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Search took 0.07 seconds. Search: Posts Made By: JLMounce
Forum: Pontiac - Street Today, 01:55 PM
Replies: 19
Views: 397
Posted By JLMounce
Yeah as long as you have something like a...

Yeah as long as you have something like a shiftworks detent in the shifter, or a shifter designed for your 4 speed anyway, that's doable.

In the US shift programming you can actually set the...
Forum: Pontiac - Street Today, 12:02 PM
Replies: 19
Views: 397
Posted By JLMounce
Autocross with an auto is not really a big deal. ...

Autocross with an auto is not really a big deal. Most cars are in 2nd for the whole run. Road courses are a different story of course.

And yes the US shift controller has the ability to store 4...
Forum: Pontiac - Street Today, 09:44 AM
Replies: 16
Views: 397
Posted By JLMounce
Thanks Paul for the information. I am planning...

Thanks Paul for the information. I am planning on needing to change the pushrods. I'm moving to a different manufacturer lifter, so that will probably necessitate that change. Saving a bit by...
Forum: Pontiac - Street Yesterday, 07:01 PM
Replies: 16
Views: 397
Posted By JLMounce
Thank you. Yes I’m aware that the HS rockers tend...

Thank you. Yes I’m aware that the HS rockers tend to come in with slightly more ratio, likely to combat deflection of the aluminum body. As a result a package that doesn’t run as much spring pressure...
Forum: Pontiac - Street Yesterday, 05:51 PM
Replies: 11
Views: 374
Posted By JLMounce
My TruTrac has a very minimal amount of slop in...

My TruTrac has a very minimal amount of slop in it. I've never measured it, but you can feel it if you rotate the wheels back and forth with the car on jack-stands. You don't feel it in the car...
Forum: Pontiac - Street Yesterday, 05:28 PM
Replies: 16
Views: 397
Posted By JLMounce
Drive train is a 4l80e with a TSP converter that...

Drive train is a 4l80e with a TSP converter that stalled at 3200rpm behind my current engine. Triple disc clutch that gets full throttle lockup in 2nd through 4th gear. Rear gears are a 3.31 with a...
Forum: Pontiac - Street Yesterday, 04:52 PM
Replies: 16
Views: 397
Posted By JLMounce
I'd love to be in the 560-580 range. Most of the...

I'd love to be in the 560-580 range. Most of the money is going to have to be spent to rebuild my engine anyhow.

Block is going to be machined with upgrades in the rotating assembly. Heads are...
Forum: Pontiac - Street Yesterday, 04:23 PM
Replies: 14
Views: 273
Posted By JLMounce
I think you're plan sounds pretty good. I also...

I think you're plan sounds pretty good. I also think that you'd have to put a pretty small cam in that thing to be near 400 hp. With an as cast SM head and a SFT of any respectable size, you're...
Forum: Pontiac - Street Yesterday, 03:53 PM
Replies: 16
Views: 397
Posted By JLMounce
Higher Ratio Rocker vs. More Lobe Lift

I'd like to get everyone's opinion on this. As I'm looking at different cams for my engine build, I've already been given some various opinions on this. I don't know enough about what this does to...
Forum: Pontiac - Street Yesterday, 03:40 PM
Replies: 19
Views: 397
Posted By JLMounce
This is true. When I had my TH400, I had to...

This is true. When I had my TH400, I had to manually shift it, otherwise the shift came way too early. Once I got the 4l80e dialed in, I haven't needed to use the gear selector for anything other...
Forum: Pontiac - Street 06-10-2024, 12:46 PM
Replies: 19
Views: 397
Posted By JLMounce
It's certainly possible that it would. But not...

It's certainly possible that it would. But not knowing if there are any differences between the factory dual gate and the hurst, I wouldn't want to send you buying something that may not work.
...
Forum: Pontiac - Street 06-10-2024, 10:19 AM
Replies: 19
Views: 397
Posted By JLMounce
Most 3 speed shifters can work with the 4 speed. ...

Most 3 speed shifters can work with the 4 speed. However, you typically lose the ability to manually drop the transmission to 1st gear and some of the detents may be ever so slightly off.

If this...
Forum: Pontiac - Street 06-08-2024, 03:27 PM
Replies: 36
Views: 989
Posted By JLMounce
Much drier and much warmer in Arizona. That may...

Much drier and much warmer in Arizona. That may be contributing to the situation. Arizona should have the same typical gasoline as most of the western states. Probably 91 with 10% ethanol. When I...
Forum: Pontiac - Street 06-07-2024, 11:52 PM
Replies: 40
Views: 2,413
Posted By JLMounce
I had to look these up as well. I wasn't...

I had to look these up as well. I wasn't familiar with the machine. They also utilize one of the new Rottler honing bays. They were pretty proud of that piece of machinery.



I think it's on...
Forum: Pontiac - Street 06-07-2024, 02:03 PM
Replies: 40
Views: 2,413
Posted By JLMounce
I spent a couple hours down at the local machine...

I spent a couple hours down at the local machine shop yesterday putting a parts and build list together. After taking some time to look at options such as an LS swap and even parting with the car,...
Forum: Pontiac - Street 06-05-2024, 07:06 PM
Replies: 38
Views: 1,535
Posted By JLMounce
If it’s a a couple drips like you are seeing...

If it’s a a couple drips like you are seeing currently, I’m not certain I’d want to pull the engine to meaningful work on the pan. I’d probably invest in a decent drip tray instead.

Mine used to...
Forum: Pontiac - Street 06-05-2024, 04:47 PM
Replies: 38
Views: 1,535
Posted By JLMounce
You're 100% positive it's the rear main seal and...

You're 100% positive it's the rear main seal and not the pan gasket? The rear corners of the pan as well as the half moon cutout below the rear main is notorious for leaking. The factory pan...
Forum: Pontiac - Street 06-04-2024, 06:53 PM
Replies: 40
Views: 2,413
Posted By JLMounce
This is a hydraulic roller engine. Still...

This is a hydraulic roller engine. Still certainly could have had a lifter failure.

The engine is coming out regardless, so I won’t bother with taking the intake manifold off while it’s in the...
Forum: Pontiac - Street 06-03-2024, 09:03 PM
Replies: 40
Views: 2,413
Posted By JLMounce
Appreciate the input. I have a number of those...

Appreciate the input. I have a number of those items already. The install tool, digital caliper. I could use a better torque wrench.

As far as the assembly cost, the local machine shop shows...
Forum: Pontiac - Street 06-03-2024, 03:16 PM
Replies: 40
Views: 2,413
Posted By JLMounce
I do think the hydraulic rollers may have been...

I do think the hydraulic rollers may have been part of the cause here. I wouldn't look at any other set on this except the Johnsons, which currently have a decent reputation.

I'm certainly...
Forum: Pontiac - Street 06-03-2024, 01:20 PM
Replies: 40
Views: 2,413
Posted By JLMounce
Yes, a lot will depend on costs involved here. ...

Yes, a lot will depend on costs involved here. If it's up there quite a bit, I may end up going a route like that.



I keep a pretty good eye on my oil pressure. It's never fluctuated that I...
Forum: Pontiac - Street 06-03-2024, 12:24 PM
Replies: 40
Views: 2,413
Posted By JLMounce
Yeah it definitely hurts on an emotional level. ...

Yeah it definitely hurts on an emotional level. While the money side of things stings a bit, it's not a huge concern. At least in that way I'm very fortunate.

I can take the time hit while...
Forum: Pontiac - Street 06-03-2024, 10:40 AM
Replies: 40
Views: 2,413
Posted By JLMounce
I would simply plan on new pistons as well. ...

I would simply plan on new pistons as well. These are original TRW forgings. Strong, but certainly heavy and old tech. It would be really nice if the cylinder walls could be honed only, but if...
Forum: Pontiac - Street 06-03-2024, 10:09 AM
Replies: 40
Views: 2,413
Posted By JLMounce
Thanks for the kind words. I'm starting to build...

Thanks for the kind words. I'm starting to build lists and make calls today.



The engine is a 73 455. Factory rods and crank, TRW Pistons. It was originally built by the previous owner and...
Forum: Pontiac - Street 06-02-2024, 10:24 PM
Replies: 40
Views: 2,413
Posted By JLMounce
Catastrophic Engine Failure

Maybe not “catastrophic” in the most real sense, but she cooked her bearings.

I’m at a near complete loss on this one. Inspection of the engine about a year ago after pulling it to replace the...
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