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111393 Posts in 12825 Topics by 4913 Members
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256  Camaro Research Group Discussion / Restoration / Re: Breaking in a motor on: September 03, 2007, 08:22:19 PM

What needs to be done with the old distributor to use it to prime the motor?



   All I did was take the dist. gear off and grind away all of the teeth that would normally mesh with the cam gear teeth so once you drop it down it won't mesh with the cam and try and spin it at the same time you are turning the oil pump to bring up the pressure...
   As long as the diameter of the ground section (where the teeth were) ends up being the same as the top section of the gear - or slightly smaller in diameter it will work great, sealing off the oil passages as any normal distributor would and yet still surround and engage the oil pump slot in a positive way.
   I also took the advance mechanism section off (where the springs and weights normally reside) and ground the round shaft into a hex shape so a cordless drill could be easily grip it and all was done... 
257  Camaro Research Group Discussion / Maintenance / Re: Oil Pressure question......... on: August 23, 2007, 11:57:56 AM
I think that there is a maximum pressure that you want as well, maybe 60-70 psi, even when you are accelerating at high RPM. Too much can be as detrimental as not enough. Jerry Mac shifts his engine at 8200 RPM when racing, so he ought to know what works.
Jimmy V.

Most people think they need big pressure and volume and opt for the big block style pumps only to find they either pump too much oil into the upper end and oversaturate everything and/or suck the pan dry (if its a regular OEM style pan) and end up with really big problems. All a big pump with volume and pressure increases does is eat up HP trying to spin it while creating other oiling 'overkill' problems.
My 302 gets about 65psi when running over at 3000 rpm or over and idles hot at about 40-45psi and its just a regular volume (albeit higher pressure) Z28-style aftermarket Speed Pro version (which I think means it only has a slightly different pressure spring installed) and I consider it all or more than that or any other similar engine should ever need.
I have read stories where high winding small blocks are drag raced with setups where the engine basically runs out of light grade oil in the pan at the same point it finishes the quarter mile run - essentially ending with 0 psi oil pressure and the engine lives quite well for years. Sounded like a pretty dicey way to run an engine to me, but users assume they are saving horsepower by using as light an oil and as small a volume as possible... Apparently the oil film left is sufficient for a few seconds of low engine speed operation until the oil gathers back in the pan in the shutdown area past the finsih line - but it does demonstrate that not a lot of pressure or volume is required to make a small block live at moderate engine speeds obviously - Randy
258  Camaro Research Group Discussion / Maintenance / Re: Motor Shakes badly on: August 10, 2007, 04:19:46 PM
Thanks John. I have talked to a few guys here and it seems that the concensus is that i put the 396 flywheel on. I will pull it off and get a 454 flywheel. Also I will look into the pulley also.

Thanks for your input I really appreicate it.

Sucks cause i got everything bolted up nice to. Is it a tough job to remove and replace the flywheel in the car or would it be easier to pull the motor AGAIN...LOL

Does the balancer appear to have an actual wobble for part of its rotation or is it just always that that close to the water pump that it rubs slightly?
If it actually has a wobble could the crank snout have hit anything in transit anywhere (machine shop etc) to bend it and that is causing the balancer to wobble? If other things check out keep it in mind.
Probably the balancer and /or flywheel as others have mentioned but the bent snout came to mind because a friend bent his while trying to get his motor in and didn't notice it and it sounded similar to the way his ran afterwards... Randy
259  Camaro Research Group Discussion / Originality / Re: California license letter sequence on: August 08, 2007, 10:00:50 PM
Thanks Gary.
I know the plates are not allowed currently, but I am hoping that will change someday and I want to have a set that I can switch to when it does.

My brother bought his 69 SS while he was in the Army in Vietnam. His begins with "Z". I think he picked the car up in San Francisco upon his return in about June of 69.

 I have a set with 2 tags - upper left stickered in 1968 and top right last tagged in 1969. They begin with "I". How can the original date of issue be determined from the letter sequence?
 I was under the impression that these black and yellow plates were fairly valued as they could be reregistered these days if they were in presented in decent condition.
 Seems to me I read a few threads on the Yenko board in the past 6-12 months that lead me to believe that if the correct hoops were jumped through this was indeed possible at that time.
 Did something change recently to reverse the policy as the posters at that time advised that they had apparently managed to do this... Or were they just blowing smoke?  Thanks - Randy
260  Camaro Research Group Discussion / Originality / Re: 68 Z ground wire on: August 08, 2007, 09:44:41 PM
This particular water pump bolt is also a stud, like the alt. bracket stud, except the wire connection is 5/16" diameter with a star ground washer.
The wire wouldn't go under the water pump bolt, as the engine was already assembled when the wire was attached.

Yep - my mistake as I realized after finally finding my AIM copy tonight page 152 /UPC12/ A5.
I exchanged many of my engine fasteners for stainless ones for a little more bling quite a while back and now obviously have a nice bright bolt holding on the ground wire where a stud, lock washer, and nut should be (left upper- most water pump fastener position) and would have originally been used. Actually the AIM shows 3 of the 4 water pump fasteners to be studs - 2 left side - one top right!
... Sorry about that - Randy
261  Camaro Research Group Discussion / Originality / Re: 68 Z ground wire on: August 08, 2007, 10:44:35 AM
Is this on another WP stud like the right side, upper that the alt bracket goes on?  Or is it just under a WP bolt?  Thansk.

On my particular car it is just under a bolt. I believe the stud s were reserved for the other side where the alternator bracket(s) were attached and the only place and reason studs were used.
I was trying to find where I had the idea I had mounted the ground strap properly. Probably (a) becasue that was where it was when I got the car and (b) where Jerry's book shows it to be mounted although and couldn't find my copy when I first responded to your post to confirm that. - Randy
262  Camaro Research Group Discussion / Originality / Re: 68 Z ground wire on: August 07, 2007, 06:38:54 AM
Does anyone know where the neg battery wire hooks to on the block of a 68 Z28?

Mine is attached to the top-most bolt - left side of the water pump looking at the engine from the front - just above the lower rad hose.... Randy
263  Camaro Research Group Discussion / General Discussion / Re: fan clutch length on: August 04, 2007, 10:40:05 PM
can't remember which dealer classic or ricks etc... that I saw offered fan clutches with different lenght shafts? or did I dream it all?  I need to get my fan deeper into the shroud by at least a half an inch to an inch

I don't know about the fan shaft itself but I have seen spacers that sit between the pulley face and the shaft itself to space out the fan somewhat. Most that I recall were made from aluminim and I'm sure could be easily cut down down to any given thickness for a specific application. Seems to me maybe Moroso or  Mr. Gasket was the brand on the packaging but its been a while since I have seen any around.
Google something or check out Jegs or Summit and see what you come up with... It really wouldn't be very hard to make something up for a .5"- 1.0" thick spacer from round bar stock that matches the flange diameter of the original shaft. Then just measure the bolt pattern and drill a set of holes accurately and get some longer bolts you're all set - Randy
264  Camaro Research Group Discussion / Mild Modifications / Re: Air Shocks on: July 21, 2007, 09:04:35 AM
A few years back, I bought a set of AC Delco air shocks for my multileaf '68.  Has anyone checked to see if these are still available?

Jeff - Ran the application on the AC Delco site and came away with a number which I gave to a local dealer parts guy here in my neck of the woods and he came up blank through GM Canada.
Can't remember what the # was and I don't have it with me right now - something like 504-508 or something - anyway it is no longer available..
Thanks anyway. I ordered some Monroe's and in a week or so should be able to see for myself if they will work... - Randy
265  Camaro Research Group Discussion / Mild Modifications / Re: Air Shocks on: July 16, 2007, 08:34:19 AM
I just checked and there is not an air shock made by Monroe that fits multi-leaf 68-9 Camaros anymore. The closest is the one for the single-leaf which doesn't make sense as it is a longer shock, and usually the multi-leaf cars need the longer shock. If your car is finished, I would remove the rear shocks that are on there now. Once you have them removed, measure from the bottom of the upper shock mount to the center of the lower mounting point on the shock plate. If that distance is equal to or longer than the compressed length of the air shock dimensions listed above, then I would say try them. Also compare the extended & compressed lengths of the shocks you removed to the dimensions above. The dimensions are so close that they should work, now don't forget to take into consideration the upper washer and bushing for the shock when measuring your car. I wish I could have helped more. BTW, the NAPA number is MA711 for the single leaf shock, which is the same for O'Reilly's, Advance, and Autozone...............RatPack...........................

Thanks for you efforts - Can't see why the single leaf variety wouldn't work - and I'll probably give them a try. The tech guy said there was some form of interference with the MA711 model but the lines always attach onto the upper half of the shock and don't come even close to the spring pack itself - so I don't know why he said that. I figure I'll try and order a set and see just how they do fit - can always return them if they don't I guess. Thx - Randy
266  Camaro Research Group Discussion / Mild Modifications / Re: Air Shocks on: July 15, 2007, 05:08:46 PM
The ones you mention sound very close - NAPA we don't have up here - was it a brand exclusive to them or was it a generic brand you ended up with like Gabriel or Monroe?
Thanks - Randy

Randy, those are made by Monroe for NAPA. I can do more verification Monday through a friend that owns the local NAPA store, but I believe Monroe supplies Pep Boys, Autozone, and Advance Auto..........RatPack..........

Rat... I would appreciate that - I ran the MA815 number given previously by Mikey and it is sourced to a Ford Lincoln model!! It may fit but isn't very close model-wise to any Camaro and may not have the proper travel or damping due to the different intended usage...
The 49374 on the box I still had in the garage is in fact a Gabriel number for some sort of Toyota wagon or something -so again ones can be found that will work but possibly just not well as I stated mine never seemed to operate that good from the get go.
I would have thought that Monroe would have other shocks intended for GM and/or other makes and models that the tech help guy would have been able to access when I called - but I guess I caught him on a bad day from the sound of it.
Appreciate any and all help with this - Randy
267  Camaro Research Group Discussion / Mild Modifications / Re: Air Shocks on: July 14, 2007, 10:01:50 AM
monroe's MA815 work

Funny that Monroe doesn't know that... do you have some in use?
Is that part number really intended for that app or is it just for another make or model of vehicle and it apdapts? If that is the case and it has specs close to what a Camaro actually needs I may be tempted to jump on some regardless since my options seem limited obviously - Thanks for all the help I have rec'd so far from everyone here - Randy
268  Camaro Research Group Discussion / Mild Modifications / Re: Air Shocks on: July 14, 2007, 09:57:02 AM
I have a set on my Z28 and you can have them when I change out for the originals ones I have.  I will look tomorrow and see what kind they are.  I think Gabriel and they do look old.
'68 My old ones are supposed to be Gabriels as well and the old box says 715sc and 49374 on it but no brand name so I wonder what they actually are and supposed to fit...
A friend went the 15 hours from here to a Fall Carlise 12-13 years ago and picked them up for me when there. I'll have to try and run those numbers to see what they were really intended for! - but they did fit although never worked that well.
Thanks for the offer - your old one's shipping would probably end up costing almost as much as new ones here if I could get some - Thanks - Randy
269  Camaro Research Group Discussion / Mild Modifications / Re: Air Shocks on: July 14, 2007, 09:38:32 AM
It would be up to you as to whether they would fit or not. The last set I bought for a multi-leaf car was about 4 years ago and they were from NAPA. I cannot believe that Monroe would quit making these.............RatPack...............

I can't either - but that was the story I got from a somewhat surly tech-guy yesterday at Monroe. About the only good help I got from him was "the height of the spring pack interferes with the air valve"... He didn't at all seem interested in trying to cross other models or similar GM lines to see if other models might have some that would work either.
The ones you mention sound very close - NAPA we don't have up here - was it a brand exclusive to them or was it a generic brand you ended up with like Gabriel or Monroe?
Thanks - Randy
270  Camaro Research Group Discussion / Mild Modifications / Air Shocks on: July 13, 2007, 06:35:05 AM
Has anyone found a set of air shocks that will fit the rear of a '68 with multi leaf springs? I tried listings and tech lines for Gabrille and Monroe and all said they had models for '68 single leaf versions - but none for the multi leaf variety - due to clearance issues???
Anyone found a set for a multi leaf application from any other supplier? Nova models apparently have some available but they appear to be different length and mounting brackets although I don't know why, as they were chassis-wise supposed to be the same from what I knew,,,  Thanks - Randy
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