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104571 Posts in 12237 Topics by 4718 Members
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16  Camaro Research Group Discussion / Mild Modifications / Re: New 69 Z28 302 rebuild, dizzy has rev limiter. What is the best RPM limitation? on: October 15, 2013, 07:00:47 AM
Relative question ,what are you doing with it ? Racing ,cruising with an occasional bang through the gears ?

You got it! Cruising with an occasional bang through the gears. I may run it up the strip on a drag night with my club just for fun, but not often. I'm after a little insurance against missing a clean shift/gear wherever I may be.

BTW, my bad on the spellun... Pertronix.

So as I understand it, the advice here seems to be between 6800 and 7200? It was set at 7100, although for some reason, it seems to be cutting in at 5100 right now. I am going to take a closer look as soon as I get a chance.

Great info all around, thanks folks!

Shane
17  Camaro Research Group Discussion / Mild Modifications / New 69 Z28 302 rebuild, dizzy has rev limiter. What is the best RPM limitation? on: October 14, 2013, 12:11:18 PM
I respect the fact that there are opinions regarding the use of rev limiters. However, there is one on my DZ 302 now, so I am seeking some sage advice on what it should be set to?

I recently had the engine rebuilt (original numbers). I am now at .060 over. I tried very hard to stay original on everything. However, the distributor needs work, so I replaced it with a petronics setup that looks rather stock, but includes the electronic setup and rev limiter.

What would be the ideal set point for the rev limiter?


Shane
18  Camaro Research Group Discussion / Restoration / Re: Harmonic Balancer - 1969 Z/28 on: August 02, 2013, 12:51:09 PM
You don't want the first one (the 6.1" one) - the 302 requires the heavy 8" balancer; the GM replacement most outfits sell will work fine, and will look pretty much original with the pulleys installed. The GM original is much more expensive, and has the face ribs that run all the way out to the edge of the hub.

Thanks, John and all, I'll probably go with the one from Rick's.
19  Camaro Research Group Discussion / Restoration / Re: Harmonic Balancer - 1969 Z/28 on: August 02, 2013, 12:46:36 PM

Nice option, but backordered.  Sad
20  Camaro Research Group Discussion / Restoration / Harmonic Balancer - 1969 Z/28 on: August 01, 2013, 05:40:28 PM
I'm having my engine rebuilt for my 69Z and need to decide on the harmonic balancer. This is not a concourse car, but I try to keep it as original as my budget allows with particular attention to appearance.

I am looking at these two.

http://www.jegs.com/i/Professional+Products/428/80010/10002/-1?CAWELAID=1710581559&catargetid=1784162075&cadevice=c&&cagpspn=pla&gclid=CKDWhsGn3bgCFcOe4Aod6HMAZg

http://www.rickscamaros.com/camaro-crankshaft-harmonic-balancer-302ci-1969.html

Obviously one looks more 'original' than the other. Does this make much of a difference? One is much more expensive than the other, and I am not sure just how noticeable this will be. Thoughts?
21  Camaro Research Group Discussion / General Discussion / Re: Crane XR-i points conversion question. on: August 01, 2013, 02:39:38 PM
I like the points idea. Not a big fan of electronics that can drop out on you without notice. However, it is the rev limiter I am after.
22  Camaro Research Group Discussion / General Discussion / Re: Crane XR-i points conversion question. on: July 31, 2013, 03:25:32 PM
I'm bringing this old topic back to life, simply to avoid having to go over the above again.

However, the OP did mention the rev limiter, which is my primary interest. I want to keep original appearance, and gain the safety of this ignition kits rev limiter.

Has anyone used this setup? Is the advantage worth the switch? 
23  Camaro Research Group Discussion / General Discussion / Stahl Step Headers ('69 Z28) on: July 26, 2013, 02:48:26 PM
This question is in response to an earlier statement that Jerry made. He recommended the Stahl #105 (new) step 1-5/8" to 1-3/4" step headers. Is there a reason that these are more desirable for a 1969 Z/28 than the #106 Original in 1-3/4"?

Shane
24  Camaro Research Group Discussion / Maintenance / Re: 1969 Z/28 DZ 302 overbore to .040? Piston Source? on: July 25, 2013, 12:41:07 PM

If it's the original, build it and drive it. Or, build a driver 302 motor and enjoy it anyway. Hot trick when I was growing up was to build a poor man's 301 using a 283 block bored .125 over - they usually ran really hot, but if the cores weren't shifted, they would last decently under pretty severe duty (rods and bearings were the limiting factors). Later model blocks didn't seem to suffer the earlier block's tendencies for core shifts - I've known a lot of .060 engines that ran, and continue to run, very well.

Strictly my own opinion,
Steve
 

Thanks Steve. Good advice, and I'll be sticking to the matching numbers oath, to "do no harm while enjoying the hell out of it". Smiley Going with JE Pistons and rings. Thanks folks, for all the great advice. I'm sure I'll have more questions as I put her back together over the next few weeks.

Shane
25  Camaro Research Group Discussion / Maintenance / Re: 1969 Z/28 DZ 302 overbore to .040? Piston Source? on: July 24, 2013, 10:06:07 AM
Well, got the bad news this morning that he had to go out to 0.060 anyway. I know this is not good, but can somebody share some wisdom as to what I should do at this point? This is not a trailer queen, I drive her on weekends to local shows and cruise-ins. I want to enjoy my car without ruining it for good. I don't want to put a crate engine in it. I'd rather drive a 'real' Z/28. On the other hand, If that means ruining what's left of a numbers matching '69 Z/28, I'd rather sell her to someone who will make a trailer queen. (A good home, so-to-speak.)

Pretty bummed out.
26  Camaro Research Group Discussion / Maintenance / Re: 1969 Z/28 DZ 302 overbore to .040? Piston Source? on: July 22, 2013, 04:09:14 PM
These are what I've narrowed it down to. Anyone have a setup with these?

http://www.campbellenterprises.com/chevy-302-pistons-302-piston-sets/302-chevy-pistons-wiseco-forged.php


or

http://www.jepistons.com/Products/261357.aspx

Also, how do I determine from these web sites is these are narrow or wide bands?
27  Camaro Research Group Discussion / Maintenance / Re: 1969 Z/28 DZ 302 overbore to .040? Piston Source? on: July 20, 2013, 02:01:13 PM
I agree, wholeheartedly. I didn't catch that until after I posted the link.

These seem pricey, but does anyone have experience with them?

http://www.campbellenterprises.com/chevy-302-pistons-302-piston-sets/302-chevy-pistons-wiseco-forged.php

28  Camaro Research Group Discussion / Maintenance / 1969 Z/28 DZ 302 overbore to .040? Piston Source? on: July 19, 2013, 10:20:46 AM
My DZ 302 is out and apart for the first time since I got it. The block is already at .030 and needs to go a little further. I'd like very much to go no further than .040 is possible, but my machinist's supplier seems to only have .060 for the 302. This is my first rebuild, and am depending heavily on my mechanics knowledge. He is a great guy, running an old school shop, and wants to help me keep her as true as possible. He asked that I check with you folks on a supplier to see if there are .040 pistons available? I'm looking for recommended manufacturers and item #'s if possible.

I found some via Ricks/Eckler's. http://www.rickscamaros.com/camaro-piston-set-302ci-11-1-0-040-over-high-performance-1967-1969.html Just not sure if these are recommended.

Thanks!
29  Camaro Research Group Discussion / Originality / Re: hugger orange z with green interior on: July 16, 2013, 11:20:37 AM
Definately got a pumpkin vibe going there...
30  Camaro Research Group Discussion / Originality / Re: Eaton Fan Clutch, but is it right? on: July 12, 2013, 07:39:12 PM
Front looks good... lets see the back side?

I haven't removed the fan yet, but here are a few views. The last one makes me doubt. I don't recall seeing that Eaton impressed into the metal in previus examples.







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