[Half-Inch Stud]

Would be satisfying if an HEI was dropped-in and made more TQ @RPM.

[HWYSTR455]

Originally Posted by Half-Inch Stud

Would be satisfying if an HEI was dropped-in and made more TQ @RPM.

Explain how that would be possible?

Crazy how people are so religious of HEI, makes zero sense to me. Coil in cap is a big drawback, as is the large base/cap. And that's not even beginning to talk about the modules.


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[65 Lamnas]

Originally Posted by scott70

Dyno day this Friday.
.040 over 455
9.73-1
236/244 @ .050,,,, .580 lift HR
Stock iron port matched intake
Cliff quadrajet
#64 heads cnc port to 254 cfm by Dave
Dyno headers but will switch to my rare oversized manifolds with 3” head pipes
MSD RTR
Internally balanced

With headers I’m expecting around 495 hp .

Will they switch over to the RARE manifolds on the dyno for a comparison?

[grivera]

A Progression Ignition dizzy would be nice in this application. Full timing control via phone app/BT and built in rev limiter: https://progressionignition.com/prod...ap-distributor

[scott70]

Originally Posted by 65 Lamnas

Will they switch over to the RARE manifolds on the dyno for a comparison?

Yes,,,as soon as they get the new dist in and running correctly I will go over with my qjet and manifolds. Once the engine has total timing dialed ( which will be around 33 as usual) Ill throw on my qjet and try that. Last time it made a couple of more HP than the 850 holley dyno carb. Then we;ll remove the headers and try the oversized manifolds with the 3" headpipes from RARE.

[scott70]

Originally Posted by grivera

A Progression Ignition dizzy would be nice in this application. Full timing control via phone app/BT and built in rev limiter: https://progressionignition.com/prod...ap-distributor

I thought about that a few years ago but sounded like wizardry thats over my head. Im not very technical savvy.
New dist should be at the shop monday. Not sure whats wrong with the old one...only 5 years old. Hopefully MSD can fix it and then Ill sell it i guess.

[HWYSTR455]

The new MSD programmable 6AL, now called the 'Ultra 6AL+', with programmable timing now does bluetooth:

https://www.msdignition.com/products...eet/parts/6523


Then it wouldn't matter what dizzy you use...

EDIT: It's smaller too, at 3.3" x 5.2" .

EDIT 2: It has an integrated MAP sensor and CAN-BUS capable. Comes in black too:

https://www.msdignition.com/products...et/parts/65233

**Apologize for some previous tone of comments, I've been under the weather...

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[Dragncar]

Mains, did you do this to them ? Or leave them as is ?
It matters.

HEI ? You will not get any more power out of a HEI vs a points triggered MSD. proven it.
Less to go wrong and no apps to screw up.
You can get HEI for other makes too. Some Ford racer I know run them. Coil on cap and all that. I ark them why and they look at me like I am nuts. HEI has this reputation I do not get.

[scott70]

Originally Posted by Dragncar

Mains, did you do this to them ? Or leave them as is ?
It matters.

HEI ? You will not get any more power out of a HEI vs a points triggered MSD. proven it.
Less to go wrong and no apps to screw up.
You can get HEI for other makes too. Some Ford racer I know run them. Coil on cap and all that. I ark them why and they look at me like I am nuts. HEI has this reputation I do not get.

Im assuming they used them as is. Half grooved I believe. That some type of extra oil hole?

[67Lemons]

Originally Posted by HWYSTR455

The new MSD programmable 6AL, now called the 'Ultra 6AL+', with programmable timing now does bluetooth:

https://www.msdignition.com/products...eet/parts/6523


Then it wouldn't matter what dizzy you use...

EDIT: It's smaller too, at 3.3" x 5.2" .

EDIT 2: It has an integrated MAP sensor and CAN-BUS capable. Comes in black too:

https://www.msdignition.com/products...et/parts/65233

**Apologize for some previous tone of comments, I've been under the weather...

.

I didn’t know this existed, very cool and great to see MSD offering a programmable ignition but it’s about the same price as the Progression Distributor, $478 vs $529 Still great to see others offering easy programmable ignition though!

[steve25]

I agree with post 22.

Coils run cooler and last longer when there external.

With big diameter caps the tip of the rotor spends more time between each terminal.
This time is only milliseconds, but has an effect as Rpm’s go up, and especially above 5000.

This added distance means the spark leaving the tip of the rotor arc’s more before it get to the cap terminal, and especially if coils are used that kick out more then 45,000 volts.

A well set up stock points Dizzy modded to take another set of points while keeping it’s vacuum advance losses nothing over a HEI .

[TXSTARFIRE]

Originally Posted by steve25

A well set up stock points Dizzy modded to take another set of points while keeping it’s vacuum advance losses nothing over a HEI .

Can you explain this? By another do you mean an additional or a non-stock set of points? Thanks!

[grivera]

Originally Posted by 67Lemons

I didn’t know this existed, very cool and great to see MSD offering a programmable ignition but it’s about the same price as the Progression Distributor, $478 vs $529 Still great to see others offering easy programmable ignition though!

And with MSD you have to buy a box and a dizzy. It’s hard to beat the PI distributor if you’re looking for a programmable option at a good price.

[HWYSTR455]

Some people want to run a box anyway. My concern would be if the company goes under in 3 years or something, then what?

Then of course phones are constantly updating their' software, and there's a chance the app could get buggy, or not work at all. You would be forced to hold on to an old phone just to tune it.

MSD isn't going anywhere, and the R&D gets tons of money. They offer a desktop app too, which many racers use, and it's the same software the GRID uses.

I like the fact that the Progression body is basically a knock-off Pro Billet, but vendors are starting to go more toward hall effect triggers for a number of reasons, wish both vendors would switch over.

I also like the fact that the knock-off Pro Billets use a compatible cap & rotor, MSD/Holley has ridiculous pricing at $68 for each, and you can use the knock-off caps & rotors for like $40 for both. Sure beats $140 for a simple tune up.

I just got a Summit cap & rotor, and it fits the Dual Spark too. Nice.


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[Dragncar]

Originally Posted by scott70

Im assuming they used them as is. Half grooved I believe. That some type of extra oil hole?

Its not a extra oiling hole. On the mains where the 3 holes intersect into one, the shot of oil does not come from the middle of the hole. It comes from the hole on the tab side of the bearing.
So, if you leave say a Clevite bearing alone the main shot of oil had to hit the back of the bearing, move over and get through the stock hole. Thats one thing on a stock engine. But on a engine that will be spun up it can starve a rod bearing, not good.
Even the FM bearings with the slot need this done. The slot still partially covers the hole where oil comes from. My my current engine has FM main bearings and the slot with the added hole looks kinda like a golf club or "L". I just could not find the pictures for it.
I have always done this and never spun a bearing in my life.

[steve25]

To very briefly reply to post 32, it’s a very involved mod that use to be done before Accel came out with there duel point dizzy for Pontiacs in the mid 70s.

You need to rob the breaker plate from another one.
Cut it down to fit into the dizzy and tack weld it below the original breaker plate .

Move the condenser to outside the dizzy.

Drill and tap holes to mount the second set of points directly opposite the original one and then shim the added set of pints up to make it about the same height as how the original one sits in relation to the cam.

[TXSTARFIRE]

OK, got it. Its a homemade dual point that you could build yourself before they were readily available for the Pontiac V8. Thanks!

[scott70]

Dyno results…. 514 hp with headers,,, 510 hp with rare oversized manifolds and their 3”headpipes. Rear main started to leak a little bit seemed like so. I didn’t take the motor with me. They’re gonna look at it. I used the best gasket company, graphite rear main.

[steve25]

Nice numbers!

Even the BSFC numbers.

[grivera]

Well done!! That'll be a fun ride