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103780 Posts in 12188 Topics by 4700 Members
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1  Camaro Research Group Discussion / Mild Modifications / Re: 302 with 750 double pumper on: August 05, 2010, 02:44:37 PM
Thanks to Mark; I readjusted the throttle plates to make a square in the slots, leaned out the idle screws a bit more and now it runs perfect.

Thanks for having such a great forum. Very helpful.

Rich
2  Camaro Research Group Discussion / Mild Modifications / Re: 302 with 750 double pumper on: July 26, 2010, 11:59:22 AM
Thanks Mark, I will check out the slots and the mixture screws when I have a chance. I drove it yesterday and overall it ran really good.

-Rich
3  Camaro Research Group Discussion / Mild Modifications / Re: 302 with 750 double pumper on: July 24, 2010, 02:50:51 PM
Thanks for the reply Mark. July 2nd, I purchased a Holley 750 dbl pumper with the choke horn milled off. It will flow 790+ cfm. It has high-flow 110" needle and seat assemblies, 30cc pumps, #32 squirters front and rear, and a vent baffle. The jetting is 72 up front with a 6.5 high-flow power valve. 80 in the rear with  the power valve circuit blocked. Has pink cams front and rear. I should also add that I have headers, with chambered exhaust.  I leaned out the idle screws a bit and jumped my initial timing to 18 degrees and 36 degrees total. Idles great at 900 rpms, doesn't run hot or have a gas smell, and is quite responsive. I'm working on a very slight hesitation when I instantly stomp on it, then it's, " hold on tight". A little adjusting and I should have it figured out. It's been raining ( flooding ) here every other day, so it's hard to get out and work on it. Thanks again for your detail and if I would've bought a 650, I would have used your input, for sure.

Be well, Rich

4  Camaro Research Group Discussion / Mild Modifications / Re: 302 with 750 double pumper on: June 06, 2010, 11:16:30 PM
Thanks JohnZ, that article you wrote about vacuum advance is an eye-opener for me. I've been running without it for 10 years now.  I never really understood how it worked, now, thanks to you I have a grasp of it. I can't thank you enough for your help and I can't wait to get my Z running the best it can. BTW, this car is used on the street, 99% of the time. Drag race, once every 3 or so years.  Rich
5  Camaro Research Group Discussion / Mild Modifications / Re: 302 with 750 double pumper on: June 03, 2010, 12:55:10 PM
Thanks JohnZ, I can't argue Jerry's success. Now my next question. I don't have a vacuum advance on my MSD distributor, it's mechanical. How would or could I make the 4053 carb work for me with this kind of set-up? What would I have to do with the vacuum lines, etc?

Thanks Mark, I would appreciate anything you could tell me. My carb is simply worn-out. I'm just checking my options.

Rich
6  Camaro Research Group Discussion / Mild Modifications / Re: 302 with 750 double pumper on: June 03, 2010, 02:31:46 AM
Thanks tmodel66, I just wish you were running a 302. It's a different animal. I sure like the double pumper up high on the RPMs. Maybe JohnZ has an opinion, or someone with a 302. Any opinions are welcome. Rich
7  Camaro Research Group Discussion / Mild Modifications / 302 with 750 double pumper on: June 02, 2010, 02:50:34 PM
Has anyone tried to run a holley 750 mech. secondary double pumper (#4779) on a 302? I need to replace my carburetor and I'm wondering if I should stay with the 750 double pumper or go back to the original style 4053 vacuum secondary. Engine is bored .030 over, 11.1 compression, MSD ignition, headers, and will be installing a 140 cam soon.
Have a slight hesitation with the double pumper, but really comes on strong. I would like to hear some opinions. Does anyone think the double pumper is a better carb?

Thanks, Rich

8  Camaro Research Group Discussion / General Discussion / Re: Surviving 69' Z/28's in the registry, or Data Base CRG dudes? on: January 14, 2010, 04:51:33 AM
Danny, you'll find the list under the heading (1969- Orphans). They have the updated VIN list there. Rich
9  Camaro Research Group Discussion / General Discussion / Re: RE: PBS MOTORWEEK TV on: October 15, 2009, 02:04:51 PM
You watch this episode now, on You Tube." MotorWeek S29E09 Chevrolet Camaro SS 720p HDTV x264 iBEX "
Nice Z, Jerry.
10  Camaro Research Group Discussion / Restoration / Re: Derby hubcap paint on: September 14, 2009, 10:46:13 PM
Thanks for the response Steve. Good luck with your car. Remember, Nothings finer than 69er.
11  Camaro Research Group Discussion / Restoration / Re: Derby hubcap paint on: September 13, 2009, 11:51:42 PM
Anyone have an opinion?
12  Camaro Research Group Discussion / Maintenance / Re: 69 z28 clutch pedal adjustment? on: September 08, 2009, 10:52:03 PM
That is correct to have the clutch pedal higher, it should rest on the rubber clutch stop.
13  Camaro Research Group Discussion / Restoration / Derby hubcap paint on: September 08, 2009, 10:42:30 PM
Hi there, I have some black paint missing from my Derby style hubcaps and would like to know the correct color black to use to repaint them. Also have some paint missing from my quarter panel side louvers. It looks like flat black to me but I want to be sure.
14  Camaro Research Group Discussion / General Discussion / Re: Papa Johns on: August 25, 2009, 11:36:21 PM
Great story, looks like I'll be getting a free pizza, thanks
15  Camaro Research Group Discussion / General Discussion / Re: anyone use the HAys 85-103 clutch assy for Z28? on: August 06, 2009, 09:43:05 PM
I've used a Hays 55111 disk & 51105 plate from 1980 to 2008. It finally wore out, so I put a new set in. Hopefully I can get another 28 years out of this one too. I think you can't go wrong with the 85-103. BTW, mine never chattered.
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