[jhein]

Originally Posted by Captain Obvious

I'd ask him; tell him what it is. If I were a builder I'd be pretty stoked to be able to input exactly what I want for a curve in, rather than dealing with weights and vacuum stuff. Plus I'd get to try out the tech for free. The interface is super easy. Or maybe he's old school and isn't interested, which is fine too.

He's definitely old school. But, he builds a lot of motors and has all kinds of customers so maybe he's done them before. But I think you're right. It would be a lot easier to make adjustments with this rather than changing springs and weights. I'll give him a call and talk it over.

[ta man]

Originally Posted by jhein

He's definitely old school. But, he builds a lot of motors and has all kinds of customers so maybe he's done them before. But I think you're right. It would be a lot easier to make adjustments with this rather than changing springs and weights. I'll give him a call and talk it over.

Personally I would let the builder do what he wants, he may want to keep it simple, use the original distributor and do a few pulls..you aren't going to find any magic horsepower with the new distributor.Time is money. But after is time to play with the tune in the car on the road and set it up for drivability, power etc..that may take a while to really dial it in.

[lovedemnewfies]

So I just installed the small cap version on my 65 GTO 389 4 speed no A/C car with 4:11 rear gears. Cam is an 068 grind running Tri-Power. Still need to do tuning with it but install went smooth and startup was quick and easy. Question for those who have used this distributor is running a factory tach. It’s off by approx 200 rpm. Worked correctly with points. I have the tach currently connected to the - neg side of coil just like when I was using points. I know it has something to do with how the factory rally gauge was manufactured and is not compatible with modern units. Question is can a Tach Adapter work to correct the issue? Something like this

https://www.allzim.com/store/tach-ad...e-adapter.html


Thanks for any help.

[Formula jg]

Was there a resistor wire in the original points setup? It can cause some weird issues if you use it on the Progression distributor, if I recall there is a special note in the installation instructions not to use a resistor wire for power to the dist.

Or alternatively contact Theodore at Progression he quickly resolved an issue I had and another my brother had, great customer service.

[lovedemnewfies]

I ran a new dedicated 12v power wire. The distributor is the only part tied into the new power feed.

[Captain Obvious]

Originally Posted by lovedemnewfies

So I just installed the small cap version on my 65 GTO 389 4 speed no A/C car with 4:11 rear gears. Cam is an 068 grind running Tri-Power. Still need to do tuning with it but install went smooth and startup was quick and easy. Question for those who have used this distributor is running a factory tach. It’s off by approx 200 rpm. Worked correctly with points. I have the tach currently connected to the - neg side of coil just like when I was using points. I know it has something to do with how the factory rally gauge was manufactured and is not compatible with modern units. Question is can a Tach Adapter work to correct the issue? Something like this

https://www.allzim.com/store/tach-ad...e-adapter.html

Thanks for any help.

My tach is also off by a couple hundred RPM at 3k or so. Definitely less so at idle. No resistor in wire, new wiring harness was installed in the car that was built for HEI, so full 12v.

[lovedemnewfies]

So I called progression ignition and their answer was that the tach was off and that the grey wire off the dizzy wouldn’t have enough power to run the factory tach. So I guess I need to have the tach refurbished to have the “guts” installed to make it work.

[livstrong]

Originally Posted by Formula jg

461
6X4 approx. flow 250cfm
850 MD w/annular
T2 w/1” tapered 4 hole spacer
700R4 w/lockup
3:42
Crower solid flat tappet approx. spec w/1.65:
244/252@50
0.525/0.551
112 LSA
91 Octane/ 0% ethanol

After a lot of testing (still not done though) heres the best map so far with my combo.

Thanks for a great start as my combo was close
461
6X4 heads
770 Avenger
1/2 inch spacer
Super T10 4 speed
3:55
XE268H camshaft
94 Octane

[livstrong]

Originally Posted by livstrong

Thanks for a great start as my combo was close
461
6X4 heads
770 Avenger
1/2 inch spacer
Super T10 4 speed
3:55
XE268H camshaft
94 Octane

After getting some time to continue playing have added a few changes

[Formula jg]

To assist in the tuning I like to do a screen recording of the table on my iphone while driving. The key is to drive the same route and same throttle pattern each time so your not scratching your head when comparing screen recordings.

[Formula jg]

Imlern02, as requested sent you a couple of tables.

[ta man]

I just ordered one today, it will aid with my street/strip testing and tuning.I'm still trying to fine tune my combo..driveability, mileage and power

[Formula jg]

I just sent maps to those couple of members that pm’d me.

[wbnapier]

Would you mind sending me a timing map as well? wbnapier@yahoo.com

Thanks

[Formula jg]

Ok, sent.

[Formulajones]

Originally Posted by lovedemnewfies

So I called progression ignition and their answer was that the tach was off and that the grey wire off the dizzy wouldn’t have enough power to run the factory tach. So I guess I need to have the tach refurbished to have the “guts” installed to make it work.

So has Progression addressed this issue yet?

Sending a perfectly good working factory tach out to be modified is not really an option.

[wbnapier]

Nothing received... I clicked the "Saved Tables" then the "Cloud" icon, but no recent shares. Maybe it takes a while.

[lovedemnewfies]

Not to my knowledge. Guess I’ll just live with it.

[Formulajones]

Originally Posted by lovedemnewfies

Not to my knowledge. Guess I’ll just live with it.

Shucks. I would think they could do something to correct it that isn't overly complicated. With todays tech and electronic gadgetry it should be solvable without sending the tach out to be modified in some way.

I've had (and still have) these factory tachs work fine and read very accurately with MSD stuff and older Accel stuff and even aftermarket EFI systems. So not sure what Progression Ignition is doing to make the tach read incorrectly.

[Formula jg]

wb, I resent the map.