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Forum: Pontiac - Street 02-05-2022, 03:45 PM
Replies: 48
Views: 3,576
Posted By pastry_chef
Very curious on valve sizes they will use. ...

Very curious on valve sizes they will use.

I'd guess HP peak around 7000 RPM with that cam.
Agree with BES comment about .800 intake valve lift min. My stuff has .794 and .808 for 7000 RPM...
Forum: Pontiac - Street 01-01-2022, 08:15 PM
Replies: 76
Views: 10,573
Posted By pastry_chef
...

...
Forum: Pontiac - Race 01-01-2022, 09:21 AM
Replies: 20
Views: 4,339
Posted By pastry_chef
A good test with light checking valve springs...

A good test with light checking valve springs would be to measure how far the exhaust (and intake) valves can drop till they touch the piston when at TDC and also 10 degrees before TDC. With finger...
Forum: Pontiac - Street 12-29-2021, 01:06 PM
Replies: 4
Views: 909
Posted By pastry_chef
https://www.speed-talk.com/forum/viewtopic.php?t=2...

https://www.speed-talk.com/forum/viewtopic.php?t=28413
Forum: Pontiac - Street 12-27-2021, 09:32 PM
Replies: 4
Views: 909
Posted By pastry_chef
Article. ...

Article.
https://www.onallcylinders.com/2017/11/24/ask-away-with-jeff-smith-how-to-measure-accurately-for-a-shorter-timing-chain/
Forum: Pontiac - Street 12-27-2021, 08:19 PM
Replies: 39
Views: 4,886
Posted By pastry_chef
The smallest Comp High Energy lobe 5224 is 256 @...

The smallest Comp High Energy lobe 5224 is 256 @ .003

From Harold in Sept 2009,
- duration at .004", where the SAE has decided that hydraulic durations begin and end.


High Energy 5200 is...
Forum: Pontiac - Street 12-26-2021, 11:18 PM
Replies: 39
Views: 4,886
Posted By pastry_chef
Having those would be nice. :) For many...

Having those would be nice. :)
For many historical engine cam lobes.

Blessed with a large lotto win,, I'd be inclined to buy up and scan nearly everything I could get. GM, Mopar and Ford.

I...
Forum: Pontiac - Street 12-26-2021, 09:30 PM
Replies: 27
Views: 5,354
Posted By pastry_chef
I guess many don't any great local sources.

I guess many don't any great local sources.
Forum: Pontiac - Street 12-25-2021, 08:32 PM
Replies: 39
Views: 4,886
Posted By pastry_chef
Even a 350 wants a larger cam for performance. ...

Even a 350 wants a larger cam for performance. Dynomation info here, it had headers.



Stock low compression 350 with a cam.
https://www.youtube.com/watch?v=m9dSIUFWNpg
Crane Cam 216/216...
Forum: Pontiac - Race 12-25-2021, 08:22 PM
Replies: 10
Views: 1,883
Posted By pastry_chef
I saved this back in 2003.

I saved this back in 2003.
Forum: Pontiac - Street 12-25-2021, 06:49 PM
Replies: 87
Views: 11,162
Posted By pastry_chef
Darby's Jones cam was almost the same, he often...

Darby's Jones cam was almost the same, he often ran 10.0 with his Eheads - his car was a bit lighter.

I'd be thinking if your trans is healthy.. converter crappy?
Benefit to head or intake...
Forum: Pontiac - Street 12-25-2021, 06:31 PM
Replies: 7
Views: 1,373
Posted By pastry_chef
Street use with low compression, stock converter,...

Street use with low compression, stock converter, 2 series highway gear. limited RPM / HP.

455 @ 4300 RPM target.

https://i.imgur.com/BkFOxaG.png
Forum: Pontiac - Race 12-25-2021, 05:58 PM
Replies: 31
Views: 6,338
Posted By pastry_chef
Part of the limit will depend on how efficient...

Part of the limit will depend on how efficient the engine uses fuel to make power.

A general mid-level would be .500 BSFC.
BSFC is pounds of fuel per HP per hour.

Engine at 450 HP * .5 =...
Forum: Pontiac - Street 12-25-2021, 12:00 AM
Replies: 39
Views: 4,886
Posted By pastry_chef
A source has this. 1977 Manual Transmission...

A source has this.

1977 Manual Transmission W72 Camshaft Specifications
Part # 549431

Intake Duration 274 Degrees
Open 21 Degrees B.T.D.C
Close 73 Degrees A.B.D.C.
Valve Lift .364
Intake...
Forum: Pontiac - Street 12-24-2021, 11:49 PM
Replies: 87
Views: 11,162
Posted By pastry_chef
https://forums.maxperformanceinc.com/forums/showth...

https://forums.maxperformanceinc.com/forums/showthread.php?t=850003

Car is pretty heavy but it will be interesting if you resolve the mystery bottleneck in that combination. You changed a number...
Forum: Pontiac - Street 12-24-2021, 05:18 PM
Replies: 87
Views: 11,162
Posted By pastry_chef
:) I need to find that podcast with Darin...

:)

I need to find that podcast with Darin Morgan... he said if you gasket match, toss the heads in the trash you just destroyed them!
Forum: Pontiac - Street 12-24-2021, 04:56 PM
Replies: 87
Views: 11,162
Posted By pastry_chef
Tons of information in that article you shared...

Tons of information in that article you shared there Steve. Long read but very worth it.

Interesting about "proper" amount of overlap.. :)
Forum: Pontiac - Street 12-24-2021, 04:35 PM
Replies: 87
Views: 11,162
Posted By pastry_chef
Probably true, not many others out there, slim...

Probably true, not many others out there, slim picking.

This Vizard book is a great one. May have SBC in the title but much info is applicable to other brands.

How to Build and Modify...
Forum: Pontiac - Street 12-24-2021, 03:29 PM
Replies: 87
Views: 11,162
Posted By pastry_chef
I disagree with that blanket statement. The...

I disagree with that blanket statement.

The problem with that is.. if you increase the valve lift and the engine responds with a positive increase in mass flow, the pressure differential at the...
Forum: Pontiac - Race 12-23-2021, 07:22 PM
Replies: 40
Views: 10,738
Posted By pastry_chef
Brent is a very experienced builder across many...

Brent is a very experienced builder across many brands, some did not have an open mind to information he shared. Brent left out of frustration but should not have been locked out.

I suspect many...
Forum: Pontiac - Street 12-23-2021, 10:56 AM
Replies: 87
Views: 11,162
Posted By pastry_chef
I can tell you concerning E-heads.. On a 4.185...

I can tell you concerning E-heads.. On a 4.185 bore, SD Dave insisted that 2.19 intake valve was better than 2.11
Forum: Pontiac - Street 12-14-2021, 06:44 PM
Replies: 17
Views: 2,950
Posted By pastry_chef
The old Comp 1332-16 worked fine with 670 Iron...

The old Comp 1332-16 worked fine with 670 Iron and E-heads.
Buddy called Comp, they basically said. "we can't say they will fit" but they wouldn't deny it either.

Thousands of street miles on...
Forum: Pontiac - Race 12-03-2021, 01:15 PM
Replies: 13
Views: 2,299
Posted By pastry_chef
Jesel tool ...

Jesel tool

https://www.summitracing.com/search/part-type/pushrod-length-checkers?N=brand%3Ajesel
Forum: Pontiac - Street 12-01-2021, 03:43 PM
Replies: 241
Views: 26,601
Posted By pastry_chef
Get a piece of the LS action, retire faster. ...

Get a piece of the LS action, retire faster.

Butler's understand -- https://butler-ls.com
Forum: Pontiac - Street 12-01-2021, 03:38 PM
Replies: 241
Views: 26,601
Posted By pastry_chef
Tom and I don't always agree but he can sure see...

Tom and I don't always agree but he can sure see when the outstanding performance is overwhelming.
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