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Forum: Pontiac - Street Today, 09:50 AM
Replies: 23
Views: 432
Posted By JLMounce
That makes some sense. When costs are looked...

That makes some sense.

When costs are looked at, also look at if the piston is coming with a ring pack. As an example, my DSS pistons were a bit over $800.00, but came with the rings. The...
Forum: Pontiac - Street Today, 09:41 AM
Replies: 115
Views: 13,668
Posted By JLMounce
Yes I recall we had similar build parameters. ...

Yes I recall we had similar build parameters. Nice numbers!



The car is more of a pro-touring type build, but those numbers would be fantastic! These are of course corrected numbers and I'm...
Forum: Pontiac - Street Yesterday, 10:42 PM
Replies: 23
Views: 432
Posted By JLMounce
Based on the options in the poll, I would bet...

Based on the options in the poll, I would bet there is a budget parameter here. Autotech has a good reputation for building what you need, but any custom piston isn’t necessarily going to be budget...
Forum: Pontiac - Street Yesterday, 10:39 PM
Replies: 22
Views: 371
Posted By JLMounce
Are you sure you posted the correct dynograph? ...

Are you sure you posted the correct dynograph? The hp and torque numbers at the reported rpm leads me to believe this is a diesel application, not a 488 poncho.

If this dyno is of your 488, it’s...
Forum: Pontiac - Street Yesterday, 04:51 PM
Replies: 6
Views: 207
Posted By JLMounce
Not sure exactly where you're measuring from. ...

Not sure exactly where you're measuring from. With my fitech and air cleaner (1/2" drop base, 3" element) I have a bit over 14" from the bottom of the valley pan at the distributor to the top of the...
Forum: Pontiac - Street Yesterday, 04:09 PM
Replies: 6
Views: 207
Posted By JLMounce
Looks awesome! If you can get a height...

Looks awesome! If you can get a height measurement from the highest point, I can measure it against my torker ii + Fitech setup on my 69 bird. I'd be able to give you an idea of if you're going to...
Forum: Pontiac - Street Yesterday, 03:41 PM
Replies: 115
Views: 13,668
Posted By JLMounce
Power was pretty flat between 34-36 degrees, but...

Power was pretty flat between 34-36 degrees, but absolute best power was at 36. Because they were using my billet 2 wire, it was locked out. I may see the torque come up below 4000 rpm when I put...
Forum: Pontiac - Street Yesterday, 02:20 PM
Replies: 12
Views: 206
Posted By JLMounce
Thanks this is good information. Having a 73...

Thanks this is good information. Having a 73 455, I'd love to take advantage of the full mount. Chassis Works makes a pretty slick modern tube style mount that utilizes all three mounting holes. ...
Forum: Pontiac - Street Yesterday, 12:50 PM
Replies: 12
Views: 206
Posted By JLMounce
Yeah the washers I used were grade 8 stuff that...

Yeah the washers I used were grade 8 stuff that is the same size as the harmonic balancer washer.
Forum: Pontiac - Street Yesterday, 12:47 PM
Replies: 23
Views: 432
Posted By JLMounce
Having just completed an engine build, I had an...

Having just completed an engine build, I had an idea of the piston I wanted, but ended up with a different piston because of build parameters. Depending on what parts you are using, you may be...
Forum: Pontiac - Street Yesterday, 12:36 PM
Replies: 12
Views: 206
Posted By JLMounce
What's Everyone Using for Engine Mount Shims?

Title is basically it. What is everyone using to shim their engines?

I have mighty mounts that when installed last year sat too low. The oil pan can pass the width of a piece of paper, that's...
Forum: Pontiac - Street Yesterday, 09:31 AM
Replies: 115
Views: 13,668
Posted By JLMounce
Thanks! Compression came out to right...

Thanks!



Compression came out to right at 10.3:1. We were shooting for closer to 10.5:1, but without going to a 4.25' stroke and only over-boring another 10 thousandths, I just had too much...
Forum: Pontiac - Street 09-24-2024, 04:35 PM
Replies: 115
Views: 13,668
Posted By JLMounce
Ah I missed that! Thanks, I'll make sure to...

Ah I missed that!

Thanks, I'll make sure to keep things shiny side up!
Forum: Pontiac - Street 09-24-2024, 04:20 PM
Replies: 115
Views: 13,668
Posted By JLMounce
Yeah, he was close, although it did make above...

Yeah, he was close, although it did make above his high side estimate. He said 550-570 initially.

They unloaded it from the dyno, cleaned it back up and put my moto-feet on it for transport. ...
Forum: Pontiac - Street 09-24-2024, 04:19 PM
Replies: 115
Views: 13,668
Posted By JLMounce
I somehow lost over a 100 cid on this deal! It's...

I somehow lost over a 100 cid on this deal! It's okay, I'll run the thing on e85.

I think you may have cross-posted steve ;)
Forum: Heating & Cooling TECH 09-24-2024, 01:56 PM
Replies: 39
Views: 1,538
Posted By JLMounce
This is a really good point. Modern OEM vehicles...

This is a really good point. Modern OEM vehicles also almost exclusively have dummy type gauges that soften the heat cycles as well. Oem's run cars around 200 degrees for stuff like the LS engines....
Forum: Pontiac - Street 09-24-2024, 01:50 PM
Replies: 115
Views: 13,668
Posted By JLMounce
It should definitely rip! Weight of the car with...

It should definitely rip! Weight of the car with me in it is just over 3600 lbs.
Forum: Pontiac - Street 09-24-2024, 01:10 PM
Replies: 115
Views: 13,668
Posted By JLMounce
Thanks, I'm through the moon on the build. I...

Thanks, I'm through the moon on the build. I should have it in the car this upcoming weekend.
Forum: Pontiac - Street 09-24-2024, 12:20 PM
Replies: 115
Views: 13,668
Posted By JLMounce
The engine was broken in and tuned yesterday. I...

The engine was broken in and tuned yesterday. I swung by for the final dyno pulls this morning.

To say that I am thrilled is an understatement! She sounds wicked and puts up numbers to match. ...
Forum: Pontiac - Street 09-23-2024, 03:55 PM
Replies: 2,033
Views: 303,126
Posted By JLMounce
Baffled mufflers and X pipes don't generally mix....

Baffled mufflers and X pipes don't generally mix. They create a lot of resonance in the system that creates that drone you don't like. These types of mufflers are better suited to H-pipe or...
Forum: THE LOBBY 09-22-2024, 10:22 AM
Replies: 150
Views: 27,134
Posted By JLMounce
That's looking awesome!

That's looking awesome!
Forum: Pontiac - Street 09-18-2024, 04:24 PM
Replies: 43
Views: 1,912
Posted By JLMounce
The difference between what we believed was a...

The difference between what we believed was a 2.73 to the 3.42 that we put in my wife's chevelle was night and day.

Not that we recorded mileage on the car, but it seemed somewhat the same and...
Forum: Heating & Cooling TECH 09-18-2024, 02:49 PM
Replies: 14
Views: 465
Posted By JLMounce
I did speak with Cold Case directly and as...

I did speak with Cold Case directly and as mentioned here above, you can in fact drill into the U channel which is hollow. So, I'll be doing that.
Forum: Pontiac - Street 09-17-2024, 04:56 PM
Replies: 14
Views: 463
Posted By JLMounce
These cars are horribly undersprung as they were...

These cars are horribly undersprung as they were designed. Shocks that lack much in the way of rebound valving don't help that much.

Based on what you're saying here, I would probably recommend a...
Forum: Pontiac - Street 09-17-2024, 02:17 PM
Replies: 14
Views: 463
Posted By JLMounce
You can go from as mild as adding a sway bar and...

You can go from as mild as adding a sway bar and upgraded shocks to the stock control arms and springs, to rear link type suspensions and aftermarket sub-frames.

Depending on what your goals are...
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