There is currently a Big End Performance distributor with Accel HEI Super Coil in the car. I can't find any information on the Big End Dizzy so am looking to replace it. Are there any recommendations? Something that is easy to work with and has a good advance curve built in for my motor (see sig.) are pluses.

Thanks,

Stephen

An HEI is an HEI pretty much, unless you want to start working with the advance curve. That is when the MSD 8365 shines, as it comes with bushings and springs to adjust the curve. Or, you can do like like Vince did, and put a bolt and nut in to either lock the timing, or lmit the mechanical advance. It works real good.

http://i150.photobucket.com/albums/s86/wildman926/Ebay%20stuff/heibolt.jpg

Well, setting the approx. 18 of initial timing is pretty simple it seems. Getting a dist. that only puts in an additional 18 degrees mech. advance all in by 3000 RPM seems hard to find. So, I assume I must have an adjustable mech advance, correct? Unless there is a dist. out there that is set very close to what I need.

Hi,I put a DUI disributor in my chevelle,they curved it to my setup and dont have to run an external box.Have never had a problem with it.

MSD Pro Billet is pretty easy to tune. I like mine.

Thanks, guys. I found this http://www.msdignition.com/product.aspx?id=5565&terms=8474 . Is that overkill? They want $350 for it. Is there an MSD distributor that can run my ACCEL HEI Super Coil (it is mounted to the distributor itself)?

Thanks,

Stephen

you don't need a $350 distributor. You need a $15 curve kit and some patience :)
I have had 11-12-13 second rides that run nothing more than a GM or Accel replacement HEI with a curve kit.

Pro billet. I have it on my camaro, along with the MSD 6AL box to run it with (you have 2 options: stand alone or MSD box activated). Prety much maintnance free and looks great, and has many different curves possibilities.

I wouldn't trust a stock GM HEI though...unless you have the aftermarket module in it...

MSD Pro Billet with 6AL box. Reliable, looks good, easy to tune, includes a rev limiter. Plus it's a small body so firewall clearance is not an issue.

you don't need a $350 distributor. You need a $15 curve kit and some patience :)
I have had 11-12-13 second rides that run nothing more than a GM or Accel replacement HEI with a curve kit.

best advise here.........
I went with a MSD streetfire (hopped up HEI) & a recurve kit:yes::thumbsup:

My dizzy is a ZZ502 take-out, has the melonized gear which is nice. It had a 22* mechanical curve, which gave me an intial timing of 14* for the 36* total I wanted to run. I installed the "limit" bolt as shown by Walt, and shortened the mechanical to 16*. But since, I locked it out with that through bolt also in the pic. If you have some time, and a couple of screws, you can make any curve to want. You can also spend 350.00 and have it done for you. I think even the MSD with the big bushings still have too much mechanical adv. dont they?

FWIW, I took out a complete MSD HEI/6AL setup and sold it, and now run this dizzy by itself. I cant feel any difference, nor was it reflected in track times.

Really, I'm just looking for something that I can recurve/limit myself. I assume the whole stop limit bolt technique requires some precise drilling? I'm not looking for more spark....I just want to be able to set my timing because, based on some other conversations here, that is where all of my low-end power is being lost. If I were to get the MSD Streetfire, does their normal mechanical advance kit work on it just as it does on the Pro Billets?

Thanks!

Really, I'm just looking for something that I can recurve/limit myself. I assume the whole stop limit bolt technique requires some precise drilling? I'm not looking for more spark....I just want to be able to set my timing because, based on some other conversations here, that is where all of my low-end power is being lost. If I were to get the MSD Streetfire, does their normal mechanical advance kit work on it just as it does on the Pro Billets?

Thanks!

If using the streetfire,get the spring kit & put in the copper springs.;)
the streetfire has 20* built in so 18* initial will get ya 38* total and the copper springs will have it all in by 3000

Really, I'm just looking for something that I can recurve/limit myself. I assume the whole stop limit bolt technique requires some precise drilling? I'm not looking for more spark....I just want to be able to set my timing because, based on some other conversations here, that is where all of my low-end power is being lost. If I were to get the MSD Streetfire, does their normal mechanical advance kit work on it just as it does on the Pro Billets?

Thanks!


No drilling. The holes were already there...at least on my dizzy. Stick a bolt through the lower portion of the advance mechanism, and grind the side of the bolt to give you the amount of travel you need to get the desired amount of advance. Takes a couple of tries, but you will get there. You want the grinded-side of the bolt to match the angle of the advance mechanism so you get a nice positive stop. I had to whittle a bit off of my rotor to get it to sit back down properly now that a bolt is there.

If your cam is kinda big, you could just lock it out...even easier to do. I'm locked now and I'm really liking it.

No drilling. The holes were already there...at least on my dizzy. Stick a bolt through the lower portion of the advance mechanism, and grind the side of the bolt to give you the amount of travel you need to get the desired amount of advance. Takes a couple of tries, but you will get there. You want the grinded-side of the bolt to match the angle of the advance mechanism so you get a nice positive stop. I had to whittle a bit off of my rotor to get it to sit back down properly now that a bolt is there.

If your cam is kinda big, you could just lock it out...even easier to do. I'm locked now and I'm really liking it.

Vince,

That little trick of yours should be in the tech articles. It works like a champ on my SBC. Had I know about it earlier, I would have done it with my BBC and not purchased the MSD 8365 Billet HEI for it.

On my SBC, I have exactly 10* mechanical advance. It sure likes it. I used two nuts with blue thread lock to ensure it stays there.

Thanks Walt. I think the toughest thing when it comes to timing is understanding how a dizzy works....although its easy, its tough to grasp the concept of mechanical advance at first.

What's real nice about the limiting bolt, is not only does it shorten the advance curve, but it makes the timing more stable at max rpms. My timing would always move around a bit up top, making setting the total tough. Not anymore.

And, for reasons I cant explain, shortening the mechanical curve makes it come in faster. Mine was coming in at <2000 with the stiffest springs I could find. The MSD instructions/timing chart shows this relationship...the less mechanical, faster the curve comes in.