly) light green custom interior and optional radio with kick panel speakers.

General Discussion / Re: Anybody know this Z28 ?
« on: October 08, 2018, 10:19:10 PM »
Too early for "Tach required".

General Discussion / Re: Is there any history on this ebay 69Z?
« on: October 04, 2018, 03:47:53 PM »
With any car, if you are serious, do a personal on site inspection BEFORE purchase.  I don't care who the seller is.  That way you reduce the chance of any regrets.

Arms length only transaction is my advice here.  Ronald Reagan said it best....."Trust, but verify".

Decoding/Numbers / Re: 68 Dash Vin Holder Replacment
« on: October 04, 2018, 12:12:51 PM »
I would bet the boneyard has a LOT of those.  Not sure if they are fully generic or not but I would try looking for a period correct GM product to scavenge one off.

General Discussion / Re: Is there any history on this ebay 69Z?
« on: September 30, 2018, 01:05:59 AM »
Might be Jeff Byttner's car.  He had one like that back in the day.

General Discussion / Re: Is there any history on this ebay 69Z?
« on: September 28, 2018, 03:37:25 PM »
VIN in ad is wrong.  Not even a '69. 

General Discussion / Re: fan blade in relation to shrowd
« on: September 25, 2018, 12:32:49 PM »
My 2 cents - Water pumps do one of three things - They either leak coolant out the weeping hole, or the bearings fail causing them to fall completely apart, or they pump water.   Thats all.

Grab the upper and lower radiator hoses to see if you have any flow.  Bottom hose temp should be close to top hose temp if you have water flow. No flow makes the thermostat suspect.

If you overheat while driving at highway speed, the fan is not a factor.  Fan is important when driving at slower speeds or stop/go traffic.  Check for missing blades.  if fan is new to you, check for proper rotation direction - Not all fans rotate the same direction.

Fan clutch is not that expensive and easy to change out if it is dead.

Thermostat is easy to check with pan of hot water to see if it opens.


Mild Modifications / Re: Replacement hood
« on: September 22, 2018, 01:39:31 PM »
The shop ruined it.  JEEEEZ !!!

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