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Forum: Pontiac - Street 03-25-2024, 11:53 AM
Replies: 32
Views: 790
Posted By Formulas
Its easy to inspect plug colors and condition, ...

Its easy to inspect plug colors and condition, also you can figure if its systemic or a particular cylinder along with a compression check

if there is no outliers with these two things then...
Forum: Pontiac - Street 03-24-2024, 09:57 PM
Replies: 21
Views: 526
Posted By Formulas
they are fairly rigid even when roset welds are...

they are fairly rigid even when roset welds are broken but the joint will flex under power then rear wheels dont track truely straight steering the car

supporting the frame and jacking the center...
Forum: Pontiac - Race 03-24-2024, 09:46 PM
Replies: 11
Views: 300
Posted By Formulas
I have a stock rod cap that a machinest drilled...

I have a stock rod cap that a machinest drilled and installed a drill bushing in it for me for my BME rods i can loan it to you, might want to verify same size hole first i can check tomorrow
Forum: Pontiac - Street 03-24-2024, 09:21 PM
Replies: 21
Views: 526
Posted By Formulas
Are your axle tubes welded to center section? If...

Are your axle tubes welded to center section? If one let loose a car will want to swap lanes on you per my experience with a 1966 GTO

put jack stands under rear frame and floor jack center...
Forum: Pontiac - Race 03-22-2024, 06:45 PM
Replies: 8
Views: 295
Posted By Formulas
If you overfill to account for oil in passages...

If you overfill to account for oil in passages during running there will still be a period during startup that this overfill will be a negative.

its best to check oil level soon after running...
Forum: Pontiac - Race 03-22-2024, 02:25 PM
Replies: 8
Views: 295
Posted By Formulas
Its my opinion you want oil level under the tray ...

Its my opinion you want oil level under the tray

Oil is supposed to fly off the crank hit the tray once it hits the tray then it obviously stops flying around and gravity allows it to migrate...
Forum: Pontiac - Street 03-21-2024, 10:25 AM
Replies: 33
Views: 684
Posted By Formulas
The old school Holley 4bbl is rated @ 1.5?...

The old school Holley 4bbl is rated @ 1.5? pressure drop take the same base plate with a smaller venturi flow it at a higher drop 2.0 and the carb will pass the same CFM.?

These numbers do not...
Forum: Pontiac - Street 03-19-2024, 04:56 PM
Replies: 19
Views: 765
Posted By Formulas
Some years back when pick a part in SoCa. was...

Some years back when pick a part in SoCa. was full of rear wheel drive cars i very often saw cars people gave up on after putting new parts on alternators with shine and a new sticker, starter...
Forum: Pontiac - Race 03-17-2024, 04:22 PM
Replies: 25
Views: 1,273
Posted By Formulas
Is that double cut short keyway a source...

Is that double cut short keyway a source fingerprint
Forum: Pontiac - Street 03-16-2024, 07:45 PM
Replies: 34
Views: 1,191
Posted By Formulas
After running a 2800 and 2801 and a 068 cam in a...

After running a 2800 and 2801 and a 068 cam in a 350, The 2801 shouldn't be to much cam in your 400 with a stick it has more low end torque than a 068 and will have more legs than a 2800
Forum: Pontiac - Street 03-16-2024, 11:11 AM
Replies: 39
Views: 1,776
Posted By Formulas
Oil marketed for Diesel also suffered a reduction...

Oil marketed for Diesel also suffered a reduction in additives just like Automotive oils just at a later date
Forum: Performance Parts For Sale/Wanted 03-15-2024, 07:21 PM
Replies: 5
Views: 219
Posted By Formulas
My PM didn't show up in my sent/out box , i...

My PM didn't show up in my sent/out box , i wasnt even sure it sent, good luck with build.
Forum: Performance Parts For Sale/Wanted 03-14-2024, 08:41 AM
Replies: 5
Views: 219
Posted By Formulas
Sent a PM..

Sent a PM..
Forum: Performance Parts For Sale/Wanted 03-13-2024, 08:12 PM
Replies: 5
Views: 219
Posted By Formulas
if you could use 9.45 i have these sitting around...

if you could use 9.45 i have these sitting around doing nothing, bought them used changed my rocker arms didn't need these, 5 are slightly different from the others, see photos
Forum: Pontiac - Street 03-11-2024, 01:26 PM
Replies: 25
Views: 797
Posted By Formulas
750HP @ 5500 RPM is different from 750HP @ 7000...

750HP @ 5500 RPM is different from 750HP @ 7000 RPM
Drivelines S/B rated in torque

Like connecting rods that are rated for HP should be rated for RPMs with a given weight on the end
Forum: Pontiac - Street 03-06-2024, 11:47 AM
Replies: 37
Views: 1,558
Posted By Formulas
post #21 isnt real clear on sequence of events...

post #21 isnt real clear on sequence of events and


" Then started acting up. Something had changed besides the initial timing, causing the issue. "

something had changed besides the initial...
Forum: Pontiac - Street 03-06-2024, 09:32 AM
Replies: 37
Views: 1,558
Posted By Formulas
What shape is your timing chain in? Maybe it...

What shape is your timing chain in? Maybe it jumped

you can take dist cap off and use a socket on front of crank rotate engine back and forth see how much crank turns before dist. easy peasy
...
Forum: 70-73 Firebird & TA TECH 03-04-2024, 10:48 AM
Replies: 4
Views: 291
Posted By Formulas
I have 2 auto 70 Forms 1 with 80 amp alt and a 70...

I have 2 auto 70 Forms 1 with 80 amp alt and a 70 Esprit 4 speed never seen a bracket like that.

no stamped P/Ns ?
Forum: Pontiac - Street 03-03-2024, 02:04 PM
Replies: 23
Views: 831
Posted By Formulas
https://s1partscenter.com/brands/cummins/key/39440...

https://s1partscenter.com/brands/cummins/key/3944039

from the pictures and what little specs i can find .. this key seems to have minimal offset

some mercedes engines have the same dimensions...
Forum: Pontiac - Street 03-01-2024, 09:49 AM
Replies: 26
Views: 1,273
Posted By Formulas
My hypothesis, and thats all it is, of oil...

My hypothesis, and thats all it is, of oil laying in a blind hole has nothing to do with the head of the bolt area

simply put a head bolt in a blind hole and excessive amounts of oil cannot...
Forum: Pontiac - Street 02-29-2024, 12:42 PM
Replies: 26
Views: 1,273
Posted By Formulas
A possible culprit can be to much oil laying in a...

A possible culprit can be to much oil laying in a blind bolt hole
bolt goes down hydro locks on the oil then in time enough oil passes by the threads un does percieved torque

reason i would put a...
Forum: Pontiac - Street 02-28-2024, 06:26 PM
Replies: 31
Views: 1,334
Posted By Formulas
Seems like shimming the tailshaft of trans and...

Seems like shimming the tailshaft of trans and tapered leaf spring shims you could make it happier

I used these type of shims to keep the old style traction bars up off the ground and closer to...
Forum: Pontiac - Street 02-27-2024, 02:05 PM
Replies: 23
Views: 831
Posted By Formulas
My last cam degree came in spot on, new Scat...

My last cam degree came in spot on, new Scat forged crank, new Comp cams cam, new Cloyes timing set.
Checked every aspect along the way 3 different times for sanity
Forum: Pontiac - Street 02-27-2024, 09:21 AM
Replies: 15
Views: 662
Posted By Formulas
Another consideration after a 3 year cocoon ...

Another consideration after a 3 year cocoon Fuel quality.

Basically 2 ways to set holley floats not running bowl off physical measurements
or engine running bowl screws out watching fuel...
Forum: Pontiac - Street 02-26-2024, 07:32 PM
Replies: 23
Views: 831
Posted By Formulas
I have the Summit wheel of fortune, No complaints...

I have the Summit wheel of fortune, No complaints here.
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