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Forum: Pontiac - Street 02-11-2024, 01:32 PM
Replies: 398
Views: 70,477
Posted By Stan65
Singleton is correct, most cams have the top of...

Singleton is correct, most cams have the top of the lobe (max lift) the same height from the cam center line. This is roughly .010” less then the journal diameter. This means no matter what lift cam...
Forum: Pontiac - Street 02-11-2024, 01:07 PM
Replies: 398
Views: 70,477
Posted By Singleton
I don't have the answer, but from another thread...

I don't have the answer, but from another thread from someone that is using them, "To use the HT2148 lifters, cam base circle must be at least 1.135” diameter".

If that is the case, anything less...
Forum: Pontiac - Street 02-11-2024, 11:24 AM
Replies: 398
Views: 70,477
Posted By Stan65
I’m still working that out for options, but the...

I’m still working that out for options, but the fallback will be the modified ford spider.
Forum: Pontiac - Street 02-11-2024, 08:29 AM
Replies: 398
Views: 70,477
Posted By Stan65
Here’s a picture of the bones on cylinder’s 7 and...

Here’s a picture of the bones on cylinder’s 7 and 8. I had to modify these as I expected because of the difference in the casting in these locations, but they fit and function as expected.

Not...
Forum: Pontiac - Street 02-09-2024, 02:09 PM
Replies: 398
Views: 70,477
Posted By tempest1964
Stan, let me know when you are ready to produce...

Stan, let me know when you are ready to produce these. Thanks again.
Tony
Forum: Pontiac - Street 02-09-2024, 01:02 PM
Replies: 398
Views: 70,477
Posted By Stan65
Yes sir. Notch is for casting clearance. Will...

Yes sir. Notch is for casting clearance. Will probably have to grind on the rear passenger bone for additional clearance. Will start test fitting these hopefully this weekend. There is a counter bore...
Forum: Pontiac - Street 02-09-2024, 12:39 PM
Replies: 398
Views: 70,477
Posted By tempest1964
Those look nice! Correct spacing for Pontiac's....

Those look nice! Correct spacing for Pontiac's. That notch, for casting clearance? I like the fully enclosed much better than the open ended Ford dogbones. Are these hardened? If not, just curious,...
Forum: Pontiac - Street 02-09-2024, 12:25 PM
Replies: 398
Views: 70,477
Posted By Stan65
So after a long wait I have the prototype dog...

So after a long wait I have the prototype dog bones made. Hopefully in a few weeks I’ll have more info. Not sure what costs will be if I go forward with mass producing some. There are definitely...
Forum: Pontiac - Street 12-03-2023, 07:49 PM
Replies: 48
Views: 1,811
Posted By Dragncar
AEM has multiple NA systems. The page would not...

AEM has multiple NA systems. The page would not load earlier but just loaded for some reason.

https://www.aemelectronics.com/products/water_methanol/na_high_compression/
Forum: Pontiac - Street 12-03-2023, 07:45 PM
Replies: 48
Views: 1,811
Posted By Gach
They do make 120 Proof Vodka..LOL just carry gal...

They do make 120 Proof Vodka..LOL just carry gal of distilled water and a fifth of vodka. Its funny with todays marketing they can sell to allot of still wet behind the ears. It did work pretty good...
Forum: Pontiac - Street 12-03-2023, 06:54 PM
Replies: 48
Views: 1,811
Posted By Dragncar
Water injection today is not the same as the old...

Water injection today is not the same as the old Edelbrock Vari-Injections. Technology always moves forward.
I doubt the folks running these modern water-meth injection are saying "don't waste your...
Forum: Pontiac - Street 12-03-2023, 03:40 PM
Replies: 48
Views: 1,811
Posted By Gach
Very good plan.

Very good plan.
Forum: Pontiac - Street 12-03-2023, 03:14 PM
Replies: 48
Views: 1,811
Posted By Gach
Ok so spill the beans, whats your plans on moving...

Ok so spill the beans, whats your plans on moving forward. ?
Forum: Pontiac - Street 12-03-2023, 12:36 PM
Replies: 48
Views: 1,811
Posted By HWYSTR455
Yeah, I tried it, didn't do squat. Now meth may...

Yeah, I tried it, didn't do squat. Now meth may work, but dunno, haven't tried it, but know some of the GN guys have had success.

As for cams, you would have to switch to a big enough one that...
Forum: Pontiac - Street 12-03-2023, 12:01 PM
Replies: 48
Views: 1,811
Posted By Gach
I’ve tried to water ejection two different...

I’ve tried to water ejection two different applications, don’t waste your money. Or should I say flip a coin.
Forum: Pontiac - Street 12-03-2023, 10:48 AM
Replies: 48
Views: 1,811
Posted By Jay S
Pontiac greatly over rated their compressions on...

Pontiac greatly over rated their compressions on all their engines. If I were you, if your interested in switching heads, get the 85cc KRE d ports. The compression would be in the upper 8s then, and...
Forum: Pontiac - Street 12-03-2023, 09:27 AM
Replies: 48
Views: 1,811
Posted By HWYSTR455
The last iron head engine I did was in the late...

The last iron head engine I did was in the late 90s, and ran that until mid-2000s or so (I've done many Pontiac engines. Many.). 400, 16 large valve heads, surface clean up, TRW pistons, .030 over....
Forum: Pontiac - Street 12-03-2023, 07:50 AM
Replies: 48
Views: 1,811
Posted By Cliff R
"428 HOs didn't have special pistons." The...

"428 HOs didn't have special pistons."

The last 428 that I built here was a 390hp version. It had special exhaust manifolds, oil filter adapter, and something different about the harmonic...
Forum: Pontiac - Street 12-03-2023, 07:42 AM
Replies: 48
Views: 1,811
Posted By Cliff R
NEVER for any reason use a thick gasket to lower...

NEVER for any reason use a thick gasket to lower compression on one of these engines for pump gas. Here I will not for any reason build one of these engines with over .040" quench. These crappy...
Forum: Pontiac - Street 12-03-2023, 07:20 AM
Replies: 19
Views: 1,103
Posted By steve25
I had a battery issue like that once where the...

I had a battery issue like that once where the hold down rotted out and learned a big lesson in grounding the motor to the body.

My battery had got thrown up on to the fender during a tight turn...
Forum: Pontiac - Street 12-03-2023, 05:04 AM
Replies: 48
Views: 1,811
Posted By 242177P
428 HOs didn't have special pistons.

428 HOs didn't have special pistons.
Forum: Pontiac - Street 12-03-2023, 02:32 AM
Replies: 48
Views: 1,811
Posted By Gach
Long story short many running 10.1 compression...

Long story short many running 10.1 compression with iron heads no issue. On pump gas. Just takes right cam.
Forum: Pontiac - Street 12-03-2023, 02:21 AM
Replies: 48
Views: 1,811
Posted By Gach
Another thing dramatic compression, should be no...

Another thing dramatic compression, should be no more the 8. I’ll bet if you run the numbers with your cam your above that. Digimatic compression is whats important. I know I know there’s a whole...
Forum: Pontiac - Street 12-03-2023, 02:10 AM
Replies: 48
Views: 1,811
Posted By Gach
Definitely by the sounds of you mixing gas...

Definitely by the sounds of you mixing gas together getting rid of the detonation your probably around 10-1 10.25. If you end up with zero deck then maybe .060 heads gasket.
Forum: Pontiac - Street 12-03-2023, 01:55 AM
Replies: 48
Views: 1,811
Posted By Gach
The other thing the cam thats in your now, was...

The other thing the cam thats in your now, was kind of for leaded gas, not gas that has 10% ethanol. In other words when gas was good gas. So from your description you’re having serious detonation....
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