HEI coil in cap dizzys - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mexgrhd68 · 03-03-2008, 02:17 PM

I want to dump the pertronix kit and install a regular HEI dizzy but it seems like it wont fit my truck. It looks like it will hit the firewall the engine sits back on my truck. Is this normal? have a 305 in it . pics would be great.

JimKshortstep4x4 · 03-03-2008, 03:03 PM

The HEI distributor fits nicely in the C-10 model trucks but in the K-10 trucks it is a very tight fit. The distributor wires will hit the firewall in the K-10's but you can still use them.

Here is a pic of an HEI in my son's 72 Burb 4x4. As seen in the pic it is a tight fit!

Jim

kaycee · 03-03-2008, 07:07 PM

I totally agree with Jim it is tight but they work none the less,I am running 1 in my 69 that is slid back in the 6cyl. mount location.

mexgrhd68 · 03-05-2008, 01:32 AM

Quote:

Originally Posted by JimKshortstep4x4

The HEI distributor fits nicely in the C-10 model trucks but in the K-10 trucks it is a very tight fit. The distributor wires will hit the firewall in the K-10's but you can still use them.

Here is a pic of an HEI in my son's 72 Burb 4x4. As seen in the pic it is a tight fit!

Jim

I guess I would have to stick the dizzy in there without the cap on it first, right??

Ole Blue 68 · 03-05-2008, 03:59 AM

I think MSD's got a low profile model that might make it easier. Probably not cheap though...

Sport/Truck · 03-03-2008, 07:22 PM

Quote:

Originally Posted by mexgrhd68

I want to dump the pertronix kit and install a regular HEI dizzy but it seems like it wont fit my truck. It looks like it will hit the firewall the engine sits back on my truck. Is this normal? have a 305 in it . pics would be great.

why do you want to get rid of it? I'm wanting to replace my new HEI with a pertronics or something similar.
s/t

mexgrhd68 · 03-05-2008, 01:28 AM

Quote:

Originally Posted by Sport/Truck

why do you want to get rid of it? I'm wanting to replace my new HEI with a pertronics or something similar.
s/t

because it took a mean S@#$!!, and I've only had it for about 2 years. I think the original HEI's last way longer than that and I can't see myself replacing this darn thing every 2 years. waiting for 1/2 price sale at my local pick a part to go hunt for one.

Longhorn Man · 03-03-2008, 09:39 PM

your 305 is in the 6 clyinder location... or 4X4 location... either way to word it, it's the same holes.
It'll fit back there, but it's tight.
Go for it, best thing you can do IMO.

bglad420 · 03-03-2008, 10:19 PM

I have one on my 402BB no clearence issues.

**WorkinLonghorn** · 03-05-2008, 04:31 AM

Quote:

I guess I would have to stick the dizzy in there without the cap on it first, right??

Right,well you'd do that anyway because you need to see the rotor as you lower the disrtib into it's final position,to make sure it's pointing where you want it (#1 or wherever it was when you removed the old one).

Longhorn Man · 03-05-2008, 05:57 AM

The main advantage to the GM unit IMO, is any parts store will have the parts on hand. No one will have the aftermarket stuff.

mexgrhd68 · 03-06-2008, 10:31 PM

just wondering, do these trucks run a ballast resistor to go to the coil or is this just for the earlier trucks?? If so, pics would be nice to show how to connect with pertronix kit if I decide to keep this in.

**El Jay** · 03-17-2008, 08:46 AM

Quote:

Originally Posted by mexgrhd68

just wondering, do these trucks run a ballast resistor to go to the coil or is this just for the earlier trucks?? If so, pics would be nice to show how to connect with pertronix kit if I decide to keep this in.

I had the impression that the HEI units ran 12 V, w/out any resistor (resistor wire).

If I'm wrong, please correct me.

ckhd · 03-30-2008, 09:13 PM

Quote:

Originally Posted by El Jay

I had the impression that the HEI units ran 12 V, w/out any resistor (resistor wire).

If I'm wrong, please correct me.

You are not wrong. HEI units run best on full voltage, not the reduced voltage used for a points distributor. I typically re-run ignition wiring so that the original 9V-ish ignition wire engages an ignition relay that supplies full battery voltage to the HEI distributor.

mexgrhd68 · 03-07-2008, 03:03 AM

Quote:

Originally Posted by Longhorn Man

The main advantage to the GM unit IMO, is any parts store will have the parts on hand. No one will have the aftermarket stuff.

very, very true. I think I'm going hunting.

mexgrhd68 · 03-07-2008, 03:06 AM

love this web site, all info is always right on the money!!!

Longhorn Man · 03-07-2008, 02:35 AM

the resistor is built into the wire on these trucks.

chevy one · 03-07-2008, 03:23 AM

The HEI is the way to go on these trucks. I have been buying complete units off the net for $55-60 shipped to my door. These are overseas units (china) have one running in it second year now with no problems. Just my 2 cents!!!

mexgrhd68 · 03-07-2008, 01:07 PM

Quote:

Originally Posted by chevy one

The HEI is the way to go on these trucks. I have been buying complete units off the net for $55-60 shipped to my door. These are overseas units (china) have one running in it second year now with no problems. Just my 2 cents!!!

u getting them off ebay? if so, can u please give sellers name to look at? maybe I'll get one.

Sport/Truck · 03-07-2008, 11:56 PM

Quote:

Originally Posted by mexgrhd68

u getting them off ebay? if so, can u please give sellers name to look at? maybe I'll get one.

Most are getting them from Skip White

http://stores.ebay.com/whiteperformance1

s/t

cstanley · 03-08-2008, 03:31 AM

Quote:

Originally Posted by Sport/Truck

Most are getting them from Skip White

http://stores.ebay.com/whiteperformance1

s/t

any idea whether that one will fit in 4x4 blazer?

Also, I am still unclear: yes or no, The HEI dizzy can be physically installed in a 4x4 k5 without engine removal? Can I get it in there by myself from the top, or do I have to slide the engine fwd to do it? bone stock, no body lift.

Thanks!

**jamie72** · 03-08-2008, 07:12 AM

Quote:

Originally Posted by cstanley

any idea whether that one will fit in 4x4 blazer?

Also, I am still unclear: yes or no, The HEI dizzy can be physically installed in a 4x4 k5 without engine removal? Can I get it in there by myself from the top, or do I have to slide the engine fwd to do it? bone stock, no body lift.

Thanks!

got one in my blazer, one of the first things i did to it, you might need to install the dizzy then the cap, and yes the wires do touch the firewall, but i have no prolbems in 3-4 years since i installed it.

Longhorn Man · 03-08-2008, 07:18 AM

I have a skip white HEI on the burb... only 5,000 miles or so... maybe more.. but it's been flawless.

crazy longhorn · 03-08-2008, 07:41 AM

Call me cheap.....I have an old cast iron dist (mid 60's 283) in my 383. With a recurve/adjustable vac advance, Pertronix Ignitor, & plugged to an ACCEL super coil......I have seen that motor run 7200, & not skip a beat

. Pertronix had a couple different ignitors . The lobe sensor was a little sensative to too much voltage(liked 8 or 9 volts on the resistor wire). The "flying magnet" setup runs full battery voltage (said to work from 8 - 16 volts), & is a pretty nice pc. You can run the hei, & the only plus I see is that if you breakdown on the road, parts are available (pretty much anywhere)......or you can run what you have,& toss a spare in the glove box. If you break down on the road, you can swap it out , as easy as swaping points/condensor....crazyL

Sport/Truck · 03-08-2008, 07:56 AM

Quote:

Originally Posted by Longhorn Man

I have a skip white HEI on the burb... only 5,000 miles or so... maybe more.. but it's been flawless.

Thats good to hear, thats what I have to use in mine!

If there is a failure will other HEI parts fit? just wondering, I'm thinking of getting a spare module to keep in the glove box.
s/t

03-03-2008, 03:03 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: HEI coil in cap dizzys The HEI distributor fits nicely in the C-10 model trucks but in the K-10 trucks it is a very tight fit. The distributor wires will hit the firewall in the K-10's but you can still use them. Here is a pic of an HEI in my son's 72 Burb 4x4. As seen in the pic it is a tight fit! Jim Attached Images __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

03-03-2008, 07:07 PM	#3
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,446	Re: HEI coil in cap dizzys I totally agree with Jim it is tight but they work none the less,I am running 1 in my 69 that is slid back in the 6cyl. mount location. __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

03-05-2008, 03:59 AM	#5
Ole Blue 68 Registered User Join Date: Aug 2005 Location: Philly Posts: 1,140	Re: HEI coil in cap dizzys I think MSD's got a low profile model that might make it easier. Probably not cheap though... Last edited by Ole Blue 68; 03-05-2008 at 04:01 AM. Reason: Wrong link

03-03-2008, 09:39 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: HEI coil in cap dizzys your 305 is in the 6 clyinder location... or 4X4 location... either way to word it, it's the same holes. It'll fit back there, but it's tight. Go for it, best thing you can do IMO.

03-03-2008, 10:19 PM	#9
bglad420 Registered User Join Date: Dec 2005 Location: Bellingham, WA Posts: 167	Re: HEI coil in cap dizzys I have one on my 402BB no clearence issues. __________________ 70 GMC LWB Fleetside, 402BB, TH400 90K original only cost $50.

03-03-2008, 02:17 PM	#1
mexgrhd68 Registered User Join Date: Apr 2007 Location: Visalia, CA. Posts: 327	HEI coil in cap dizzys I want to dump the pertronix kit and install a regular HEI dizzy but it seems like it wont fit my truck. It looks like it will hit the firewall the engine sits back on my truck. Is this normal? have a 305 in it . pics would be great. __________________ 68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks ) 54 caddy 62 series 4 door(younger sons ride, aka 54caddy ) 70 caddy 2 door, 89 chevy silverado stepside(older sons rides )

03-05-2008, 05:57 AM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: HEI coil in cap dizzys The main advantage to the GM unit IMO, is any parts store will have the parts on hand. No one will have the aftermarket stuff.

03-06-2008, 10:31 PM	#12
mexgrhd68 Registered User Join Date: Apr 2007 Location: Visalia, CA. Posts: 327	Re: HEI coil in cap dizzys just wondering, do these trucks run a ballast resistor to go to the coil or is this just for the earlier trucks?? If so, pics would be nice to show how to connect with pertronix kit if I decide to keep this in. __________________ 68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks ) 54 caddy 62 series 4 door(younger sons ride, aka 54caddy ) 70 caddy 2 door, 89 chevy silverado stepside(older sons rides )

03-07-2008, 03:06 AM	#16
mexgrhd68 Registered User Join Date: Apr 2007 Location: Visalia, CA. Posts: 327	Re: HEI coil in cap dizzys love this web site, all info is always right on the money!!! __________________ 68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks ) 54 caddy 62 series 4 door(younger sons ride, aka 54caddy ) 70 caddy 2 door, 89 chevy silverado stepside(older sons rides )

03-07-2008, 02:35 AM	#17
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: HEI coil in cap dizzys the resistor is built into the wire on these trucks.

03-07-2008, 03:23 AM	#18
chevy one Chevy One Join Date: Nov 2006 Location: The BeeHive State Posts: 132	Re: HEI coil in cap dizzys The HEI is the way to go on these trucks. I have been buying complete units off the net for $55-60 shipped to my door. These are overseas units (china) have one running in it second year now with no problems. Just my 2 cents!!! __________________ Chevy One 67 1/2 Two-on-the-Floor 67 Nova 2Dr Sedan 03 Monte Carlo I'M NOT OLD, JUST A CLASSIC!!!

03-08-2008, 07:18 AM	#23
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: HEI coil in cap dizzys I have a skip white HEI on the burb... only 5,000 miles or so... maybe more.. but it's been flawless.

03-08-2008, 07:41 AM	#24
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Re: HEI coil in cap dizzys Call me cheap.....I have an old cast iron dist (mid 60's 283) in my 383. With a recurve/adjustable vac advance, Pertronix Ignitor, & plugged to an ACCEL super coil......I have seen that motor run 7200, & not skip a beat . Pertronix had a couple different ignitors . The lobe sensor was a little sensative to too much voltage(liked 8 or 9 volts on the resistor wire). The "flying magnet" setup runs full battery voltage (said to work from 8 - 16 volts), & is a pretty nice pc. You can run the hei, & the only plus I see is that if you breakdown on the road, parts are available (pretty much anywhere)......or you can run what you have,& toss a spare in the glove box. If you break down on the road, you can swap it out , as easy as swaping points/condensor....crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

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