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Forum: Performance Parts For Sale/Wanted 09-23-2022, 07:30 PM
Replies: 1
Views: 399
Posted By amcmike
Deal pending.

Deal pending.
Forum: Performance Parts For Sale/Wanted 09-23-2022, 07:29 PM
Replies: 5
Views: 498
Posted By amcmike
Sorry, yes just the one. Deal pending.

Sorry, yes just the one.

Deal pending.
Forum: Performance Parts For Sale/Wanted 09-18-2022, 01:15 PM
Replies: 1
Views: 399
Posted By amcmike
New Summit Competition Harmonic Damper

Still in their original boxes. Never installed or used for mock-up. Prices do not include Paypal fees or shipping. Shipping from Charleston, SC.


SUM-G6612-B Competition Harmonic Damper ...
Forum: Performance Parts For Sale/Wanted 09-18-2022, 01:00 PM
Replies: 5
Views: 498
Posted By amcmike
New Summit Adjustable Billet Double Roller Timing Chain

Still in their original boxes. Never installed or used for mock- up. Prices do not include Paypal fees or shipping. Shipping from Charleston, SC

SUM-B654275 Adjustable Billet Timing Chain...
Forum: Performance Parts For Sale/Wanted 09-18-2022, 12:51 PM
Replies: 0
Views: 286
Posted By amcmike
New Summit Cam 2802 & Lifters

Still in their original boxes. Never installed or used for mock- up. Prices do not include Paypal fees or shipping. Shipping from Charleston, SC


SUM-K2802 (Cam & Lifters) $100


See other...
Forum: EFI Tech 09-15-2022, 09:25 PM
Replies: 8
Views: 385
Posted By amcmike
Yes sorry I was not very descriptive in my haste,...

Yes sorry I was not very descriptive in my haste, but you deciphered it. It was timing-focused, since I had not read the fuel section yet However it applies there (along with Scott's mention IAT...
Forum: EFI Tech 09-15-2022, 04:57 PM
Replies: 8
Views: 385
Posted By amcmike
Great information. Some possible feedback...

Great information. Some possible feedback (hopefully I didn't miss anything). And keep in mind, I'm not a Megasquirt user so I don't know all the features.

Ch 2: Didn't see anything mentioned...
Forum: Pontiac - Street 09-14-2022, 10:02 AM
Replies: 43
Views: 2,901
Posted By amcmike
Cliff, does the "HR112" mean it's a hydraulic...

Cliff, does the "HR112" mean it's a hydraulic roller camshaft? If so, that would be a big difference comparing to a flat tappet hydraulic.
Forum: 67-69 Firebird TECH 08-25-2022, 09:14 AM
Replies: 4
Views: 412
Posted By amcmike
How old is the spare? Did you upgrade the brakes...

How old is the spare? Did you upgrade the brakes and will the 14" rim still fit? Do you run a posi, and is the spare same diameter as the Rallys?
Forum: Suspension TECH 08-25-2022, 09:09 AM
Replies: 13
Views: 811
Posted By amcmike
Other than things being out of whack, maybe they...

Other than things being out of whack, maybe they were experimenting with more negative camber and just didn't get to the other side? Or it's setup for Circle Track racing.
Forum: Suspension TECH 08-23-2022, 10:35 AM
Replies: 9
Views: 521
Posted By amcmike
Powder coating leaf springs can be done, but it...

Powder coating leaf springs can be done, but it has to be well controlled and to the lower end of typical settings to avoid affecting the spring properties; as the coating temperature is very close...
Forum: Exhaust TECH 08-01-2022, 02:49 PM
Replies: 3
Views: 479
Posted By amcmike
The 17739 is a single in/dual out that fits the...

The 17739 is a single in/dual out that fits the 2nd gen. But really meant for a y-pipe to single tube exhaust then dual outlets.
Forum: Exhaust TECH 08-01-2022, 11:46 AM
Replies: 3
Views: 479
Posted By amcmike
Not sure I'm understanding how you plan to use...

Not sure I'm understanding how you plan to use the dynomax muffler? Are you talking about using one in where the muffler sits in front of the tank, like the pypes SGF70?

The dynomax 17553 is...
Forum: Pontiac - Street 07-31-2022, 09:47 PM
Replies: 83
Views: 5,351
Posted By amcmike
Drive with the new gears first. Once you get a...

Drive with the new gears first. Once you get a feel, I think you'll want to keep the bottom end torque that the U cam is giving you hauling 4500lbs. In which case, the 2800 would probably be a...
Forum: Exhaust TECH 07-27-2022, 12:11 PM
Replies: 26
Views: 1,939
Posted By amcmike
That's an excellent point. In addition to the...

That's an excellent point. In addition to the exhaust itself, the timing of the pulses and volume of exhaust flow relative to engine speed play a role. Therefore exhaust closing point and overlap...
Forum: Pontiac - Street 07-26-2022, 08:03 AM
Replies: 83
Views: 5,351
Posted By amcmike
It's a bit complicated, but I'll try to simplify....

It's a bit complicated, but I'll try to simplify.

The GENIII passenger vehicles (Corvette, Firebird, etc.) were in the low-mid 10s with aluminum block/heads premium. The small engine trucks...
Forum: Pontiac - Street 07-25-2022, 09:19 PM
Replies: 83
Views: 5,351
Posted By amcmike
I should have said, one of the reasons. The other...

I should have said, one of the reasons. The other of course, being emissions (with the exception of particulate emissions, which is actually higher than port fuel).
Forum: Pontiac - Street 07-25-2022, 06:19 PM
Replies: 83
Views: 5,351
Posted By amcmike
Actually it is, and today's OEMs do. Modern...

Actually it is, and today's OEMs do.

Modern engines use much higher compression ratios, enabled by direct injection. The higher SCR increases efficiency even at part throttle, thus increasing...
Forum: Pontiac - Race 07-25-2022, 01:31 PM
Replies: 34
Views: 6,738
Posted By amcmike
How are these working for everyone 1-2 years...

How are these working for everyone 1-2 years later? Pretty reliable? Any issues?
Forum: Pontiac - Street 07-24-2022, 09:45 AM
Replies: 83
Views: 5,351
Posted By amcmike
Start with the gears, it'll make a huge impact.

Start with the gears, it'll make a huge impact.
Forum: 67-69 Firebird TECH 07-03-2022, 10:30 AM
Replies: 31
Views: 1,490
Posted By amcmike
Do they work with the dimmer?

Do they work with the dimmer?
Forum: Pontiac - Street 06-29-2022, 09:48 PM
Replies: 23
Views: 1,638
Posted By amcmike
Slow the centrifugal curve to be all in at...

Slow the centrifugal curve to be all in at 2700-3000rpm (you have it way too quick). Then drive it with the vacuum connected to see if you get part throttle knock. If it does, keep removing vacuum...
Forum: Pontiac - Street 06-29-2022, 07:20 PM
Replies: 23
Views: 1,638
Posted By amcmike
What's your initial timing without vacuum and @...

What's your initial timing without vacuum and @ what rpm, so we better understand the curve?
Forum: Pontiac - Street 06-27-2022, 01:55 PM
Replies: 81
Views: 2,950
Posted By amcmike
https://i.makeagif.com/media/10-26-2017/kOGyUJ.gif

https://i.makeagif.com/media/10-26-2017/kOGyUJ.gif
Forum: Pontiac - Street 06-27-2022, 11:21 AM
Replies: 95
Views: 4,806
Posted By amcmike
No Pontiac?! :D ...

No Pontiac?!
:D

https://c.tenor.com/rEIOQjLTGQ8AAAAC/greys-anatomy-miranda-bailey.gif
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