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Forum: Pontiac - Street Today, 02:30 PM
Replies: 14
Views: 285
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 Today, 01:36 PM
Replies: 14
Views: 285
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 Today, 12:35 PM
Replies: 35
Views: 1,235
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 Today, 12:10 PM
Replies: 14
Views: 285
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 Today, 11:53 AM
Replies: 14
Views: 285
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 Today, 11:30 AM
Replies: 10
Views: 261
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 Today, 10:58 AM
Replies: 14
Views: 285
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 Today, 10:37 AM
Replies: 19
Views: 943
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 Today, 10:23 AM
Replies: 4
Views: 144
Posted By Skip Fix
Hope you are getting a new tank!

Hope you are getting a new tank!
Forum: 77-81 Firebird & Trans Am TECH Today, 10:18 AM
Replies: 15
Views: 386
Posted By starlightblack
1977

1977
Forum: Pontiac - Street Today, 09:54 AM
Replies: 10
Views: 261
Posted By dhcarguy
Yes, the expert Tripower guys, (Dick Boneske and...

Yes, the expert Tripower guys, (Dick Boneske and Mike Wasson among others) told me TriPower carbs can only withstand between 3 to 4 psi.

Dave
Forum: Pontiac - Street Today, 09:51 AM
Replies: 14
Views: 285
Posted By tom s
Those look like 428 pistons.Tom

Those look like 428 pistons.Tom
Forum: Pontiac - Street Today, 09:12 AM
Replies: 4
Views: 120
Posted By J.C.you
Tire straps

Tire straps
Forum: 61-77 GTO LeMans & Tempests FOR SALE Today, 08:13 AM
Replies: 0
Views: 54
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.
...
Forum: THE LOBBY Today, 06:02 AM
Replies: 6,104
Views: 532,851
Posted By camerjeff
Ed That model is the closest I have seen so far!...

Ed That model is the closest I have seen so far! But the dash and rear 1/4 shape does not match IMO, but it could be a model year variation as many small manufactures bodies varied quite a bit car to...
Forum: THE LOBBY Yesterday, 09:14 PM
Replies: 14
Views: 298
Posted By keith k
You don't see too many 68 GTOs with Rally I...

You don't see too many 68 GTOs with Rally I wheels....
Forum: THE LOBBY Yesterday, 08:31 PM
Replies: 14
Views: 298
Posted By 71GP76TA
$50,000 based on the provided picture and...

$50,000 based on the provided picture and description.
Forum: THE LOBBY Yesterday, 07:53 PM
Replies: 14
Views: 298
Posted By b-man
Until you see it in person assume it’s rusty. ...

Until you see it in person assume it’s rusty.

Without inspection in person there’s no way to determine the value.
Forum: Collectibles FOR SALE Yesterday, 07:11 PM
Replies: 1
Views: 59
Posted By burd
Firestone gold line Tire Ashtray

Glass ashtray in a rubber Firestone Tire, Gold line tire, black wall on reverse, glass tray has MARK OF QUALITY molded in it. $40 nice for stogies in the garage, mint.
Plus ship or free pick up...
Forum: Pontiac - Street Yesterday, 04:12 PM
Replies: 10
Views: 261
Posted By Schurkey
I'd expect that would lower volume, but not...

I'd expect that would lower volume, but not pressure. May be so slight that you'd never notice.

Pressure is set via the internal spring.
Forum: THE LOBBY Yesterday, 11:54 AM
Replies: 42
Views: 1,444
Posted By poncho-mike
I graduated college in 1982 and bought a 1982...

I graduated college in 1982 and bought a 1982 Trans Am with a factory 4-spd WS6 with a 305 carb engine. It was a dog, I think the HP rating was only about 160 hp. The factory 4-spds were pretty...
Forum: THE LOBBY Yesterday, 11:22 AM
Replies: 178
Views: 17,341
Posted By BILL BOWMAN1
——-

——-
Forum: THE LOBBY Yesterday, 11:19 AM
Replies: 178
Views: 17,341
Posted By BILL BOWMAN1
———

———
Forum: THE LOBBY Yesterday, 10:52 AM
Replies: 32
Views: 1,662
Posted By 78w72
Got this from a FB group, looks like he has a...

Got this from a FB group, looks like he has a book out now about his "ooper dooper pooper scooper stage 9 TA! LOL!
Forum: Pontiac - Street Yesterday, 10:03 AM
Replies: 17
Views: 329
Posted By i82much
just drive an old a-body with four wheel drums...

just drive an old a-body with four wheel drums and your car car will seem like it stops like an indy car.
Showing results 1 to 25 of 500
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