HEI didtributor in 400

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Jul 7, 2009 | 11:30 AM

ltlvt

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HEI didtributor in 400

I'm thinking about buying one of the proformance HEI distributors for my 400 in my 81 F-350 truck. Has anyone used this distributor? The engine is stock with the 2150 carb. I'm thinking the distributor comes with a steel gear. Is this gear compatable with the stock camshaft? Thanks

Jul 7, 2009 | 12:03 PM

ibleedblue1385

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From: Parma, MI

Quote:

Originally Posted by ltlvt

Friend of mine has one on his 400, dropped in and ran with out any problems. And yes it comes with a steel gear, compatable with a stock camshaft.

Jul 7, 2009 | 06:36 PM

73XAFalcon

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Joined: May 2002

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From: Sin City, USA

Quote:

Originally Posted by ltlvt

I'm guessing you are talking about Performance Distributor and their DUI distributors? If you are looking at the Procomp copycat crap off ebay then good luck. I'm running a DUI and love it. Simple to hook up and they set it up for your engine....the Procomp uses a generic curve and module.

Jul 7, 2009 | 09:43 PM

ltlvt

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This is the distributor that I am talking about.

http://summitracing.com/parts/PRO-66980B/?image=large

Jul 8, 2009 | 04:48 AM

wyazel1

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Joined: Mar 2007

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Im running a mallory HEI in my new 400 and it works great but i will tell ya one thing you better have a pretty small diameter air cleaner or it wont clear. I put a 2" spacer under my aircleaner pretty simple fix.

Jul 8, 2009 | 12:30 PM

73XAFalcon

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Joined: May 2002

Posts: 526

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From: Sin City, USA

Quote:

Originally Posted by ltlvt

This is the distributor that I am talking about.

http://summitracing.com/parts/PRO-66980B/?image=large

Ok, never used them so I can't and won't recommend. But I have used Performance Distributors DUI. They are the guys that created the market. Here's a link to theirs:

http://www.performancedistributors.c...stributors.htm

Jul 8, 2009 | 06:11 PM

grclark351

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Joined: Dec 2002

Posts: 2,003

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From: chicago burbs

a steel gear is NOT compatible with a stock flat tappet cam. the summit listing states that the gear IS steel...

------------------------------------------------------------------------------------
Gear Material Steel

Notes Distributor gear is compatible with factory roller cam. Distributor shaft diameter is 0.530 in.
-------------------------------------------------------------------------------------

now if that's an error or not i don't know? but 66980R states that it comes with an iron gear, appropriate for a stock flat tappet cam
http://summitracing.com/parts/PRO-66980R/

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Aug 6, 2009 | 03:07 PM

PerfDistIgnition

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Quote:

Originally Posted by ltlvt

If you decide to get a new distributor, consider our custom curved Duraspark Distributor built with our new Full Length Oil Impregnated Bronze Bushing. The full length bushing improves timing stability and spark scatter. If stock appearance is not an issue, take a look at our one piece D.U.I. Distributor. Whether you choose the Duraspark or the D.U.I., we curve each on a distributor machine based on your engine combination. Please see them at:

http://performancedistributors.com/forddistributors.htm

Also, there is now an excellent installation article on the D.U.I. Distributor on the Ford-Trucks.com site at:

https://www.ford-trucks.com/article/idx/0/358/article/DUI_Ignition_Installation_In_A_Ford_351W_V8.html

Ignition Lesson of the Month: Hystereses, the difference between the timing as the rpm and vacuum increases to the timing as rpm and vacuum decrease, needs to be kept to a minimum. A precise advance curve accomplishes this.

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