L67 coil packs

[m_dogg]

Is it better to stick with stock coil pack for L67 motor or is the MSD uprade worth extra $$?

MSD specs:

Primary Resistance: 0.35 ohms
Secondary Resistance: 7.8K ohms
Maximum Voltage: 40,000 volts
Inductance: 4.2 mH
Turns Ratio: 80:1

Click to read more...

 

[PANDA]

I heard running MSD coils is useless and not worth the money.

 

[DanJ]

I've ran both and didn't notice a difference. I am actually back on the stock coil packs now and thinking about selling the MSD's.

 

[framos242]

Stick with stock coils.

 

[Bob Kazamakis]

stock. ive heard the msd's actually cause issues.

 

[m_dogg]

Well, I might as well put those up 4 sale ;-D

 

[DanJ]

The resistance on the primary coils of the MSD's is significantly lower than the stock coils.

 

[Bob Kazamakis]

says you woman.

 

[DanJ]

Can you take me higher?

 

[m_dogg]

I've ran both and didn't notice a difference. I am actually back on the stock coil packs now and thinking about selling the MSD's.

I just switched back to stock coils myself...couldnt tell the difference

 

[Sinister Drag Designs]

If you can get a set of low mileage or new L32/26 coil packs I would get those.

 

[Alacran]

MSD coil packs are designed to the NA engine spec NOT for the L67 or supercharged 3800.

 

[daturbosix]

MSD coil packs are designed to the NA engine spec NOT for the L67 or supercharged 3800.

thats the problem, the ignition systems between, n/a and the L67 are the same, so in theory, you want more spark in a boosted application. unfortunatly the msd coils are not the answer.

 

[Alacran]

thats the problem, the ignition systems between, n/a and the L67 are NOT the same, so in theory, you want more spark in a boosted application. unfortunatly the msd coils are not the answer.

Fixed. NA and Supercharged 3800 use different coils.

 

[daturbosix]

then whats the difference? can you find specs on each?

 

[02BlueGT]

thats the problem, the ignition systems between, n/a and the L67 are the same, so in theory, you want more spark in a boosted application. unfortunatly the msd coils are not the answer.

Fixed. NA and Supercharged 3800 use different coils.

then whats the difference? can you find specs on each?

If anything, there may be a difference in the driver, but it is more cost effective for them to share the same coils, so I don't see why they would be different........My L36 coils work fine in a car under boost BTW

 

[Turbocharged400sbc]

iirc there were diffferent part numbers for the na and sc cars till 00 or 01 then they used the same coils for both after that...the old na part numbers were the same p#'s as the older DIS 2.8's, 3.1's, 3x00's....i've put the older 3100coils of a SC 3800 and had missfire issues...mighta been a bad coil but the motor i tooke em off of ran fine with em (the 3100 original tot he 442)

 

[02BlueGT]

iirc there were diffferent part numbers for the na and sc cars till 00 or 01 then they used the same coils for both after that...the old na part numbers were the same p#'s as the older DIS 2.8's, 3.1's, 3x00's....i've put the older 3100coils of a SC 3800 and had missfire issues...mighta been a bad coil but the motor i tooke em off of ran fine with em (the 3100 original tot he 442)

interesting

 

[daturbosix]

i called up a couple parts stores today, and the coils for both boosted and NA were the same... just sayin...

 

[Turbocharged400sbc]

they are undoubtedly superceded by the newer part number... check the GM part number on the coils next time your in a Jyard...

 

[Alacran]

i called up a couple parts stores today, and the coils for both boosted and NA were the same... just sayin...

you cant believe everything you read in book/catalogue. The point is at one point they were different and the MSD coils are designed for NA application. Just paint your L67 coils.

 

[m_dogg]

My stock coils are on, MSD - sold

 

[Turbocharged400sbc]

i just double checked....the old NA part number has yellow plastic inserts where the primary electrical connections are...the newer units are blue