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Search: Posts Made By: TransAm400
Forum: Performance Parts For Sale/Wanted 12-09-2023, 08:33 PM
Replies: 4
Views: 708
Posted By TransAm400
I’ll take em. Sending PM.

I’ll take em. Sending PM.
Forum: Pontiac - Street 11-28-2023, 10:54 AM
Replies: 10
Views: 328
Posted By TransAm400
Can you get the dimension from the end of the...

Can you get the dimension from the end of the head to the edge of the vp pulley? Looks like it may be a little shorter than the bracket that I have.
Forum: Pontiac - Street 11-26-2023, 07:49 PM
Replies: 10
Views: 328
Posted By TransAm400
Vacuum pump with clutch fan

Anyone running a vacuum pump set up with a mechanical fan? I have the Butler bracket and GZ pump set up. Was looking at bolting it up earlier but it looks like the pump pulley will interfere with the...
Forum: EFI Tech 11-26-2023, 07:41 PM
Replies: 18
Views: 1,359
Posted By TransAm400
Update: another wrap on the secondary spring...

Update: another wrap on the secondary spring seemed to cure the hanging idle. Just need to put some miles on it now and keep fine tuning but it seems to get better every time I get it out.
Forum: EFI Tech 10-30-2023, 03:45 PM
Replies: 18
Views: 1,359
Posted By TransAm400
Interesting. I'll check out the secondaries...

Interesting. I'll check out the secondaries first. I also have an extra IAC on hand I can swap out if needed.
Forum: EFI Tech 10-27-2023, 10:55 AM
Replies: 18
Views: 1,359
Posted By TransAm400
It's been awhile since I messed with it but I did...

It's been awhile since I messed with it but I did get it running better. I think reducing the idle timing helped. I believe I ended up around 16 degrees. The AFR at idle is close to the target and it...
Forum: EFI Tech 05-25-2023, 09:12 AM
Replies: 18
Views: 1,359
Posted By TransAm400
Here's the VE table.

Here's the VE table.
Forum: EFI Tech 05-24-2023, 12:55 PM
Replies: 18
Views: 1,359
Posted By TransAm400
I'm having an issue with AFR at idle also. Target...

I'm having an issue with AFR at idle also. Target AFR is all the way up to 14.5 at idle but it is usually reading around 12.9-13.0 at idle. I did have the timing at 24 degrees at idle. When I pulled...
Forum: EFI Tech 05-24-2023, 10:17 AM
Replies: 18
Views: 1,359
Posted By TransAm400
It idles around 65 kpa. Seems like it should make...

It idles around 65 kpa. Seems like it should make more vacuum. That's why I started playing with the table.
Forum: EFI Tech 05-24-2023, 08:42 AM
Replies: 18
Views: 1,359
Posted By TransAm400
See if this PDF is better. I exported to excel...

See if this PDF is better. I exported to excel but I can't attach it here.
Forum: 61-66 Big Pontiac TECH 05-24-2023, 08:24 AM
Replies: 10
Views: 538
Posted By TransAm400
I don't think the Sniper is compatible with any...

I don't think the Sniper is compatible with any DBW but that would be cool.
Forum: EFI Tech 05-22-2023, 08:54 PM
Replies: 18
Views: 1,359
Posted By TransAm400
Base Timing Table

Working on fine tuning my base timing table. Any advice on where I can make some improvements? Specs: Sniper EFI with Hyperspark ignition, 455, 10:1, 87CC E-heads, 242/248 on 112. Just a street car.
Forum: 61-66 Big Pontiac TECH 05-22-2023, 03:39 PM
Replies: 10
Views: 538
Posted By TransAm400
I switched to a Lokar cable set up on my 64....

I switched to a Lokar cable set up on my 64. Works better and no chance of binding up. You might want to put a throttle lever extension on that Sniper also. They can be really touchy without it.
Forum: 61-66 Big Pontiac TECH 12-20-2022, 12:35 PM
Replies: 1
Views: 506
Posted By TransAm400
63 GP on BAT

Anybody know anything about this car? Love the color combo. Seller hasn't been very responsive.


https://bringatrailer.com/listing/1963-pontiac-grand-prix-7/
Forum: Performance Parts For Sale/Wanted 07-22-2022, 09:53 AM
Replies: 5
Views: 1,296
Posted By TransAm400
Does it have any port work?

Does it have any port work?
Forum: EFI Tech 07-19-2022, 08:23 PM
Replies: 27
Views: 3,574
Posted By TransAm400
It should idle fine on the box tune with that...

It should idle fine on the box tune with that cam. Once you get it up and running you will always want to tweak your tune up for optimum performance no matter what cam. Are you controlling timing...
Forum: EFI Tech 07-19-2022, 03:10 PM
Replies: 27
Views: 3,574
Posted By TransAm400
What do you consider big? I’m running 242/248 on...

What do you consider big? I’m running 242/248 on a 112 in a 455.
Forum: EFI Tech 06-27-2022, 07:25 PM
Replies: 33
Views: 2,390
Posted By TransAm400
Yeah the spring is there. This is a pretty new...

Yeah the spring is there. This is a pretty new set up.
Forum: EFI Tech 06-26-2022, 03:12 PM
Replies: 33
Views: 2,390
Posted By TransAm400
Well I think its fixed but it didn’t have...

Well I think its fixed but it didn’t have anything to do with the spacer. Adjusted the idle stop screw about a 1/4 turn and it seems to be perfect now. Dont know why it started all the sudden but I...
Forum: EFI Tech 06-25-2022, 01:28 PM
Replies: 33
Views: 2,390
Posted By TransAm400
Took the spacer out and put a new gasket under...

Took the spacer out and put a new gasket under the TB. Also cleaned the IAC. Haven’t been able to drive it yet but it idles good in the driveway and returns to idle quickly when you hit the throttle....
Forum: EFI Tech 06-23-2022, 10:49 AM
Replies: 33
Views: 2,390
Posted By TransAm400
Didn't have time to work on it last week. Hoping...

Didn't have time to work on it last week. Hoping to mess with it this weekend.
Forum: EFI Tech 06-16-2022, 09:21 PM
Replies: 33
Views: 2,390
Posted By TransAm400
I think Sniper software is different than the...

I think Sniper software is different than the regular Holley Dominator or HP.
Forum: EFI Tech 06-16-2022, 10:06 AM
Replies: 33
Views: 2,390
Posted By TransAm400
I will email you the tune file. Here's a...

I will email you the tune file. Here's a screenshot of the timing map.

Closed loop may be another issues and something else I had questions about. I attached the same datalog with CL status...
Forum: EFI Tech 06-15-2022, 11:00 AM
Replies: 33
Views: 2,390
Posted By TransAm400
I changed the ramp decay last weekend and it...

I changed the ramp decay last weekend and it didn't make much difference. I'm starting to think that the issue is possibly related to a phenolic spacer that I installed. Maybe something shifted a...
Forum: EFI Tech 06-15-2022, 10:25 AM
Replies: 33
Views: 2,390
Posted By TransAm400
I'll pull the unit off and check everything this...

I'll pull the unit off and check everything this weekend. I'll double check any other vacuum leaks also. Does the log look like it has excessive noise in your opinion?
Showing results 1 to 25 of 300

 
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