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Forum: 67-69 Firebird TECH Today, 09:22 AM
Replies: 3
Views: 68
Posted By rwfisher
No chrome bezel on Trans Am.

No chrome bezel on Trans Am.
Forum: 67-69 Firebird TECH Today, 09:06 AM
Replies: 3
Views: 68
Posted By necdb3
Not on T/A's

Not on T/A's
Forum: Pontiac - Street Today, 06:41 AM
Replies: 11
Views: 352
Posted By dhcarguy
Interesting, When I get a chance, I will run my...

Interesting, When I get a chance, I will run my car at full throttle and let you how it does. Hate to think I did this for nothing
Forum: THE LOBBY Today, 12:19 AM
Replies: 472
Views: 34,535
Posted By 65 Lamnas
Got the Q-jet back together after refinishing....

Got the Q-jet back together after refinishing. Made a deal for a HSD intake.....not sure yet what to do with it.....it's excellent....brand new even.....no box but obviously never used.

Going to...
Forum: 66-67 GTO Tempest & LeMans TECH Yesterday, 11:34 PM
Replies: 141
Views: 7,046
Posted By Tedd930
Drivetrain back in car need one more suggestion

Hopefully Mr Barron sees this this ! My engine is back in and the mechanical work is complete
Except replacing the exhaust system I obviously want to keep it factory style .. so just a few...
Forum: THE LOBBY Yesterday, 11:23 PM
Replies: 472
Views: 34,535
Posted By 67drake
That was AFTER a lecture on how bad detonation is...

That was AFTER a lecture on how bad detonation is for an engine. I was 16 once too ya know! :)
Told him to keep his heavy foot out of it. The GTO is set up for beating on, the LeMans with the stock...
Forum: THE LOBBY Yesterday, 11:04 PM
Replies: 472
Views: 34,535
Posted By kingbuzzo
Great reward dad 👌

Great reward dad 👌
Forum: THE LOBBY Yesterday, 09:44 PM
Replies: 472
Views: 34,535
Posted By 67drake
Finally got one of the Pontiac’s out! Got my...

Finally got one of the Pontiac’s out!
Got my Mercury that I did the engine rebuild on drivable now. So pulled it out and swapped positions in the garage with the ‘63 LeMans.
Lemans is running...
Forum: 70-73 Firebird & TA TECH Yesterday, 09:20 PM
Replies: 18
Views: 1,007
Posted By 70GS455
My conversion will allow your tach to operate...

My conversion will allow your tach to operate with only one wire and will be compatible with points, HEI, MSD box with the dedicated tach wire, or any points conversion ignition that is not multi...
Forum: 77-81 Firebird & Trans Am TECH Yesterday, 07:35 PM
Replies: 9
Views: 626
Posted By KSZR
Now my check engine light is back on and idle is...

Now my check engine light is back on and idle is weird. Need to pull the code.
Forum: Pontiac - Street Yesterday, 04:49 PM
Replies: 6
Views: 251
Posted By Formulajones
I figure anything you can do to help the...

I figure anything you can do to help the combustion process is a good thing.
I've never dyno'd the change myself so can't comment, I just do it for the simple reason of trying to get the spark out...
Forum: Pontiac - Street Yesterday, 02:30 PM
Replies: 18
Views: 475
Posted By steve25
I am trying to find my notes from 25 years ago ...

I am trying to find my notes from 25 years ago in regards to the valve to piston clearance deal, but here’s what I recall off of the top of my head.
Using 428 pistons in a 421 build with its...
Forum: Pontiac - Street Yesterday, 01:36 PM
Replies: 18
Views: 475
Posted By b-man
Not really because the 421 block has a pretty...

Not really because the 421 block has a pretty robust casting compared to the 389s. However that much overbore kind of diminishes the value to a certain extent. When I bought my 421 it was standard...
Forum: Pontiac - Street Yesterday, 12:35 PM
Replies: 35
Views: 1,291
Posted By track73
It works great I used a Ford G switch to shut it...

It works great I used a Ford G switch to shut it off incase of an accident. I only had one problem and that was some varnish got into the small jet into the aluminum container after a winter...
Forum: Pontiac - Street Yesterday, 12:10 PM
Replies: 18
Views: 475
Posted By b-man
Absolutely not 421 pistons. The valve reliefs are...

Absolutely not 421 pistons. The valve reliefs are completely different on a 421.

The valve reliefs and dish shown are what forged 428 replacement TRW/Sealed Power 12cc pistons all look like.
...
Forum: Pontiac - Street Yesterday, 11:53 AM
Replies: 18
Views: 475
Posted By b-man
Standard bore size is 4.09375” for the 421. ...

Standard bore size is 4.09375” for the 421.

4.120” is standard bore for the 428.

4.160” is +.040” for the 428 pistons so you’re poking that 421 .06625” over which seems excessive unless the...
Forum: Pontiac - Street Yesterday, 11:30 AM
Replies: 11
Views: 352
Posted By steve25
With only 3 psi to feed even just one Carb no...

With only 3 psi to feed even just one Carb no less 3 would not run the motor to full throttle and expect nothing less then the motor falling on its face within 4 seconds.or by the time you get...
Forum: Pontiac - Street Yesterday, 10:58 AM
Replies: 18
Views: 475
Posted By John Milner
The pin height will be the same. You would just...

The pin height will be the same. You would just have to be careful about running much lift if you used the 76 heads as the valve angles do not match up with the valve reliefs in the 428 pistons. I...
Forum: Pontiac - Race Yesterday, 10:37 AM
Replies: 21
Views: 1,145
Posted By Jim Robertson
Very nice results at a very mild boost number. ...

Very nice results at a very mild boost number. Congrats to Scott and Don S. on a super cool build using some very special custom pieces.
Not sure how many on here remember or were at Norwalk a...
Forum: Pontiac - Street Yesterday, 10:23 AM
Replies: 5
Views: 181
Posted By Skip Fix
Hope you are getting a new tank!

Hope you are getting a new tank!
Forum: 70-73 Firebird & TA TECH Yesterday, 10:18 AM
Replies: 18
Views: 1,007
Posted By MDSHARK81
Redline Gauge works in Santa Clarita, California....

Redline Gauge works in Santa Clarita, California. Got it. Thank You.
Forum: 77-81 Firebird & Trans Am TECH Yesterday, 10:18 AM
Replies: 15
Views: 404
Posted By starlightblack
1977

1977
Forum: Pontiac - Street Yesterday, 09:51 AM
Replies: 18
Views: 475
Posted By tom s
Those look like 428 pistons.Tom

Those look like 428 pistons.Tom
Forum: Pontiac - Street Yesterday, 09:12 AM
Replies: 4
Views: 160
Posted By J.C.you
Tire straps

Tire straps
Forum: 61-77 GTO LeMans & Tempests FOR SALE Yesterday, 08:13 AM
Replies: 0
Views: 94
Posted By Scarebird
1971 Lemans Sport convertible, Gen V 5.3 w/TKX

This car is a recently finished frame-off, resprayed in Lucernes Blue and all metalwork/paint professionally done. Piant is excellent - no scratches or dents.
...
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