I'm looking at replacing some ignition pieces, and I'm trying to figure out what to get. I want to replace the coil, rotor and ign module.

First of all, does anyone know the AC/Delco part numbers for the coil or module?

Second I'm looking at these:
Coil, Cap, Rotor from Hypertech - Will this one fit?
Coil, Cap, Rotor from Summit. This is the one I'd like to get...

http://store.summitracing.com/partde...5&autoview=skuIgnition Module

I picked those because they're cheaper then AC/Delco. I don't really care if it is an improvement, as long as it isn't lesser-quality.

So... has anyone used these? Comments? Opinions? Rants?

 

The hypertech is whats in mine, it even allows for the stock tpi plate cover to stay with the stock wires.

 

as far as the module - is yours bad? Thats not an "normal" tune up item to be replacing, especially since you said,

 

I thought you had to replace them if you replaced the coil?

That was my only motive for replacing it that too...

 

nope - save the fifty

 

cool

 

Autozone sells an Accel cap & rotor kit for $19.95.

 

I use the top one you listed....the Hypertech. Can't say it helped but it didn't hurt anything either. Smooth install and works as it should.

 

Trust me!!!!! AC Delco.They are built EXACTLY to your 'Vette's specs. ALL other brands use designs modified "enough" to avoid infringing on GM's patents. Same for most tune up items, go with Delco. Costs a little more, but dimensionally it is superb. Unless you want go hardcore racing, OEM fits perfectly.

 

What exactly are these design modifications that render an aftermarket distributor cap to not qualify as an exact fit??

 

The only thing I am aware of is if you have screw down type. All the aftermarkets I've seen have the twist post type. I have been using pertronix cap/rotors, I just cut off the twist downs and use screws. By the mold design/numbers msd, pertronix, etc. look to be all made in the same place.....taiwan or wherever. I use them because I like brass terminals and the rotor has an extra support piece for the pointer, as opposed to OEM.

 

Does anyone know the part numbers for the AC/Delco versions?

I like to buy that stuff from GMPartsDirect, but I want to make sure I'm looking at the right thing.

 

M7, the difference between the screw down type and spring loaded clamp isn't a replacement for one or the other. They are similar caps for 2 different applications. I was more interested in an explanation for the load of previously posted by jcsr72.

 

Most of the brand name ignition manufacturers are not building there own caps and rotors, as mseven said above, those parts are being made overseas where parts like that can be made for cheap. I'm sure AC Delco is no different. I'm using AC Delco cap, rotor and coil in my '90 and with good results. I tried the MSD coil route and didn't have much luck, that was before I found out about the whole tach filter thing a couple of months ago. I'm not using AC Delco because it's OEM parts, I'm using it to keep the SCCA tech inspectors off of my butt

Adam.

 

Mikey Whipreck, the delco #'s are "D338X" for the dist. cap and "D448X" for the rotor.

C4Boy, are you truly aware of mechanical tolerances? How many times have people purchased aftermarket parts to find out the fit wasn't exact or didn't work properly? Or even better, how many of those issues were aleviated by going OEM? I'm not saying there are not quality components out there. MSD, Jacobs Electronics are just a few samples of great products. YOU CANNOT REPRODUCE AND MARKET A CARBON COPY OF THE ORIGINAL EQUIPMENT WITHOUT VIOLATING PATENT RIGHTS. But before you start insulting people, use a little common sense (or is that incommon sense?). I post here to help people, Mikey's application appeared to benefit from OEM considering his current setup. Get some real world experience before you post . And by experience I don't mean by installing "high performance anco wiper blades" as your avatar states.

 

Yes, I am. I can ever read a micrometer. Let's not make a plastic molded dristributor cap out to be rocket science, now.
I agree it occasionally happens. Usually with the budget/cheapo lines of products typically carried by the retail parts stores. Although, more often than not, it's a result of a customer providing incorrect vehicle information when purchasing a part or incorrect installation. Like when a customer says he needs a distributor cap for an import, but he doesn't know the difference between a Bosh or Hitachi distributor.
Yeah, I don't know much about patents. But, I'm sure there must be some kind of licensing involved that allows aftermarket auto parts manufacturers to reproduce the same part. If not, there would be no "aftermarket" auto parts industry. Just like years ago when dealerships tried to tell people their new car warranty would be void if they used aftermarket parts. That turned out to be B.S. as well, and Federal court backed consumers.
A lack of common sense would be telling someone they have to go to buy OEM and pay twice as much for such a simple item like a distributor cap, in order for their car to run correctly.
From reading his post, I don't know how Mikey's application benefits from OEM. Unless I missed some big old techincal cap & rotor shootout. All he asked for was a Delco cap & rotor part # and he posted a couple links to other brands.
My problem is with the number of posts I see where people act like using anything other than an AC Delco this or that is going to cause their car to explode or void its warranty. It's absolute . It's like the little old lady who still brings her slant 6 Chrysler to the dealer for everything because she's worried a regular mechanic can't fix it. It's a scare mentality used by people who don't know any better. And while I agree, a Corvette certainly has its share of unique parts that benefit from an OEM replacement, a SBC distributor cap isn't one of them!

My previous real world experience with parts comes from several years of managing a wholesale auto parts store. So while I've helped the weekend DIYer troubleshoot the problem he's trying to fix, I've also sold the same parts in bulk to mechanics and new car dealerships (yep, guess where the dealer gets some of his parts when they're repairing your car).. And guess who's had the higher "defective" return rate? It's not the mechanic. The guy who typically comes in to return a "defective" distributor cap is usually the one who comes back for an HEI or EEC module, after I explain what his problem is and that the cap & rotor are fine. It's the same guy who says my rebuilt alternators are junk, but doesn't admit to constantly jump starting a stone cold dead battery in the middle of winter.

Sorry for the rant/hi-jack, folks.

 

I understand, as the ones I use are spring loaded (spring twist downs removed, screws added) on a screw down 90 base. The HEI style caps (coil in cap), aside from the hold downs are dimensionally the same and interchangable.
I get it, w/o going into it........ GM recommends Mobil1, maybe if one doesn't use that your car will blow up which is probably why we have an oil thread every week .......some guys don't get it, most of these types of parts regardless of MFG. all comes from the place (this applies to modules, map sensors and a variety of other parts I have purchased which are labeled).
I agree, and as to the copyright infringement aspect, it is usually good for 20 years, not lifelong.

 

FWIW, I decided to go with the Hypertech version. Since you guys said it will fit under the TPI extension. Without a new module.

 

I didn't use Mobil1 in my car AND I had an aftermarket distributor cap. My car blew up.
Isn't THAT 'proof positive' of ALWAYS following manufacturer reccomendations and ALWAYS using OEM parts?
I'm convinced if I had used Mobil1 that car would still be fine.
Should have had the Delco distributor cap, too.

Mobil1 protects your car from missed shifts, over revs and cosmic particle damage.