Home page
  Active Threads   Forum Search   Top Posters List   Private Messenger   Vette Registry Email System   Corvette Quiz
  Members Vettes & Pictures   Member Stories   Member Stats   Real Time Member Map   Member Search   Lifetime Member List   Member Calendar Entry Form   Who's Online
  Vette Registry Data   Corvette Statistics   Corvette Tips & Tricks   Corvette How-Tos   Corvette Club Directory   Corvette Events Calendar   Corvette Mechanic Directory   Corvette VIN Decoder   Save the Wave   Corvette Emblem History   C3 Corvette Birthday Calculator   C3 Corvette Build Dates & Trim Tag Codes   1953-1982 Corvette Parts & Illustration Catalog
  Corvette Parts Auctions on eBay   Corvette Books   Vette Registry In-Stock Apparel & Accessories   Vette Registry Member Name Badges   Vette Registry Custom Apparel & Accessories @ Zazzle   Vette Registry Window Stickers   Vette Registry Member Calendars   Shop Amazon.com
  Our History   Advertise with Us   Sponsor List   Link to Us   Compare Levels   Member Agreement   Terms of Service   Privacy Policy   Contact Us
☰

HEI Module upgrade

Forum: C3 Engines, Driveline and Handling

8 Messages
Page 1 of 1
Share:
Sponsored Content
Don't Miss Out!
Join us for our 2026 Vette Registry Member Gathering! Click for full details.

Already a Member?

Welcome back! Access your account.

Sign In

Not yet a Member?

Join our community! Registration is free.

Join Free

HEI Module upgrade

Posted: 5/15/05 7:10pmMessage 1 of 8
N
NuclearBob
Former Member
Send PM
BURBANK, WA - USA
Joined: 12/21/2004
Posts: 59
Vette(s): 1981 Frost Beige Coupe... all original.. My SECOND Love...

I'm upgrading my cap, rotor and coil to handle a higher voltage.  I have already done wires and plugs.  My question is this:

Do I have to change out the HEI module in the distributor with one that is rated for the higher voltage, or can I retain the stock unit.  This is a 1981 HEI with the 7 pin HEI module.

Thanks!

Carl

Be the first to like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)

HEI Module upgrade

Posted: 5/15/05 7:28pmMessage 2 of 8
Profile Pic
Adams' Apple
Lifetime Member
Moderator
Send PM
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
What does the coil mfg. recommend? I would think it would be a good idea, but I doubt that you 'have to'. Now would be the time, tho. The module controls the saturation time of the coil, so a newer mod. that is compatable with the coil will be better, I think. Can you check with the coil mfg. for info on what would be best?

Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Be the first to like this post
Sign In to Like this post

HEI Module upgrade

Posted: 5/18/05 8:49pmMessage 3 of 8
A
After Shark
Former Member
Send PM
Portland, TN - USA
Joined: 4/29/2003
Posts: 805
Vette(s): 1972 Coupe Anything, but Stock and more mods to come! SSBC Force 10 Brakes, 3.73, TH350, 355 CID, Rack and Pinion, Vette Brakes suspension front and rear.
Yes to take advantage of a hotter coil, you need a longer dwell time for the coil to build energy and a module that can release that energy.
Be the first to like this post
Sign In to Like this post

HEI Module upgrade

Posted: 5/18/05 9:15pmMessage 4 of 8
N
NuclearBob
Former Member
Send PM
BURBANK, WA - USA
Joined: 12/21/2004
Posts: 59
Vette(s): 1981 Frost Beige Coupe... all original.. My SECOND Love...

That's what I thought.  I ordered an Accel module from Summit.  Thanks for the advice!

Carl

Be the first to like this post
Sign In to Like this post

HEI Module upgrade

Posted: 5/19/05 5:16amMessage 5 of 8
S
Sixty Eight Shark
Former Member
Send PM
Sarasota, FL - USA
Joined: 5/16/2005
Posts: 41
Vette(s): 1968 LeMans Blue convertible / 4 speed / with a 1969 350/350hp engine,factory sidepipes, I added a AM/FM AC Delco 8 trax for feel THE 68 IS SOLD AND NOW I HAVE A '97 C-5 / 6 speed HELL OF A VETTE !!!!
I just changed my org. dist. to a Mallory daul point and a Accel Super Coil with Accel 300+ Racing Wires, It really woke up the tired 350. next- Hooker Headers with factory sidepipes.
Be the first to like this post
Sign In to Like this post

HEI Module upgrade

Posted: 5/19/05 9:12pmMessage 6 of 8
a
anips
Free Member
Send PM
sonoma, CA - USA
Joined: 8/9/2002
Posts: 784
Vette(s): 72 LT-1 AC coupe,69 l-36 coupe
you should buy your module and coil as a set, like a pair of shoes, don't try to mix and match brands and manufacturers, some don't work well with others
Be the first to like this post
Sign In to Like this post

HEI Module upgrade

Posted: 6/4/05 6:01pmMessage 7 of 8
S
Sixty Eight Shark
Former Member
Send PM
Sarasota, FL - USA
Joined: 5/16/2005
Posts: 41
Vette(s): 1968 LeMans Blue convertible / 4 speed / with a 1969 350/350hp engine,factory sidepipes, I added a AM/FM AC Delco 8 trax for feel THE 68 IS SOLD AND NOW I HAVE A '97 C-5 / 6 speed HELL OF A VETTE !!!!

Sorry, late post on this subject but the Mallory dis. and Accel coil came as a set on E-bay for $36.00 !!!!! I couldn't pass it up. It works great, you never know

Be the first to like this post
Sign In to Like this post

HEI Module upgrade

Posted: 6/4/05 7:59pmMessage 8 of 8
a
anips
Free Member
Send PM
sonoma, CA - USA
Joined: 8/9/2002
Posts: 784
Vette(s): 72 LT-1 AC coupe,69 l-36 coupe
Glad to hear its working out, but sometimes they don't, happy motoring
Be the first to like this post
Sign In to Like this post
Share:

in Forum: C3 Engines, Driveline and Handling


Sponsored Content