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HEI and distributor shield

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Old Dec 25, 2014 | 07:33 PM
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Default HEI and distributor shield

does anyone know if a large cap HEI distributor will fit under the stock chrome ignition shield? I don't have the shield but like the looks of them.
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Old Dec 25, 2014 | 08:07 PM
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Originally Posted by gator79
does anyone know if a large cap HEI distributor will fit under the stock chrome ignition shield? I don't have the shield but like the looks of them.
it will I have a 75 350 l48 no problem not cheap for the whole 9 yards kit.
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Old Dec 25, 2014 | 09:22 PM
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Originally Posted by sgtwallydog
it will I have a 75 350 l48 no problem not cheap for the whole 9 yards kit.
I don't understand this answer. Will the HEI fit in the original steel chrome plate housing?...don't understand not cheap for the whole 9 yards..does this mean all the other shield parts will fit also?

Thanks
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Old Dec 26, 2014 | 12:28 AM
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Originally Posted by 68/70Vette
I don't understand this answer. Will the HEI fit in the original steel chrome plate housing?...don't understand not cheap for the whole 9 yards..does this mean all the other shield parts will fit also?

Thanks
I am sorry. I have a 1975 vette with L48 V8 350 cubic inch engine. I have a distributer by MSD The stock HEI dist matches the MSD aftermart unit. All my stock sheet metal covers and protection shields will fit. I am assuming you have a 1979. If carb fed fuel system the sheet metal cover kit should fit your engine. I also was commenting on the cost of obtaining the complete OEM style shielding kit. OK
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Old Dec 26, 2014 | 12:37 AM
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my car is a 71 with a 454 and I just did not like the look of the big HEI dist.
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Old Dec 26, 2014 | 12:38 AM
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Originally Posted by 68/70Vette
I don't understand this answer. Will the HEI fit in the original steel chrome plate housing?...don't understand not cheap for the whole 9 yards..does this mean all the other shield parts will fit also?

Thanks
So you live in Torrance. I lived in Hermosa Beach for 39 years. Do you have 2 vettes? 68/70. I think the HEI ignition ignited around 1973/74. Know?
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Old Dec 26, 2014 | 12:44 AM
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Originally Posted by gator79
my car is a 71 with a 454 and I just did not like the look of the big HEI dist.
Gator, I do not know about the BB in 71. But I believe HEI ignitions were introduced in 73. I COULD BE WRONG. Anyone know fersure?
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Old Dec 26, 2014 | 12:50 AM
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Originally Posted by sgtwallydog
Gator, I do not know about the BB in 71. But I believe HEI ignitions were introduced in 73. I COULD BE WRONG. Anyone know fersure?
my GM HEI is not original
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Old Dec 26, 2014 | 06:51 AM
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[QUOTE=But I believe HEI ignitions were introduced in 73. I COULD BE WRONG. Anyone know fersure?[/QUOTE]

Introduced in 75 as part of the catalytic converter package.

Martin
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Old Dec 26, 2014 | 09:40 AM
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Originally Posted by Yankeededandy
Introduced in 75 as part of the catalytic converter package.

Martin
That's correct ( 75 ) and a welcome change from the points system.
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Old Dec 26, 2014 | 10:26 AM
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The 75 to 77 chrome top shield is larger to accommodate the HEI, the earlier ones will not fit. Also the 75 air cleaner has a dented in section on the rear due the HEI and cover.
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Old Dec 27, 2014 | 08:28 AM
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Originally Posted by '75
...The 75 to 77 chrome top shield is larger to accommodate the HEI, the earlier ones will not fit. Also the 75 air cleaner has a dented in section on the rear due the HEI...
Correct.
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Old Dec 27, 2014 | 11:41 PM
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Originally Posted by '75
The 75 to 77 chrome top shield is larger to accommodate the HEI, the earlier ones will not fit. Also the 75 air cleaner has a dented in section on the rear due the HEI and cover.
Thanks...Great to know. I'll look into this...it'd be cool to have a shielded HEI!!
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Old Dec 27, 2014 | 11:49 PM
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Originally Posted by sgtwallydog
So you live in Torrance. I lived in Hermosa Beach for 39 years. Do you have 2 vettes? 68/70. I think the HEI ignition ignited around 1973/74. Know?
Thanks for the comment. However, I have a ZZ4 in my 68 and the ZZ4 has an HEI distributor. The 70 is a project car. As of now the 70 has an all aluminum Keith Black BB with Brodix aluminum heads. Current plans are for a HEI in it also. BYW The HEI distributor in the 68 has a mechanical tach drive.

You live in Ventura? I drove my 08 to Ventura to A&A Surperchargers. I had a centrifugal supercharger installed. Unfortunately, Andy Green's supercharger kits only fit C5, C6, and C7's. It'd be great to get one of these under the hood of a C3.
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Old Dec 28, 2014 | 12:18 AM
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The Shields were built for Small Block Corvette engines from 1968 on. The original Shields fit from 1968 and on. The uprights but had different brackets to hold in some years.

They never had them on the big block engines because the wires ran over top the Valve Covers to the Plugs. Small Blocks had really long wires so they would run down around the exhaust manifolds instead of above them. They not only hid the wires but also protected the wires on Small Blocks because of the way the Exhaust manifolds mounted to these engines. Like anything else you could probably figure out a way to make it work with some custom mounts.
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Old Dec 28, 2014 | 12:22 AM
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Originally Posted by '75
The 75 to 77 chrome top shield is larger to accommodate the HEI, the earlier ones will not fit. Also the 75 air cleaner has a dented in section on the rear due the HEI and cover.
Thanks...Great to know. I'll look into this...it'd be cool to have a shielded HEI!!
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Old Dec 28, 2014 | 01:02 AM
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Originally Posted by MakoJoe
The Shields were built for Small Block Corvette engines from 1968 on. The original Shields fit from 1968 and on. The uprights but had different brackets to hold in some years.

They never had them on the big block engines because the wires ran over top the Valve Covers to the Plugs. Small Blocks had really long wires so they would run down around the exhaust manifolds instead of above them. They not only hid the wires but also protected the wires on Small Blocks because of the way the Exhaust manifolds mounted to these engines. Like anything else you could probably figure out a way to make it work with some custom mounts.
Actually the early big block cars had the same "box" covering the distributor, and braided stainless sleeves over the individual spark plug wires that ran over the valve covers. The sleeves were grounded, so the big block cars had full ignition shielding too.

Pete
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Old Dec 29, 2014 | 12:31 AM
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Originally Posted by PeteZO6
Actually the early big block cars had the same "box" covering the distributor, and braided stainless sleeves over the individual spark plug wires that ran over the valve covers. The sleeves were grounded, so the big block cars had full ignition shielding too.

Pete
But the big block went away when the HEI came out so thr BB shielding was never modified to accommodate the HEI.

Tom...
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Old Dec 29, 2014 | 12:42 AM
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Originally Posted by Tom73
But the big block went away when the HEI came out so thr BB shielding was never modified to accommodate the HEI.

Tom...
That's right....shield is still to small to accommodate the HEI cap . It's a tight fit with the points as it .

The 75 had a different Ir cleaner than74 . I had one , they appeared the same , but when you put the 75 cleaner on the 74 , the 74 BB ring slots do not align up with the snorkels . The little tab on the inside back of 75 cleaner is punched out different , this interfers with the 74 lid seal ring assembly. It's kinda hArd to picture . But I had both.....I sold the 75 air cleaner.

75 air cleaner had the huge dings beat into the back to make room for the HEI....looked like with a hammer job to me........it was NOS in. GM box . Gone now,
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