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Pontiac General Discussion/Questions

Discuss or ask questions on any Maintenance, Modifications and Garage topics that don't fall into any category.

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Minor improvements...
Minor improvements...

Bonne61, August 8, 20232 yr
- 9 replies
- 699 views
Frosty

August 23, 20232 yr
Restoring my 73 firebird. Has anyone built a homemade body stand for a 1970-1973 firebird shell when i disassemble my car ? If so please send pictures.
Restoring my 73 firebird. Has anyone built a homemade body stand for a 1970-1973 firebird shell when i disassemble my car ? If so please send pictures.

John Kintonis, August 12, 20232 yr
- 0 replies
- 509 views
John Kintonis

August 12, 20232 yr
code scan
code scan

Stef, August 9, 20232 yr
- 2 replies
- 630 views
Stef

August 12, 20232 yr
1979 Pontiac Grand Prix ssj
1979 Pontiac Grand Prix ssj

James39, August 12, 20232 yr
- 3 replies
- 1.6k views
JUSTA6

August 12, 20232 yr
1971 Pontiac Firebird esprit
1971 Pontiac Firebird esprit

71 geucipi, May 3, 20233 yr
- 4 replies
- 586 views
71 geucipi

July 28, 20232 yr
Pontiac spare parts source
Pontiac spare parts source

JUSTA6, July 23, 20232 yr
- 5 replies
- 854 views
Ringo64

July 24, 20232 yr
8 Lug Aluminum Drums
8 Lug Aluminum Drums

geffrey, July 22, 20232 yr
- 2 replies
- 707 views
64 kiwi boni

July 22, 20232 yr
Manual swap
Manual swap

synk, July 16, 20232 yr
- 1 reply
- 1.3k views
Frosty

July 20, 20232 yr
Norwalk
Norwalk

wdl182, July 18, 20232 yr
- 3 replies
- 533 views
Frosty

July 19, 20232 yr
Thermostat on Pontiac sunfire
Thermostat on Pontiac sunfire

Davey Norris, July 9, 20232 yr
- 4 replies
- 602 views
Frosty

July 10, 20232 yr
My car is a 1969 Stock numbers matching Banana Yelllow 400 4bbl GTO
My car is a 1969 Stock numbers matching Banana Yelllow 400 4bbl GTO

Davros19, July 3, 20233 yr
- 7 replies
- 1k views
TWO LANE BLACK TOP

July 7, 20233 yr
Water injectooy
Water injectooy

Davros19, July 6, 20233 yr
- 0 replies
- 522 views
Davros19

July 6, 20233 yr
Need advicd
Need advicd

Davros19, July 6, 20233 yr
- 0 replies
- 452 views
Davros19

July 6, 20233 yr
Head and cam swap
Head and cam swap

Dirtybird, June 6, 20233 yr
- 3 replies
- 797 views
oldredgoat1966

June 17, 20233 yr
Epic parts fail..Show us whatch got
Epic parts fail..Show us whatch got
JUSTA6, April 11, 20224 yr
- 64 replies
- 4.1k views
JUSTA6

June 14, 20233 yr
1968 Catalina power steering pump. What bolts need to be loosened/removed?
1968 Catalina power steering pump. What bolts need to be loosened/removed?

TVStevie, June 7, 20233 yr
- 2 replies
- 689 views
64 kiwi boni

June 8, 20233 yr
Top maintenance?
Top maintenance?

TreydoggTX, May 21, 20233 yr
- 4 replies
- 829 views
Last Indian

June 3, 20233 yr
Transmission Problem HELP
Transmission Problem HELP

Dennis63, May 23, 20233 yr
- 9 replies
- 1k views
Dennis63

May 28, 20233 yr
New here
New here

Ponchopaul, May 24, 20233 yr
- 1 reply
- 388 views
Ringo64

May 24, 20233 yr
67 GTO won’t Start
67 GTO won’t Start

Scott Keet, May 15, 20233 yr
- 6 replies
- 669 views
JUSTA6

May 20, 20233 yr
My wagon is back!!!
My wagon is back!!!

dualquadpete, May 8, 20233 yr
- 24 replies
- 1.4k views
dualquadpete

May 13, 20233 yr
Proportion valve
Proportion valve

Derslayer1, May 9, 20233 yr
- 1 reply
- 563 views
64 kiwi boni

May 10, 20233 yr
1973 Grand Am Radiator support
1973 Grand Am Radiator support

Mdt78, May 8, 20233 yr
- 2 replies
- 718 views
Frosty

May 10, 20233 yr
What car is this?!?!
What car is this?!?!

LeeTX, April 2, 20233 yr
- 2 replies
- 616 views
dualquadpete

May 8, 20233 yr
Destroyed by Fire
Destroyed by Fire

Only, April 18, 20233 yr
- 13 replies
- 1.2k views
dualquadpete

May 8, 20233 yr

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July Pontiac of the Month
1. Keane165's 1970 Lemans

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Octane! Are all things equal? Does it matter?

I want to start this post with an explanation as to why so many things get perceived wrong. More than 17 years ago I was asked to write a paper detailing suspension design, myth & fact! If you ask nearly every car guy who wants a car to handle better than the factory setup & you inquire what they will do to achieve that? They will say nearly to a man, lower the car! This not only is categorically wrong, but the complete opposite! There are a few exceptions where a double wishbone is involved, but that carries a big caveat to do so & Macpherson struts have no exceptions for lowering! Yet to this very day this still dominates the mentality of those looking for a more aggressive handling car. Because those that don’t know or don’t have a clue as to how to accomplish such a task say it’s so! Then the followers who have no clue & looking for the easiest way, buy into it, because they don’t know either & have no interest in finding out the actual fact! Which takes a lot of work & math.
So how this applies to the subject of this post; OCTANE! Do you know what octane is: it’s chemical structure? Do you know how many formulations there are? Do you know how many different octane rating systems there are & why does it matter?
Recently there was a conversation about dieseling, timing & how one of the components that can cause this is octane. It won’t take you much research to find out how much damage low octane fuel & barreling down the road, you know blow out the carbon, can cause! Especially if you ignore what might be there, but can’t hear it! Can detonation occur without you knowing? Can detonation shorten the life of your engine?
To these questions there are these answers. Octane is a hydrocarbon with a chemical formula. Its purpose is to resist an engine's ability to knock or pre-ignite. It also has an impact on the power output, AKA energy output, of gasoline. There are 18 different formulations of octane. In short they are all either methylheptane, dimethylhexane, ethylhexane, trimethylheptane or diethylbutane. All of these have different formulations that give the 18 different forms.
There are three different octane rating systems. This is where the separations start to impact fuel quality. There is the RON system. This stands for research octane number. This system is the most used worldwide. Then there is the MON system. This is used by the industry such as petroleum refiners, car manufacturers, engine builders & fuel marketers. Then there is the USA! We use the AKI rating system! This is an average of the RON & the MON! This is actually superior to the RON system, I will explain why in a bit, but this is why it matters!

By Last Indian · 24 minutes ago24 min
2027 Forever Pontiac Calendar Contest Enter Here

By Jack Leslie · 38 minutes ago38 min
Roadkill Nights 2026 - August 8, 2026 - Pontiac Michigan

Need to figure out where we will be parking and go from there. Hope we can all meet up.

By JUSTA6 · 3 hours ago3 hr
2027 Forever Pontiac Calendar Contest Enter Here

My 1960 Pontiac Ventura Sport Coupe under the cherry tree.

By Rick Pumphrey · 3 hours ago3 hr
Hot Rod Power Tour 2026

That’s the spirit Fitzy!
You could even say that you could eat their shit! And die…happy!

By Frosty · 16 hours ago16 hr