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Forum: Pontiac - Street Today, 08:35 AM
Replies: 15
Views: 381
Posted By Steve C.
Jay would also set the 60919 up with 120 lb seat...

Jay would also set the 60919 up with 120 lb seat pressure, lower 300s spring rate. With a note that at a very high peak rpm level there could be the potential of some valve float. I highly suspect...
Forum: Pontiac - Street Yesterday, 05:55 PM
Replies: 15
Views: 381
Posted By Steve C.
The 68405 is rated at only 110 lbs at 1.700",...

The 68405 is rated at only 110 lbs at 1.700", unless the specs have been changed. That said, never trust what a catalog states. I would recommend that you test any spring with their retainer in place...
Forum: Pontiac - Street Yesterday, 04:37 PM
Replies: 15
Views: 381
Posted By Steve C.
Do your homework regarding the 68405 spring...

Do your homework regarding the 68405 spring installed at 1.700" and the low spring pressure !

In addition note the amount of distance from coil bind at your max lift ! It is excessive !

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Forum: Pontiac - Street 05-16-2024, 10:35 AM
Replies: 20
Views: 447
Posted By Steve C.
https://butlerperformance.com/n-12872-compression-...

https://butlerperformance.com/n-12872-compression-calculator.html



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Forum: Pontiac - Street 05-15-2024, 11:42 AM
Replies: 5
Views: 256
Posted By Steve C.
I didn't read Jim Hands comment regarding the...

I didn't read Jim Hands comment regarding the tail pipe size. However if there is a fitment issue you don't lose much by reducing tailpipe size according to some internet testing. This stated....
...
Forum: Pontiac - Street 05-11-2024, 05:02 PM
Replies: 32
Views: 1,809
Posted By Steve C.
Where the temperature is being measured. ...

Where the temperature is being measured. Excellent subject.

From the internet, this is stated. But no mention of in the pan or not.....

"In a perfect world you want to keep auto trans fluid...
Forum: Pontiac - Street 05-11-2024, 11:28 AM
Replies: 32
Views: 1,809
Posted By Steve C.
Old, but a good thread. Nice pictures and...

Old, but a good thread. Nice pictures and installation.

After reading it I'll revive a subject often not touched upon, the operating temperature...

I noted this information from B&M in the link...
Forum: Pontiac - Race 05-10-2024, 11:54 AM
Replies: 11
Views: 317
Posted By Steve C.
Thank you. For interest the intake lobe...

Thank you.

For interest the intake lobe correlates to HI-TORQUE .406" ROLLER lobe number 4208 on page 88.
The exhaust lobe is similar to a HI-TECH ROLLER lobe, some are listed on page 75. ...
Forum: Pontiac - Race 05-10-2024, 11:06 AM
Replies: 11
Views: 317
Posted By Steve C.
For interest would you mind sharing the...

For interest would you mind sharing the information Comp came up with.

In particular I'd be interested in the lobe lift for both intake and exhaust.
I tried doing a cursory look at the 304 & 319...
Forum: Pontiac - Race 05-09-2024, 11:27 PM
Replies: 11
Views: 317
Posted By Steve C.
There is the name Kevin Mendenhall on that...

There is the name Kevin Mendenhall on that picture.

Could this be the same gentleman here:
https://www.bnmperformanceandmachining.com/

If so he might have more information to share.


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Forum: Pontiac - Race 05-09-2024, 10:06 PM
Replies: 11
Views: 317
Posted By Steve C.
110 LSA with 4 degrees advance ground in. ...

110 LSA with 4 degrees advance ground in.


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Forum: Pontiac - Street 05-09-2024, 02:16 PM
Replies: 17
Views: 824
Posted By Steve C.
A fwiw, for use with the OF 2.0 hydraulic roller...

A fwiw, for use with the OF 2.0 hydraulic roller cam Dave Bisschop has used the Comp Cams 26925 valve spring. It's a double spring that Comp Cams rates at 1.810" installed height with 141 lbs spring...
Forum: Pontiac - Street 05-08-2024, 10:37 PM
Replies: 17
Views: 824
Posted By Steve C.
AG is correct however based on my observations...

AG is correct however based on my observations the OF 2.0 is ordered with "B' suffix codes.

When first introduced the OF 2.0 was "Secret Squirrel" material. Dave revised version of the Old...
Forum: Pontiac - Street 04-29-2024, 12:00 PM
Replies: 37
Views: 2,386
Posted By Steve C.
Interesting videos.... ...

Interesting videos....

https://www.youtube.com/watch?v=adYrRk22GDQ

https://www.youtube.com/watch?v=cfGg15WgSEU

"A valvespring sees two times the stress of a connecting rod, the next mostly...
Forum: Pontiac - Street 04-29-2024, 11:55 AM
Replies: 37
Views: 2,386
Posted By Steve C.
Spring surge and improper distance from coil bind...

Spring surge and improper distance from coil bind can also be a factor on some occasions.


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Forum: Pontiac - Race 04-27-2024, 12:12 PM
Replies: 1
Views: 331
Posted By Steve C.
https://forums.maxperformanceinc.com/forums/showth...

https://forums.maxperformanceinc.com/forums/showthread.php?t=855412&highlight=LSM


The Moroso valve seat pressure tester will be a lower price unit.

We check new valve springs before they are...
Forum: Pontiac - Street 04-25-2024, 09:19 AM
Replies: 20
Views: 1,181
Posted By Steve C.
I agree with Tim's post regarding the long rod...

I agree with Tim's post regarding the long rod issue.

I'm of the opinion the increased popularity of the longer rod in a Pontiac situation came about with Jim Butler's involvement probably 30 or...
Forum: Pontiac - Street 04-25-2024, 08:33 AM
Replies: 58
Views: 2,519
Posted By Steve C.
ARP Head Stud Kit ...

ARP Head Stud Kit

https://arp-bolts.com/kits/arpkit-detail.php?RecordID=713

This one notes a year involved

https://arp-bolts.com/kits/arpkit-detail.php?RecordID=714
Forum: Pontiac - Street 04-24-2024, 09:29 AM
Replies: 58
Views: 2,519
Posted By Steve C.
Information on the Edelbrock link offers some...

Information on the Edelbrock link offers some notes on the subject. Personally I've always used a ARP stud kit on my heads.

https://www.edelbrock.com/pontiac-head-bolt-kit-8556.html
...
Forum: Pontiac - Street 04-24-2024, 04:05 AM
Replies: 20
Views: 1,181
Posted By Steve C.
Three links to explore..... How much...

Three links to explore.....

How much 'parasitic load' does a camshaft represent?

https://cr4.globalspec.com/thread/25338/How-much-parasitic-load-does-a-camshaft-represent

Valve Spring Power...
Forum: Pontiac - Street 04-23-2024, 06:19 PM
Replies: 20
Views: 1,181
Posted By Steve C.
Horsepower to compress the springs. That was...

Horsepower to compress the springs. That was addressed in my post #3


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Forum: Pontiac - Street 04-23-2024, 04:42 PM
Replies: 20
Views: 1,181
Posted By Steve C.
Agree, nice videos. In the first video he...

Agree, nice videos.

In the first video he mentions a way to figure out how much horsepower you can get potentially from the cylinder heads and a SuperFlow formula involving their CFM air flow. ...
Forum: Pontiac - Street 04-23-2024, 02:04 PM
Replies: 58
Views: 2,519
Posted By Steve C.
Has the age of the heads been verified ? The...

Has the age of the heads been verified ? The early heads prior to 3/15/02 used different head bolts than newer heads.


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Forum: Pontiac - Street 04-23-2024, 10:55 AM
Replies: 20
Views: 1,181
Posted By Steve C.
Regarding his point stating there is not really...

Regarding his point stating there is not really much gain when a port is maxed out in cfm air flow no matter how far you continue to open the valve it cannot flow any more air.

Regarding that, if...
Forum: Pontiac - Street 04-20-2024, 06:23 PM
Replies: 12
Views: 675
Posted By Steve C.
Further, if interested in running a street solid...

Further, if interested in running a street solid roller set up. Search for related posts by HWYSTR455, through the years he has run solid rollers on the street numerous times for the life of an...
Showing results 1 to 25 of 500
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