recommended coils?
Thread Starter
Joined: Jan 2007
Posts: 976
Likes: 4
From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
recommended coils?
what coils do you guys recommend.. the car is stock.. but a chip may be in the future.
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: recommended coils?
For the stock HEI, AC Delco stock replacement coil or equivalent.
If you ever do get serious about performance mods, you can install a hot coil like the MSD with an MSD ignition box to drive the hot coil. Aftermarket performance coils run too high primary current to run reliably with the HEI ignition module, in a stock configuration. They cause the module to overheat and fail prematurely. The only real solution to this is to use the coil driver output of the HEI to run an ignition amplifier like the MSD box. The MSD box is designed for high primary current and will make much better use of the high output coil.
I run the MSD Digital 6 myself and love the rev limiter.
If you ever do get serious about performance mods, you can install a hot coil like the MSD with an MSD ignition box to drive the hot coil. Aftermarket performance coils run too high primary current to run reliably with the HEI ignition module, in a stock configuration. They cause the module to overheat and fail prematurely. The only real solution to this is to use the coil driver output of the HEI to run an ignition amplifier like the MSD box. The MSD box is designed for high primary current and will make much better use of the high output coil.
I run the MSD Digital 6 myself and love the rev limiter.
Thread Starter
Joined: Jan 2007
Posts: 976
Likes: 4
From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended coils?
i think i had a mallory ignition high heat coil on my 92.. i needed it for the chip iirc.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: recommended coils?
O'Reillys Auto Parts sells "BWD" brand made by "Standard Auto Parts".
It a nice dependable stock replacement.
I use a lot of BWD (Borg Warner Division) electronic/electrical components and have never had a problem.
Anything made by "Standard" is a nice stock replacement.
Used the Accel Super coil before that and cant tell the difference between the two.
Link = http://www.oreillyauto.com/site/c/se...make=Chevrolet
It a nice dependable stock replacement.
I use a lot of BWD (Borg Warner Division) electronic/electrical components and have never had a problem.
Anything made by "Standard" is a nice stock replacement.
Used the Accel Super coil before that and cant tell the difference between the two.
Link = http://www.oreillyauto.com/site/c/se...make=Chevrolet
Thread Starter
Joined: Jan 2007
Posts: 976
Likes: 4
From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended coils?
the differences in price u cud tell though i bet lol.. but yeah usually u can't tell but for some reason i needed a certain coil for the chip.
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: recommended coils?
What chip are you planning on using? My opinion of chips that claim to increase power from an otherwise stock engine isn't high.
I may be old school but my experience is that, aside from turbo charged applications where boost can be altered via ECM programming, there is little gain to be had and a fair amount of harm to be done reprogramming an ECM, unless it is to recalibrate the ECM for a motor that has been mechanically modified to increase power output.
Any real power gain has to start in the motor, periferral changes without internal upgrades are of limited value. JMO
I may be old school but my experience is that, aside from turbo charged applications where boost can be altered via ECM programming, there is little gain to be had and a fair amount of harm to be done reprogramming an ECM, unless it is to recalibrate the ECM for a motor that has been mechanically modified to increase power output.
Any real power gain has to start in the motor, periferral changes without internal upgrades are of limited value. JMO
Thread Starter
Joined: Jan 2007
Posts: 976
Likes: 4
From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended coils?
yeah u cud be right .. i don't go crazy with the chip, i just get a jet stage II which eliminates the speed limiter.
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Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: recommended coils?
Cool. If you ever decide to really make performance improvements, there are a few options available for a user programmable ECM. Then you can do your own tuning as needed.
Joined: Jul 1999
Posts: 12,096
Likes: 126
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: recommended coils?
What chip are you planning on using? My opinion of chips that claim to increase power from an otherwise stock engine isn't high.
I may be old school but my experience is that, aside from turbo charged applications where boost can be altered via ECM programming, there is little gain to be had and a fair amount of harm to be done reprogramming an ECM, unless it is to recalibrate the ECM for a motor that has been mechanically modified to increase power output.
Any real power gain has to start in the motor, periferral changes without internal upgrades are of limited value. JMO
I may be old school but my experience is that, aside from turbo charged applications where boost can be altered via ECM programming, there is little gain to be had and a fair amount of harm to be done reprogramming an ECM, unless it is to recalibrate the ECM for a motor that has been mechanically modified to increase power output.
Any real power gain has to start in the motor, periferral changes without internal upgrades are of limited value. JMO
Frankly, I doubt many 25+ year old engines are even making factory power anymore.
-- Joe
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
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