HEI - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dion · 04-19-2002, 02:08 PM

What are some of the benefits of the HEI compard to Pertronix? Right now I'm using the Pertronix set up, it seems to work fine but I'm thinking about switching to HEI.

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72 Cheyenne C20
Built 350/T350
AC/PS/PB/AT
Dana60 Leaf
Factory Saddle Tanks
San Diego, CA

Pics of My Truck
<A HREF="http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src=
ph&.last=1" TARGET=_blank>http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src=
ph&.last=1</A>

lofly'a · 04-19-2002, 08:16 PM

they work basically the same way. the only advantage i can think of is with HEI, you can find parts at any auto supply store.

Longhorn Man · 04-19-2002, 08:28 PM

The Pertronix is a pretty good upgrade, bery dependable, very inexpensive, and does the same thing as HEI, but that was a good point. You'll have to order stuff if your Pertronix goes bad...HEI, you can get at the junk yard if your hurting for cash.

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'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

dion · 04-19-2002, 10:03 PM

Will it run any better?

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72 Cheyenne C20
Built 350/T350
AC/PS/PB/AT
Dana60 Leaf
Factory Saddle Tanks
San Diego, CA

Pics of My Truck
<A HREF="http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src=
ph&.last=1" TARGET=_blank>http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src=
ph&.last=1</A>

69 longhorn · 04-19-2002, 10:09 PM

I dont think you will notice a diff in how the eng runs,with either setup. You can add a hotter coil to either setup,but other than parts availabilty,I dont see an advantage(as already posted,if you burn a module you can pick it up anywhere with the HEI)......69

Blazer1970 · 04-21-2002, 10:32 AM

Most likely, the Pertronix has a more aggresive timing curve than most junkyard HEIs you will find, so it is likely that performance would decrease if you went that route. If you did install an HEI, you should get a recurve kit to bring the timing in a little sooner than stock.

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Tim

lukecp · 04-21-2002, 10:45 AM

Unless you want it to look original, i would go with HEI. You can pick one up at a junkyard for $30 and add some hop-up parts pretty easily. You will have to get different plug wires with HEI though.

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Lucas

"Another proud owner of one of the coolest trucks ever built"

drop_shift@hotmail.com

My Daily-Driver: '72 Chevy LWB Custom/10. Rebuilt 350, 300 HP thanks to a few go-fast goodies. Ochre with a white top. Future plans include TBI fuel injection, a 700R4 tranny, and possibly some 3.73 rear gears.

04-19-2002, 02:08 PM	#1
dion 72 Cheyenne Join Date: Oct 2001 Location: San Diego Posts: 2,086	HEI What are some of the benefits of the HEI compard to Pertronix? Right now I'm using the Pertronix set up, it seems to work fine but I'm thinking about switching to HEI. ------------------ 72 Cheyenne C20 Built 350/T350 AC/PS/PB/AT Dana60 Leaf Factory Saddle Tanks San Diego, CA Pics of My Truck <A HREF="http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src= ph&.last=1" TARGET=_blank>http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src= ph&.last=1</A> __________________ Burnout Idle 1972Cheyenne 1966/67Stouts

04-19-2002, 08:16 PM	#2
lofly'a Registered User Join Date: May 2000 Location: Alexandria, LA 71301 Posts: 1,451	they work basically the same way. the only advantage i can think of is with HEI, you can find parts at any auto supply store. __________________ -02 avalanche (daily driver) -66 gto ragtop 389/400 (garage queen, hand-me-down from dad) -72 Tribute Trans Am (6.0LS/T56 6-speed) in progress -2003 YUKON (Wife's) -71 gmc swb fleet (current project, gonna shave everything, bags, stuff w/ 20's, gen III powertrain) -48 3100 SWB - 12/31/23 LONG TERM Project

04-19-2002, 10:03 PM	#4
dion 72 Cheyenne Join Date: Oct 2001 Location: San Diego Posts: 2,086	Will it run any better? ------------------ 72 Cheyenne C20 Built 350/T350 AC/PS/PB/AT Dana60 Leaf Factory Saddle Tanks San Diego, CA Pics of My Truck <A HREF="http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src= ph&.last=1" TARGET=_blank>http://photos.yahoo.com/bc/aikidojiujitsu/lst?.dir=/Chevy+Cheyenne+C20&.src= ph&.last=1</A> __________________ Burnout Idle 1972Cheyenne 1966/67Stouts

04-19-2002, 10:09 PM	#5
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	I dont think you will notice a diff in how the eng runs,with either setup. You can add a hotter coil to either setup,but other than parts availabilty,I dont see an advantage(as already posted,if you burn a module you can pick it up anywhere with the HEI)......69 __________________ http://community.webshots.com/user/hotrodhorn

04-21-2002, 10:32 AM	#6
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Most likely, the Pertronix has a more aggresive timing curve than most junkyard HEIs you will find, so it is likely that performance would decrease if you went that route. If you did install an HEI, you should get a recurve kit to bring the timing in a little sooner than stock. ------------------ Tim __________________ Tim

04-19-2002, 08:28 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	The Pertronix is a pretty good upgrade, bery dependable, very inexpensive, and does the same thing as HEI, but that was a good point. You'll have to order stuff if your Pertronix goes bad...HEI, you can get at the junk yard if your hurting for cash. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio

04-21-2002, 10:45 AM	#7
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Unless you want it to look original, i would go with HEI. You can pick one up at a junkyard for $30 and add some hop-up parts pretty easily. You will have to get different plug wires with HEI though. ------------------ Lucas "Another proud owner of one of the coolest trucks ever built" drop_shift@hotmail.com My Daily-Driver: '72 Chevy LWB Custom/10. Rebuilt 350, 300 HP thanks to a few go-fast goodies. Ochre with a white top. Future plans include TBI fuel injection, a 700R4 tranny, and possibly some 3.73 rear gears. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg



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