Suggestion on Performance Distributor
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
distributors don't really change power output until you are way up in the rpm range. unless you are going through the traps at the end of the quarter mile at 7000 rpm, you will not notice any change in power-provided what you have now is set up correctly. get it timed right. get the curve right. vac and centrif. then decide if you want to spend money...
76 should be HEI so you are getting the big gap spark.
Unless the bushings are worn and wobbling causing erratic spark fire timing and the weights and springs are wrong, like LArs says they need to be "curved" for performance and the vac adv can is wrong, you have a good dist.
good luck
Le Mans Master
Joined: Oct 2010
Posts: 6,903
Likes: 834
From: melbourne florida
2023 C3 of the Year Finalist - Modified
The DUI. Unit works out nice because they set it up for your car. I'm sure Lars could set yours up but I understand his sun machine was broken last I heard. And Nelson Crozier who did fantastic ignition work passed away last year. . There is a new Bluetooth programible distributor I saw on you tube on unity motorsports garage channel. It's interesting because you can even set the vacuum advance with your phone I'd be afraid to ask what it costs.
Melting Slicks
Joined: Oct 2010
Posts: 2,275
Likes: 337
From: "ɹǝpunuʍop", Adelaide, South Australia
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Really hard to go wrong with a good HEI. Simple and very reliable
There is no benefit at all using an MSD esp on your application..I do use one out of inital concern of fouling plugs due to a ton of cam overlap.
Sure it cleans things up at lower speed driving....perhaps on a forced induction/power adder situation there may/may not be some benefit
Still dont trust them, at some point that box will fail and leave me by the roadside. A proper curve can make a noticeable difference in its manners, performance etc.
I paid someone with a sun machine yrs ago to due mine as none of those kits made it act right.
I dont believe in cheaping out on pieces that have the ability to strand you...like your ignition system.
There is no benefit at all using an MSD esp on your application..I do use one out of inital concern of fouling plugs due to a ton of cam overlap.
Sure it cleans things up at lower speed driving....perhaps on a forced induction/power adder situation there may/may not be some benefit
Still dont trust them, at some point that box will fail and leave me by the roadside. A proper curve can make a noticeable difference in its manners, performance etc.
I paid someone with a sun machine yrs ago to due mine as none of those kits made it act right.
I dont believe in cheaping out on pieces that have the ability to strand you...like your ignition system.
Old Pro Solo Guy
Joined: Dec 2017
Posts: 7,975
Likes: 4,336
From: Marlton NJ
It is just not that hard to curve it yourself. It can be done in your car, or in a vise.
I set the degrees for the curve in a vice, and the vac can with a mity-vac. The only thing I will have to do now in-the-car, is to double-check the spring rate for all-in at 2800.
You can see my home-made degree tool later in this thread:
https://www.corvetteforum.com/forums...ing-chart.html
I set the degrees for the curve in a vice, and the vac can with a mity-vac. The only thing I will have to do now in-the-car, is to double-check the spring rate for all-in at 2800.
You can see my home-made degree tool later in this thread:
https://www.corvetteforum.com/forums...ing-chart.html
