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Forum: Pontiac - Race 02-22-2024, 09:42 AM
Replies: 24
Views: 1,344
Posted By Johnny406
Clevite or Federal Mogul Bearings?

I pulled out the 463 for routine maintenance and inspection. My bearings are showing a little wear from racing and occasional nitrous use. The crank looks great but I'll measure everything today.
...
Forum: Pontiac - Race 04-09-2023, 04:52 PM
Replies: 3
Views: 662
Posted By GTO FIREHAWK JOHN
My buddy is a really great tuner and did a base...

My buddy is a really great tuner and did a base tune but once he started it we set up timing to 30’ & set up & matched that on computer, from there we took it for a drive & it just got better and...
Forum: Pontiac - Race 03-12-2023, 06:07 PM
Replies: 36
Views: 3,824
Posted By Stan Weiss
I don't what configuration this dyno is and what...

I don't what configuration this dyno is and what else MainLine sales.

https://www.youtube.com/watch?v=6KIKDSnGeZ8

Stan
Forum: Pontiac - Race 02-04-2023, 01:17 PM
Replies: 40
Views: 2,764
Posted By Steve C.
I suggest Crower has not changed but in my old...

I suggest Crower has not changed but in my old Crower catalog from 20 years ago they stated the same 68405 valve spring for all their solid flat tappet cams listed, from 240 at .050 up to 274...
Forum: Pontiac - Race 02-04-2023, 12:18 PM
Replies: 40
Views: 2,764
Posted By Jay S
I will email them to you Stan. I don’t have a GK...

I will email them to you Stan. I don’t have a GK catalog.
Forum: Pontiac - Race 02-04-2023, 12:12 PM
Replies: 40
Views: 2,764
Posted By Jay S
I don’t think any of us were expecting you had...

I don’t think any of us were expecting you had that much head flow. Appears the compression is a bit over 11. I come up with (assuming you have 1.5 rocker on the Crower) just over 60 HP switching...
Forum: Pontiac - Race 02-02-2023, 10:17 AM
Replies: 40
Views: 2,764
Posted By grandam1979
Are your times listed at the bottom with this...

Are your times listed at the bottom with this camshaft?
Forum: Pontiac - Race 02-02-2023, 09:51 AM
Replies: 40
Views: 2,764
Posted By Jay S
I have read Harold’s example on the chevelle’s...

I have read Harold’s example on the chevelle’s forum before. I have had both the profiles he mentioned. If your “going for it” on a roller you can also run a 28* intensity cam of Harold’s, and...
Forum: Pontiac - Race 02-02-2023, 09:21 AM
Replies: 40
Views: 2,764
Posted By Jay S
I don’t know how Crower rates seat timing on...

I don’t know how Crower rates seat timing on their flat tappet cams, but that Crower Flat tappet has about as slow of accelerations as you will find in a flat tappet solid cam. The info on the cam...
Forum: Pontiac - Race 02-02-2023, 01:33 AM
Replies: 40
Views: 2,764
Posted By Stan Weiss
This is a Crane / Pontiac 041 RAIV cam valve lift...

This is a Crane / Pontiac 041 RAIV cam valve lift curve with different rocker arm ratios.

The green line is with 1.75:1

The red line is with 1.65:1

The Blue line is with 1.5:1

Stan
Forum: Pontiac - Race 02-02-2023, 12:42 AM
Replies: 40
Views: 2,764
Posted By Stan Weiss
I looked at that post by Harold and say they are...

I looked at that post by Harold and say they are not similar cams.

"They were both 288/296 at .020", 255/263 at .050". The flat tappet was 166/173 at .200", .540"/.556" valve lift. The roller...
Forum: Pontiac - Race 02-01-2023, 10:02 PM
Replies: 40
Views: 2,764
Posted By Tom Vaught
Do not think that it was the Roller Cam profiles...

Do not think that it was the Roller Cam profiles that were ever really an issue.
Some say the Roller Lifter durability was due to several things and the people selling that stuff to Pontiac Guys was...
Forum: Pontiac - Race 02-01-2023, 12:35 PM
Replies: 40
Views: 2,764
Posted By nas t eh
Not trying to argue, just learn. I thought...

Not trying to argue, just learn.

I thought the advantage to a roller cam was the fast ramps that open the valve quickly to full lift and hold the valve open at full lift longer before quickly...
Forum: Pontiac - Race 02-01-2023, 09:42 AM
Replies: 40
Views: 2,764
Posted By Mr Anonymous
the lash plays a role, those duration numbers are...

the lash plays a role, those duration numbers are at zero lash I assume. So, whats the consensus on how much that lash number listed takes the actual duration down? (I've heard 6deg per 0.010")
...
Forum: Pontiac - Race 01-31-2023, 06:35 PM
Replies: 40
Views: 2,764
Posted By Tom Vaught
Cam is not that big in reality. Especially for...

Cam is not that big in reality. Especially for 467 cid based on my previous 55 years running solid lifter camshafts.
Cam lift is not large at all. I have run .620 lift cams (after lash subtracted)...
Forum: Pontiac - Race 01-31-2023, 11:16 AM
Replies: 40
Views: 2,764
Posted By 25stevem
Fact is that unless a roller cam has a special...

Fact is that unless a roller cam has a special lobe profile a solid lifter cam kicks the valves open faster which is a big plus unless your running heads that have far more flow per tenth of a inch...
Forum: Pontiac - Race 01-31-2023, 10:49 AM
Replies: 40
Views: 2,764
Posted By Scott Stoneburg
In my experience I think you are only losing...

In my experience I think you are only losing 10-15 HP if any at all.
Forum: Pontiac - Race 01-31-2023, 10:36 AM
Replies: 40
Views: 2,764
Posted By Stan Weiss
If only it was that easy. Stan

If only it was that easy.

Stan
Forum: Pontiac - Race 01-31-2023, 10:34 AM
Replies: 40
Views: 2,764
Posted By Half-Inch Stud
I think the LSA will matter, like getting a cam...

I think the LSA will matter, like getting a cam near 104 LSA, and installing for ICL or/and Exh closing, to drive either cam profile toward optimal HP results.

HYD Flat or Solid Flat is capable of...
Forum: Pontiac - Race 01-31-2023, 01:47 AM
Replies: 40
Views: 2,764
Posted By Dragncar
100+ horsepower, doubt it. Thats a lot of...

100+ horsepower, doubt it.
Thats a lot of duration for a flat tappet.
To run a roller with that much duration in a 467 takes a lot of RPM, gear and converter.
Forum: THE LOBBY 09-23-2022, 09:55 AM
Replies: 70
Views: 6,903
Posted By carbking
I have been following this thread with interest. ...

I have been following this thread with interest.

I am not convinced people, or generations of people, can be "pigeon-holed" (hopefully you youngsters understand the term ;) )

I am more of the...
Forum: Pontiac - Race 08-15-2022, 01:30 PM
Replies: 24
Views: 2,525
Posted By cgeise
I recommend you get the ring lands hard coated/...

I recommend you get the ring lands hard coated/ Anodized -- It will really help in the long run.
Forum: Pontiac - Street 08-12-2022, 04:37 PM
Replies: 85
Views: 8,303
Posted By Johnny406
It's Happening!! Tom Molnar just wrote and...

It's Happening!!

Tom Molnar just wrote and informed me that they have enough orders of the crank to make a run of them so it's going to happen. I have no idea if and how many "extras" will be made...
Forum: Pontiac - Race 08-11-2022, 09:05 PM
Replies: 24
Views: 2,525
Posted By R 70 Judge
I’m using a Northwind with a Steve Morris billet...

I’m using a Northwind with a Steve Morris billet elbow and a Wilson’s 105mm throttle body with Holley Terminator X EFI. I have thread going in the EFI tech section if you want to duplicate anything.
Forum: Pontiac - Race 08-11-2022, 08:08 PM
Replies: 24
Views: 2,525
Posted By charlie66
Keep us posted. I hope you figure it out to your...

Keep us posted. I hope you figure it out to your liking . Sounds like you have most of the stuff . Even if you used a 3.75 stroke it be killer...

Im using a 3.75 in the motor im building now .. I...
Showing results 1 to 25 of 73

 
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