I Need Help With This - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MITCH1914 · 04-08-2003, 12:16 PM

i am looking to adding some more spark to my ignition. i have a stock gm electronic inginition now i hear that they put out about 38,000 volts. i would like to get up to 45-50 thousand volts. what should i do to get there?

msd 6a? aftermarket coil? i am open to all suggestions

O'l Buck · 04-08-2003, 12:43 PM

I could be wrong here, it's been awhile since tech school, but there I'm thinking they told us that GM's HEI puts 120,000 volts under the hood.....it was even the title of one of the videos they showed.

Blue68 · 04-08-2003, 05:52 PM

Go with an aftermarket coil and module. Most you will get out of HEI will be in the 45,000 volt range.

My .02 cents is install a solid HEI that's in good tune with quality wires and spend your money upgrading elsewhere UNLESS you have high compression and/or run higher octane or higher RPMS. But that's just me.

Jesse 67 c-10 · 04-08-2003, 06:09 PM

Anybody here whos running fuel injection, I know there are a few, have a crank trigger setup? What type of distributor/setup is on the tpi and tbi setups? because their advance is puter controlled. The hei is good but is almost 30 years old. most cars now don't have a distributor, its all high resolution optical triggers and coils for each cylinder. You can only gain hp, torque and gas milage by improving!
Jesse

MITCH1914 · 04-09-2003, 08:15 AM

thanks for the feedback fellas. i think i will go with the aftermarket coil and module that was suggested.

04-08-2003, 12:16 PM	#1
MITCH1914 Registered User Join Date: Mar 2001 Location: indianapolis,indiana,usa Posts: 506	I Need Help With This i am looking to adding some more spark to my ignition. i have a stock gm electronic inginition now i hear that they put out about 38,000 volts. i would like to get up to 45-50 thousand volts. what should i do to get there? msd 6a? aftermarket coil? i am open to all suggestions

04-08-2003, 12:43 PM	#2
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	I could be wrong here, it's been awhile since tech school, but there I'm thinking they told us that GM's HEI puts 120,000 volts under the hood.....it was even the title of one of the videos they showed. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-08-2003, 05:52 PM	#3
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	Go with an aftermarket coil and module. Most you will get out of HEI will be in the 45,000 volt range. My .02 cents is install a solid HEI that's in good tune with quality wires and spend your money upgrading elsewhere UNLESS you have high compression and/or run higher octane or higher RPMS. But that's just me. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

04-08-2003, 06:09 PM	#4
Jesse 67 c-10 Registered User Join Date: Feb 2000 Location: Edmonton, Alberta, Canada Posts: 599	Anybody here whos running fuel injection, I know there are a few, have a crank trigger setup? What type of distributor/setup is on the tpi and tbi setups? because their advance is puter controlled. The hei is good but is almost 30 years old. most cars now don't have a distributor, its all high resolution optical triggers and coils for each cylinder. You can only gain hp, torque and gas milage by improving! Jesse __________________ Edmonton, Alberta, 67 c-10, Long fleet, front disks, 5 lug rear end, 327 with Vortechs, edlbrock manifold, comp cams XE 256, 600cfm carb. Backed by a getrag 5 speed and 1 piece driveshaft. 1993 Dihatsu Hijet Jumbo cab 4x4, currently converting to battery electric power.

04-09-2003, 08:15 AM	#5
MITCH1914 Registered User Join Date: Mar 2001 Location: indianapolis,indiana,usa Posts: 506	thanks thanks for the feedback fellas. i think i will go with the aftermarket coil and module that was suggested.



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