Pontiac GTO Forum - View Profile: geeteeohguy

geeteeohguy geeteeohguy is offline

64-67 Expert

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Showing Visitor Messages 1 to 10 of 28
  1. geeteeohguy
    05-26-2016 06:48 PM - permalink
    Earl, you need to get a dial back timing light, run the engine at 3000 rpm, and dial back the light so that your timing indicator on the pulley is at 'O'. Then look at the light. 48 degrees is normal and is factory specified. On today's poor gas, you may need to limit the vacuum advance (by adding a bushing---I use the tip of a nylon vacuum tee slipped over the advance rod) to around a total of 38-40 degrees. If it runs fine, doesn't ping, and doesn't surge at cruise, leave it alone!
  2. gtoearl
    05-16-2016 08:44 PM - permalink
    Hi again,

    We've talked before about my 66 tri power GTO. took it to a local shop to adjust and work the center carb. I left them with their recommendation I get a new distributor as my total advance was around 48 to 50 degrees. You and BearGFR and Lars discussed rebuilding my original dist. I got nervous and ordered a new OEM distributor. I haven't installed it yet, because I don't see a limit bushing on it. should their be one? I'm still a little confused on the total advance calculation. I think you add two numbers? Right now I have 6 1/2 degrees w/o Vac initial
    19 degrees w/ vac initial . 29 or so degrees at 3000 rpm for wide open advance. The idle seems really right. idles good at 650 or so. But overall the car runs good. Concerned about the total advance being too high. Do you add the 19 and 29 to get total advance? that would put it at around 48 degrees.Thanks for all your help with my issue ! I realty appreciate ALL you guys out there.
  3. ope28
    11-02-2015 08:00 AM - permalink
    Hello. Finally back to working on my GTO. I'm putting all the vacuum lines on the car. This vacuum modulator line that I bought has me scratching my head. In one of your posts you said that you had a picture of your original line, but I can't find it. Any chance you can repost or send a pic to ope28@aol.com? Thanks!
  4. georgegervin44
    02-23-2015 01:49 PM - permalink
    Howdy! Would love your thoughts, as well as what to look for on this specific car when I look at her tomorrow.

    1967 Pontiac GTO 1967 GTO Real Deal 400 V8 2 Owner Paperwork LOOK For Sale | OldRide.com
  5. jgotzens
    01-03-2015 02:10 PM - permalink
    Been reading this thread and still a little confused. First, my 66 GTO is a 389 Tri Power with 670 heads. Right now running 93 octane (highest around other than 100 race or without an additive.) It runs good and I don't hear any detonation. But after reading GEETEEOHGUY's story maybe I'm just not hearing it. I have a drop top and it's down all the time so who knows. My flowmasters could be drowning it out. I know 670's need special attention to run on a 389 and they seem to have the right cam/piston set up since it all runs good. I haven't checked the timing myself, but the guy place I bought it from said it was close to 9 degrees rather than 6. It idles fine but does "clunk" a little when I put the His/hers shifter into t gear so it's probably can be backed down some. With all that said, I'm wondering even if everything "seems "OK" I shouldn't go to 100 octane or an additive to 93 just to be safe.
  6. rpontiacy
    09-23-2014 03:35 PM - permalink
    You must stay quite busy trying to stay up with all these questions. I have that 65 tempest custom with the 3 speed and would like to get someone to post a picture of the 65 gto 3 speed and linkage set up. Thanks. Rick
  7. geeteeohguy
    08-28-2014 08:36 PM - permalink
    The '77' is the last two digits on the '65 GTO and 421 head. I have a pair of them on my '65 GTO. The '76' heads your are talking about are big car 389 heads, with a compression rating of 10.5:1 instead of the 10.75:1 of the '77's.
  8. G t o
    08-09-2014 10:47 AM - permalink
    G t o
    Hello, have you ever came across a set of heads that have a casting # of 77 (casting code) however when I opened the valve cover the number on the inside the casting # is 9778776? Any idea what these are". Thanks in advance for your help.
  9. GTOmanjohn
    06-12-2014 11:23 PM - permalink
    Hello Geeteeoguy, I can tell you know your stuff and had to send you a message. I just purchased a 66 GTO convertible and it's burgundy. Looks like your car is also Burgundy. Any chance you can send me some photos of your car? I have a metallic red interior and a white top. My email is drwoo2@aol.com
    John / St Louis
  10. poocher
    04-26-2014 12:24 AM - permalink
    Hi Geeteeoguy! Thanks in advance for you help on the forum. You are quite knowlegeable. I need a little guidance. I purchased a 1965 GTO with a 1968 XH 400 in it. It has manual steering but I would like to convert it to power steering. How should I go about that? What parts would you recommend? Paul.

  About Me

  • About geeteeohguy
    Fresno, California
    My Car (GTO or other)
    1965 GTO hardtop 3x2/4spd Blue Charcoal/Blue; 1967 GTO convertible 400/auto Burgundy/parchment
    My Interest
    Preserving history!
    Have had GTO's for 29 years. Have had 9 GTO's, all '65thru'67's


Total Posts
Visitor Messages
General Information
  • Last Activity: 06-19-2017 04:12 PM
  • Join Date: 02-01-2008


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06:10 PM - geeteeohguy quoted Goat Roper in post VIN Tags: Unhappy camper
Only an idiot would remove the ...
10:31 AM - leeps quoted geeteeohguy in post 1969 GTO - a few questions
What is the compression on #2 c...
01:37 PM - geeteeohguy quoted 1968gto421 in post Machine shop litmus test
Like you, my brother prefers th...
12:00 PM - 1968gto421 quoted geeteeohguy in post Machine shop litmus test
No, it's not. As a final word, I...
08:21 PM - dracowizard quoted geeteeohguy in post 65 trunk pan replacement
I personally would use the OEM f...
11:23 AM - 1968gto421 quoted geeteeohguy in post Dream street motor for 64
Check out the AMEs performance y...
10:13 AM - 1968gto421 quoted geeteeohguy in post Dog Dish 64 GTO
Dog dish's look great. The 16" A...
02:18 PM - zrsteve quoted geeteeohguy in post Central Virginia Machine Service Rip - Off
You can see in the build pic tha...
06:34 AM - BearGFR quoted geeteeohguy in post Where's Bear?
Wow! They sure do things BIG in...
10:21 AM - 1968gto421 quoted geeteeohguy in post 65 GTO Headlights
Car and bulbs are 51-52 years ol...
07:34 PM - squirrelbox quoted geeteeohguy in post made difficult decision
These are CARS, guys....tire smo...
05:17 PM - PontiacJim quoted geeteeohguy in post Gear drive set
Jim, I still feel the same,, gea...
06:51 PM - Hallett Dave quoted geeteeohguy in post Road Trip
Last time I was in Williams and ...
12:57 PM - Goat Roper quoted geeteeohguy in post Road Trip
Last time I was in Williams and ...
09:22 PM - DRaSTiK68 quoted geeteeohguy in post 400 motor questions
After the Quadrajet, a Holley is...
11:01 AM - Goat Roper quoted geeteeohguy in post 67 or 71
I couldn't make my mind up betwe...
08:19 AM - BearGFR quoted geeteeohguy in post Resurrecting the Beast (was: Stuck in Wichita)
I forgot to mention this in the ...
08:01 AM - BearGFR quoted geeteeohguy in post Secondary carbs on tripower
Looks like a cracked tower to me...
02:57 PM - 67MyEra quoted geeteeohguy in post 1967 GTO Coupe
Excellent! Nothing wrong with b...
09:22 PM - 67MyEra quoted geeteeohguy in post 1967 GTO Coupe
Funny thing, a friend I know was...
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