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Forum: Pontiac - Street Today, 04:56 PM
Replies: 29
Views: 735
Posted By Formulas
I have only spun one rod bearing in life back in...

I have only spun one rod bearing in life back in 1982 sounded like an elf in my oil pan with a 5lb sledge hammer hitting the block hard every time a certain cylinder fired, the tempo increases fast...
Forum: Pontiac - Street Today, 04:25 PM
Replies: 9
Views: 189
Posted By Formulas
one time long ago i had some funky soft cam...

one time long ago i had some funky soft cam bearings had to pry the cam out,.... levered a big screwdriver in that back area against a cam lobe to push the cam foreward and out to replace the cam...
Forum: Pontiac - Street Today, 03:54 PM
Replies: 29
Views: 735
Posted By Formulas
If i were to go street roller i would go tight...

If i were to go street roller i would go tight side of specs on crank bearings so thinner oil can be used with direct roller lifter axle oiling along with the HP. SD. oil pump elevated idle RPM ......
Forum: Pontiac - Street Today, 09:11 AM
Replies: 19
Views: 541
Posted By Formulas
Some HEI cams are more resistant to over...

Some HEI cams are more resistant to over advancing than others,

My own testing in a garage with only a timing light, some cams would reach full desired advance stop advancing for about 1500 rpm...
Forum: Pontiac - Street Yesterday, 05:05 PM
Replies: 21
Views: 461
Posted By Formulas
This

This
Forum: Pontiac - Street Yesterday, 02:38 PM
Replies: 13
Views: 278
Posted By Formulas
1969-70 350 80-85cc heads would be much better...

1969-70 350 80-85cc heads would be much better than 94cc on that engine.

as far as overheating water pump divider plate distance and seals in that area.

not knowing what you have now perhaps a...
Forum: Pontiac - Street Yesterday, 06:42 AM
Replies: 19
Views: 541
Posted By Formulas
Sorry i read over the sentence to fast where you...

Sorry i read over the sentence to fast where you implied non functioning vac adv.

dist weights and cam number? is the cam installed numbers up or down? everything moving freely?

your carb...
Forum: Pontiac - Street 06-01-2024, 07:34 PM
Replies: 19
Views: 541
Posted By Formulas
if you had vac adv plugged in when you checked...

if you had vac adv plugged in when you checked for the 37 thats your problem .

the whole purpose of springs out timing check is to set total timing with full mech adv only and you dont have to rev...
Forum: Pontiac - Street 06-01-2024, 09:56 AM
Replies: 36
Views: 1,247
Posted By Formulas
Idle quality is usually near one of the first...

Idle quality is usually near one of the first things that is worked out after cam break in
its natural to float back and forth between initial and total timing idle speed and mixture until...
Forum: Pontiac - Street 05-30-2024, 05:07 PM
Replies: 21
Views: 600
Posted By Formulas
I have 6 of those types of seals never thought...

I have 6 of those types of seals never thought about it before but i remember the rubber being alot thinner like a heavy paint vrs a thicker rubber like you have

its a hammer in tight fit i can...
Forum: Pontiac - Race 05-29-2024, 10:58 PM
Replies: 16
Views: 548
Posted By Formulas
If 60's are sweet driver claims lazy top end, ...

If 60's are sweet driver claims lazy top end, could be fuel delivery as well, no mention of the components there
Forum: Pontiac - Street 05-28-2024, 04:14 PM
Replies: 13
Views: 714
Posted By Formulas
strong valve springs and weak stock pushrods? ...

strong valve springs and weak stock pushrods?

the only thing worse that stock Pontiac connecting rods are the pushrods they are like a fuse in a electrical circuit slightest hint of abuse and...
Forum: Pontiac - Street 05-26-2024, 09:47 AM
Replies: 12
Views: 511
Posted By Formulas
Technically a plenum is the area beneath the carb...

Technically a plenum is the area beneath the carb and before the intake runners, But any common area consisting of multiple flow paths that is soon to be directed into a certain dedicated path is...
Forum: Pontiac - Street 05-26-2024, 08:36 AM
Replies: 5
Views: 309
Posted By Formulas
The TH400 vacuum sensing / operated light...

The TH400 vacuum sensing / operated light throttle upshifts with the stock modulator are pretty care free but after your built and driving and want a different experience you can opt for the...
Forum: Pontiac - Street 05-25-2024, 01:59 PM
Replies: 12
Views: 511
Posted By Formulas
don't recomend blowing the K&N filter or use high...

don't recomend blowing the K&N filter or use high pressure water, can poke holes in the gauze reducing filtering allowing dirt to pass...

all this movement may be because the open top element...
Forum: Pontiac - Street 05-23-2024, 01:58 PM
Replies: 171
Views: 10,668
Posted By Formulas
I knew there was something wrong outside the list...

I knew there was something wrong outside the list of parts

a 455 with a little bit of a cam in it good compression and 3.73 gears should bring a smile at some point..
Forum: Pontiac - Street 05-23-2024, 01:44 PM
Replies: 22
Views: 812
Posted By Formulas
Every 557 engine i tore down was clapped out in...

Every 557 engine i tore down was clapped out in stock form, at first i never paid attention to block numbers after 1970 until i keept finding only 557 blocks then it clicked, i keept seeing a...
Forum: Tri-Power Tech 05-20-2024, 08:17 AM
Replies: 23
Views: 790
Posted By Formulas
I forget if there is a tab on the float to...

I forget if there is a tab on the float to control drop distance,

perhaps after sitting for a period the bowl dries up float drops down far enough to cock something and stick then after running...
Forum: Pontiac - Street 05-17-2024, 02:20 PM
Replies: 36
Views: 1,297
Posted By Formulas
Oil isn't born with additives thats why they are...

Oil isn't born with additives thats why they are added,

Be interesting to know the circumstances in which these additives are added IE the environment in which this magic takes place. Is this...
Forum: Pontiac - Street 05-13-2024, 12:27 PM
Replies: 82
Views: 2,980
Posted By Formulas
The invisible boogie man, Can't be proven or...

The invisible boogie man, Can't be proven or disproven.
Forum: Pontiac - Street 05-10-2024, 05:20 PM
Replies: 32
Views: 1,770
Posted By Formulas
For building a good cruiser engine you want low...

For building a good cruiser engine you want low end torque.

Compression builds torque at every rotation of the crank if it was my goal to build a cruiser 400 i would use 85ish CC 1970 and prior...
Forum: 70-73 Firebird & TA TECH 05-09-2024, 07:26 PM
Replies: 7
Views: 403
Posted By Formulas
Core support ?

Core support ?
Forum: 70-73 Firebird & TA TECH 05-09-2024, 04:02 PM
Replies: 7
Views: 403
Posted By Formulas
I don't believe there is charcoal in the rear...

I don't believe there is charcoal in the rear canister i believe its a over engineered attempt at vapor liquid seperation so only vapors make it to the typical round canister under the hood

Is...
Forum: Pontiac - Street 05-04-2024, 01:51 PM
Replies: 20
Views: 1,197
Posted By Formulas
It is hard to get good work on blocks, I one...

It is hard to get good work on blocks,

I one time in about 1982 built a 1970 XF 455 into a 440 got the block align honed just to make sure it was perfect, somehow burnt a rear main bearing...
Forum: Pontiac - Race 04-30-2024, 04:11 PM
Replies: 25
Views: 1,244
Posted By Formulas
In this case wouldn't it require an angle mill ?...

In this case wouldn't it require an angle mill ? Just adding or removing gasket thickness moves the intake up or down.

stated problem is less clamp load on port bottom as in incorrect angle or...
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