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Old 02-11-2018, 04:12 PM   #1
VetteC10
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Replacement Distributor

Hi, new the forum, I just purchased a 66 C10 with a 327, and looking to replace the distributor with an upgraded electronic model. I tried an HEI and a Petronix, and neither would fit due to firewall clearance. Does anyone know what brand/model will clear the firewall?

Thanks in advance.
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Old 02-11-2018, 06:22 PM   #2
Palf70Step
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Re: Replacement Distributor

I had a factory HEI and a replacement from Speedway in my 64. I could not put it in with the cap on though. Once in place , I could put cap on and had clearance. It was close, but never hit. Just could not insert or remove it with the caps inplace.
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Old 02-11-2018, 06:25 PM   #3
VetteC10
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Re: Replacement Distributor

I removed the cap and rotor on both the HEI and the Petronix, and both are hitting the firewall. the HEI almost got in if I wanted to force it, but the petronix is longer, and I can't even get the shaft down into the hole.
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Old 02-11-2018, 06:36 PM   #4
jayoldschool
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Re: Replacement Distributor

Use the stock distributor, small cap, and use an internal Pertronix kit. That's exactly what I did on my 65 327 in my Impala. Works perfectly, I run much more advance, starts immediately, has much more power. I'm still on points on my 65 truck, but will switch it over some time.
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Old 02-11-2018, 07:02 PM   #5
VetteC10
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Re: Replacement Distributor

I was considering that. the distributor i took out looks like it has an older conversion in it, but since I bought it not running, was wanting to upgrade if possible.
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Old 02-11-2018, 07:02 PM   #6
sprinter11r
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Re: Replacement Distributor

I have a 64 with HEI and no clearance problems. could your cab mount bushings be collapsed?
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Old 02-11-2018, 07:05 PM   #7
65chevysub
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Re: Replacement Distributor

I did the same as jayoldschool did. I used a stock distributor with the Pertronix ob my 65 Subyrban with a 283. Been running that way for atleast 20 years. Hard to believe I know but its still going.
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Old 02-11-2018, 07:06 PM   #8
Macdaddy1
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Re: Replacement Distributor

I have a 327 in my 65 and have to take the cap off to install distributor and then put cap on afterward. It is tight but just makes it.
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Old 02-11-2018, 07:13 PM   #9
VetteC10
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Re: Replacement Distributor

good question about the cab bushings. I almost had the HEI in, but since it was new, I didn't want to bag it up (or the firewall) forcing it. I didn't need much more space to get it in, so maybe the cab bushings are the cause. I am sure they are old.
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Old 02-11-2018, 09:39 PM   #10
jayoldschool
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Re: Replacement Distributor

A third option is the F body or the S10 small cap remote coil HEI.
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