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Forum: 74-76 Firebird & TA TECH 08-11-2021, 06:05 PM
Replies: 2
Views: 483
Posted By 455-4+1
Awesome, thank you 😎

Awesome, thank you 😎
Forum: 74-76 Firebird & TA TECH 08-11-2021, 02:57 AM
Replies: 2
Views: 483
Posted By 455-4+1
76 455 TA pulley numbers

Hi there

Does anyone have a reference for the correct pulley numbers for 76 455 TA (non AC)

I have a few different ones, but there are quite a few diameters and wouldn't mind using the factory...
Forum: Suspension TECH 06-30-2021, 04:39 PM
Replies: 3
Views: 653
Posted By 455-4+1
Thanks guys, I found a listing for 76, looks like...

Thanks guys, I found a listing for 76, looks like 4 leaf with 2x rates, (126 and 175 lb) I will check out what I have on hand.
Has huge front roll bar and factory TA one for rear, dont have...
Forum: Suspension TECH 06-29-2021, 06:53 PM
Replies: 3
Views: 653
Posted By 455-4+1
76 TA 455 rear leaf spring

Does anyone know what the correct leaf spring would be for 455 TA.
I have a set of 4 leaf, and a set of 5 leaf, both looks factory with the plastic isolators and wrap clamps etc.

Ride height...
Forum: Pontiac - Street 06-28-2021, 07:43 AM
Replies: 35
Views: 1,337
Posted By 455-4+1
Are your factory rockers new or used and can you...

Are your factory rockers new or used and can you post up a pic of the contact face on them.
Would be interested to see the diff in radius of the contact area on the stamped rocker, Vs the radius of...
Forum: Pontiac - Street 06-24-2021, 12:43 AM
Replies: 30
Views: 2,772
Posted By 455-4+1
Now the HC-03 specs are sorted, how about some...

Now the HC-03 specs are sorted, how about some burnout pics and vids using it for a bit of fun lol. (Great sounding cam as well !!)

Pump gas 455, 6X heads, HC-03 with 1.65 rockers and 3.73 rear...
Forum: 74-76 Firebird & TA TECH 06-22-2021, 04:05 PM
Replies: 4
Views: 819
Posted By 455-4+1
Thanks for the reply, so the PHS documents will...

Thanks for the reply, so the PHS documents will have the paint codes (excuse my ignorance, have never seen what's provided).
I have the lower code, just not the upper.
The car is not the original...
Forum: 74-76 Firebird & TA TECH 06-22-2021, 06:35 AM
Replies: 4
Views: 819
Posted By 455-4+1
76TA upper and lower paint codes

Does anyone know if the upper and lower paint codes differed on a 76 TA.
The body tag on mine is damaged, the lower shows 13L (sterling silver), but I cannot read the section for upper paint code....
Forum: Pontiac - Street 05-21-2021, 05:37 PM
Replies: 5
Views: 802
Posted By 455-4+1
Pretty cool, would be interested in the specs if...

Pretty cool, would be interested in the specs if available?
Forum: Pontiac - Street 05-18-2021, 07:15 AM
Replies: 5
Views: 802
Posted By 455-4+1
Factory bore tolerance stamps

Pulled down a few engines recently that looked to be pretty original.
On the decks were stamped letters near each bore, possibly designating tolerance post hone?.
S, T etc.
Does anyone have any...
Forum: Pontiac - Race 04-02-2021, 06:47 PM
Replies: 7
Views: 787
Posted By 455-4+1
I have run several sets from BLP, on carbs they...

I have run several sets from BLP, on carbs they have built, very nice finish, and some nice features. For hig latereral G applications the pvcr are set lower in the block in a small recess which is...
Forum: Pontiac - Street 03-04-2021, 02:48 PM
Replies: 22
Views: 2,033
Posted By 455-4+1
Not sure on HP numbers but we ran 11's at 124mph...

Not sure on HP numbers but we ran 11's at 124mph with an unported late EGR intake fitted with a 1" spacer.
Car weight was 1850kg.
At over 4000lb Wallace calculator shows nearly 600 hp but I think...
Forum: Suspension TECH 01-04-2021, 07:59 PM
Replies: 13
Views: 941
Posted By 455-4+1
Thanks for the info I will be going with...

Thanks for the info

I will be going with 17"Snowflakes so clearance shouldnt be a problem

Diff #1 is pretty much the stock 3.32 posi factory diff, so looking for a reasonably simple disc bolt...
Forum: Suspension TECH 01-04-2021, 06:49 AM
Replies: 13
Views: 941
Posted By 455-4+1
Ok found this chart Looks like 2x 40.5mm dia...

Ok found this chart
Looks like 2x 40.5mm dia pistons for front and they had 1x 45mm dia for rear.
Guessing this would be a good srsrting point for a rear caliper?
Forum: Suspension TECH 01-04-2021, 06:33 AM
Replies: 13
Views: 941
Posted By 455-4+1
Hmmmmm. Not sure on the actual effective...

Hmmmmm.

Not sure on the actual effective piston dia
At the pad facevit measures 1.575" dia past the rubber boot, but piston may be stepped down outside the bore to accommodate the boot?.
Does...
Forum: Suspension TECH 01-03-2021, 08:53 PM
Replies: 13
Views: 941
Posted By 455-4+1
Yes will be using adjustable, has stock disc /...

Yes will be using adjustable, has stock disc / drum valve at moment
Forum: Suspension TECH 01-03-2021, 04:17 PM
Replies: 13
Views: 941
Posted By 455-4+1
Rear brakes to compliment c5 13" fronts

Hi all, just picked up a new C5 13" disk setup for the front of my street TA over here in NZ. Parts are a bit gard to come by so I jumped on it.
What would be considered a good rear upgrade for the...
Forum: Pontiac - Street 12-12-2020, 04:46 PM
Replies: 106
Views: 6,887
Posted By 455-4+1
I have a set prepared by Jim Robertson, he's...

I have a set prepared by Jim Robertson, he's probably had more set of these accross his bench than anyone lol.
We were after max compression for an iron headed 400 build, (as close to 14 as we could...
Forum: Pontiac - Street 12-12-2020, 04:43 PM
Replies: 106
Views: 6,887
Posted By 455-4+1
I have a set prepared by Jim Robertson, he's...

I have a set prepared by Jim Robertson, he's probably had more set of these accross his bench than anyone lol.
Were were after max compression for an iron headed 400 build, (as close to 14 as we...
Forum: Pontiac - Race 10-18-2020, 03:35 PM
Replies: 78
Views: 6,281
Posted By 455-4+1
We were over 13.5 comp with our 408 with the iron...

We were over 13.5 comp with our 408 with the iron head. Going to be tough to do on pump gas I agree
Forum: Pontiac - Race 10-17-2020, 04:05 PM
Replies: 78
Views: 6,281
Posted By 455-4+1
Not sure why the reference to fa tory offerings?....

Not sure why the reference to fa tory offerings?. Pretty sure 772 never came out on a 428 either.
As far as Dports go, one variation of the 48 certainly has some advantages over other Dport...
Forum: Pontiac - Race 10-16-2020, 11:02 PM
Replies: 78
Views: 6,281
Posted By 455-4+1
Jim Robertson, RACE. Start with the correct 48...

Jim Robertson, RACE.
Start with the correct 48 casting (there are a few). He will point you I the right direction.
We were successfully running heads up with SB Cheby iron head offerings from...
Forum: Pontiac - Street 10-14-2020, 01:47 AM
Replies: 20
Views: 1,550
Posted By 455-4+1
Question Did they test at different acceleration rates, or...

Did they test at different acceleration rates, or just 300 rpm/sec. Would have been a prime opportunity to test at 300, 900 and 1500, then I am betting the results would gave been more varied
Forum: Pontiac - Street 10-07-2020, 03:40 PM
Replies: 20
Views: 1,550
Posted By 455-4+1
I think a really important part is being missed...

I think a really important part is being missed here when comparisons are being made on the dyno.
Unfortunately due to pretty poor processing power, and sampling rates, the industry (Superflow? )...
Forum: Pontiac - Race 09-28-2020, 05:42 AM
Replies: 6
Views: 653
Posted By 455-4+1
Do your sensors require a free air calibration?. ...

Do your sensors require a free air calibration?.
If so I would do so, and re test
Showing results 1 to 25 of 500

 
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