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Search took 0.01 seconds. Search: Posts Made By: 1969GPSJ
Forum: 69-77 Grand Prix TECH 05-23-2026, 10:45 PM
Replies: 2
Views: 720
Posted By 1969GPSJ
Apparently, that change happened after the 1970...

Apparently, that change happened after the 1970 model year since, at least for the GP, the '69 and '70 shared the same inner and outer tie rod ends based on the specifications and part numbers.
Forum: 69-77 Grand Prix TECH 05-23-2026, 08:04 PM
Replies: 2
Views: 720
Posted By 1969GPSJ
Outer tie rod ends for '69 and '70 GPs. Any reasonably priced sources?

There was a post in March about outer tie rod ends on the GPs being different from the A-body cars. This was totally unexpected to me. I really expected the GP to share all the steering parts with...
Forum: 69-77 Grand Prix TECH 05-23-2026, 07:28 PM
Replies: 2
Views: 338
Posted By 1969GPSJ
GP Outer Tie Rod Ends are apparently different from the A body cars.

I am discovering the same issue. The GP outer tie rods are vastly different from the (true) A-body cars. which is just about the only significant steering and suspension part that is really...
Forum: Pontiac - Street 08-10-2025, 08:15 PM
Replies: 16
Views: 970
Posted By 1969GPSJ
1911a1, I would suggest that your idea about the...

1911a1, I would suggest that your idea about the penny(s) and JB weld is a potential failure point. While JB Weld is very good stuff, it is not intended to withstand the heat of direct exposure to...
Forum: Pontiac - Street 08-10-2025, 08:01 PM
Replies: 16
Views: 970
Posted By 1969GPSJ
With my 62 casting number heads, many years ago,...

With my 62 casting number heads, many years ago, I used a pair of galvanized steel pieces (thicker than shim stock, but not so thick as to upset the intake manifold seal) to block off the exhaust...
Forum: Pontiac - Street 01-20-2025, 12:24 AM
Replies: 3
Views: 1,140
Posted By 1969GPSJ
Thanks Joe. Yep, I knew that the switch on the...

Thanks Joe. Yep, I knew that the switch on the column took care of both backup light and neutral safety switch functions. I also knew I would not be using the actual back drive linkage with the...
Forum: Pontiac - Street 01-19-2025, 08:23 PM
Replies: 3
Views: 1,140
Posted By 1969GPSJ
Question 1969 GP Manual trans. Replacing my muncie with a TKX - Back drive operation question.

The car is a resto-mod combination of my original SJ 4-speed car, so originality is not an issue. So I bought a TKX from American Driveline along with a hydraulic clutch system (replacing the z bar...
Forum: 69-77 Grand Prix TECH 10-16-2024, 12:06 AM
Replies: 7
Views: 2,954
Posted By 1969GPSJ
Thanks Roger1! Useful information. That is...

Thanks Roger1!

Useful information. That is one of the modern electronics based systems I am considering.
Forum: 69-77 Grand Prix TECH 10-15-2024, 05:37 PM
Replies: 7
Views: 2,954
Posted By 1969GPSJ
Thanks CP66! Good information! I am...

Thanks CP66!

Good information!

I am pretty sure that the dash itself does not require the cutting of anything to fit the average, decent 2 post GM style radio (intended to fit the rectangular...
Forum: 69-77 Grand Prix TECH 10-15-2024, 05:19 PM
Replies: 7
Views: 2,954
Posted By 1969GPSJ
Thanks, OPH! That is pretty much what I...

Thanks, OPH!
That is pretty much what I expected. It just did not make sense that there could be a fit issue for GPs vs the A body cars. The decorative dash trim pieces I have now are both...
Forum: 69-77 Grand Prix TECH 10-09-2024, 11:10 PM
Replies: 7
Views: 2,954
Posted By 1969GPSJ
'69 GP Radio options.

Just exploring options here. I have a 1969 GP that is my resto-mod project. I am trying to maintain at least the sense of originality while still adding comfort and performance improvements. I...
Forum: Pontiac - Street 12-03-2023, 03:24 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Moonshine (with a little water) or Vodka also...

Moonshine (with a little water) or Vodka also worked. :3gears::drunk::beerchug::thumbup:
Forum: Pontiac - Street 12-03-2023, 03:15 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Thumbs up Cliff again covers all of the bases! Thanks!

Thanks for the Reply Cliff! Your replies pretty much put together all of the pieces that others had mentioned, and likely helped me come up with an improved "anti knock" interim plan for my 428. ...
Forum: Pontiac - Street 12-03-2023, 02:47 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
I am betting you are right. My gut says so, but...

I am betting you are right. My gut says so, but I have no experience to confirm.

My battered old '69 shop manual (printed in 1971) implies they did - on Page 6-40 it even shows a picture of all...
Forum: Pontiac - Street 12-03-2023, 02:23 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
I used water injection on another car a number of...

I used water injection on another car a number of years ago. Edelbrock actually had a system at that time. Worked really well with 50% distilled water and 50% methanol. I just seemed to run out at...
Forum: Pontiac - Street 12-02-2023, 11:58 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Thanks for the reply HWYSTR455. I am just...

Thanks for the reply HWYSTR455. I am just looking for some up to date information on something I have not paid a whole lot of attention to in the past few years. I thought that perhaps the thicker...
Forum: Pontiac - Street 12-02-2023, 10:19 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Yep that's the plan for stage II. Right now I...

Yep that's the plan for stage II. Right now I just want to get the car together and be driveable, safe, reliable and comfortable to drive. Then I will do the engine rebuild and aluminum heads, then...
Forum: Pontiac - Street 12-02-2023, 10:08 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
The difference between the 428 10.5:1 and 10.75:1...

The difference between the 428 10.5:1 and 10.75:1 engines was a piston without a dish. The same was true for the standard GTO/Tempest 400 and RA III - all at 10.75:1 and RA IV vs the 350 HP GP...
Forum: Pontiac - Street 12-02-2023, 09:23 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Hi Gach, in my first post of the thread I...

Hi Gach, in my first post of the thread I mentioned that the heads are 16 casting big valve, screw in stud 72cc (nominally) heads. I have not had the heads off of this engine. The engine, being a...
Forum: Pontiac - Street 12-02-2023, 07:48 PM
Replies: 19
Views: 2,303
Posted By 1969GPSJ
Is your battery securely bolted down? Years ago...

Is your battery securely bolted down? Years ago a friend had a similar problem, and the battery (which at the time was not properly bolted down :doh: ) was flopping over and grounding out the...
Forum: Pontiac - Street 12-02-2023, 07:28 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Car has not been on the road for quite a while,...

Car has not been on the road for quite a while, but it was very, very octane sensitive - even with the best (non race) pump gas available, so much so that I had to dial back the timing so much (from...
Forum: Pontiac - Street 12-02-2023, 07:16 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
This specific 428 engine has not previously been...

This specific 428 engine has not previously been apart, so the finish of the head and block would be as they were when they left the factory. I may end up using the Copper gaskets from Butler or...
Forum: Pontiac - Street 12-02-2023, 06:09 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Nope, the 16 casting heads I have cc'd have been...

Nope, the 16 casting heads I have cc'd have been consistently right around 72 ccs (low end 68 ccs, high end 74 ccs, but the low end may have had been resurfaced). Pontiac was pretty good with the...
Forum: Pontiac - Street 12-02-2023, 02:45 PM
Replies: 48
Views: 6,639
Posted By 1969GPSJ
Question Another "atypical" engine question - this time about head gaskets.

:attention
So until I get aluminum heads for my 428 (16 casting, 72 cc, big valve, screw in stud heads), I have been considering using thicker Cometic head gaskets with my stock cast iron heads....
Forum: THE LOBBY 11-16-2023, 01:14 AM
Replies: 70
Views: 11,757
Posted By 1969GPSJ
Exclamation Think the car world is full of stooopid or arrogant people? Imagine working EMS.

My son is an EMT-A, on his way to being a paramedic. He had huge altruistic ideals about helping people. :doh: Working EMS almost destroyed him - his encounters with the average EMS call works...
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