MSD multi spark box?
#1
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Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
MSD multi spark box?
im considering buying a MSD multi spark box for my TPI car. a 6 AL or something. im considering it mainly for the increase in MPGs that it might offer. I would like to hear from other members who have used this on a otherwise stock car. how did it do? were there other parts that had to be bought to realize its potential? did you get any better MPGs?:
#2
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Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: MSD multi spark box?
Nope waste of money.
Good tune clean fuel filter proper tire pressure etc and hope for the best.
MSD are not magic
If you have a power adder forced induction or a large by huge cam there can be a small benefit..I use one due to a cam with 81 deg overlap...and a rev limiter. One day it will let me down lol.
HEI and a good coil cant beat it for reliability.
Good tune clean fuel filter proper tire pressure etc and hope for the best.
MSD are not magic
If you have a power adder forced induction or a large by huge cam there can be a small benefit..I use one due to a cam with 81 deg overlap...and a rev limiter. One day it will let me down lol.
HEI and a good coil cant beat it for reliability.
#3
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Car: 1987 Chevrolet Camaro Iroc Z28
Engine: 383 Stroker supercharged.
Transmission: 5 speed manual transmission
Axle/Gears: 3.45 posi rear
Re: MSD multi spark box?
I have a full MSD ignition in mine and I like it. I think it's worth it. Just my personal opinion though.
#4
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: MSD multi spark box?
I have one on my TPI and one on my L31 Vortec engine. BOTH are worth it to me. Adding the MSD along with a slightly wider plug gap gave me a smoother idle in both and a noticeable increase in both low-end torque and throttle response. In both applications I was able to remove some fuel out of the VE/MAF tables due to a more complete burn.
#5
Senior Member
Re: MSD multi spark box?
Iv hit the rev limiter in my box a bunch of times-
part# 8xxx BIG blaster TPI coil is worth it on its own too
part# 8xxx BIG blaster TPI coil is worth it on its own too
#6
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Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
Re: MSD multi spark box?
I looked into this as well. The consensus seems to be that if it's a daily driver and/or you mount it under the hood, that the reliability of them is pretty bad. Numerous people report having them die within a year. Mounting them under the dashboard or under the seats removes the high heat aspect and prolongs life. Not being a daily driver helps too.
Mileage gain? Anywhere from 0 to 2 mpg.
I ultimately replaced everything ignition wise, but did not buy an MSD. Just went for a stock AC Delco coil and MSD cap/rotor. MSD plug wires, AC Delco sparkplugs.
Mileage gain? Anywhere from 0 to 2 mpg.
I ultimately replaced everything ignition wise, but did not buy an MSD. Just went for a stock AC Delco coil and MSD cap/rotor. MSD plug wires, AC Delco sparkplugs.
#7
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Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: MSD multi spark box?
I looked into this as well. The consensus seems to be that if it's a daily driver and/or you mount it under the hood, that the reliability of them is pretty bad. Numerous people report having them die within a year. Mounting them under the dashboard or under the seats removes the high heat aspect and prolongs life. Not being a daily driver helps too.
Mileage gain? Anywhere from 0 to 2 mpg.
I ultimately replaced everything ignition wise, but did not buy an MSD. Just went for a stock AC Delco coil and MSD cap/rotor. MSD plug wires, AC Delco sparkplugs.
Mileage gain? Anywhere from 0 to 2 mpg.
I ultimately replaced everything ignition wise, but did not buy an MSD. Just went for a stock AC Delco coil and MSD cap/rotor. MSD plug wires, AC Delco sparkplugs.
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#8
Member
Re: MSD multi spark box?
I've had my MSD-6AL in my daily driver IROC for about 10 yrs now, mounted under the hood, never had a problem, it's been rock-solid reliable. I also used the (optional) MSD 8876 wiring harness that adapts it to the factory dual-connector coil, made the installation wiring super-simple. yeah, you still have to crawl under the car and hook up the hot wire at the starter.
'90 IROC 5.7L TPI
'90 IROC 5.7L TPI
Last edited by RPOL98; 08-31-2014 at 04:01 AM.
#9
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Re: MSD multi spark box?
PepBoys has a 25% off online orders sale that ends today...
Pep25 is the code
I paid $179 form y MSD 6AL with Rev limiter 6425 (newer design, digital)
And about $35 for my 8226 GM Coil...
Out the door with tax $229, normally the MSD box itself is $239
I applied for a $25 rebate from MSD they are running through September, then I went to Square Trade and used a 40% off coupon for a 3 year warranty on the MSD Box too...
With Warranty minus Rebate, $232
I had a Digital 6 and coil before and it smoothed out the idle had plenty of power at high rpm...
Pep25 is the code
I paid $179 form y MSD 6AL with Rev limiter 6425 (newer design, digital)
And about $35 for my 8226 GM Coil...
Out the door with tax $229, normally the MSD box itself is $239
I applied for a $25 rebate from MSD they are running through September, then I went to Square Trade and used a 40% off coupon for a 3 year warranty on the MSD Box too...
With Warranty minus Rebate, $232
I had a Digital 6 and coil before and it smoothed out the idle had plenty of power at high rpm...
#10
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Car: 87 Iroc
Engine: modified 350
Transmission: high performance built 700R4
Axle/Gears: Strange S60 3:73
Re: MSD multi spark box?
Not worth the money on a stock car.There quality has gone down over the years.Had one a couple years back,it lasted 6 months.Tried the new digital Crane box. Again that one lasted about 6 months.A part that says made in America only has to have 75% of the parts actually made in America to be considered made in America.That's the law.
#11
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iTrader: (56)
Re: MSD multi spark box?
remember..GM also had MSD make boxes for them..and they do work... this is just 1. of many diff ones..
this one on ebay is still under $120 for the nexed few hrs
good deal...
GM did alot of biss with MSD.. and they still do..
this one on ebay is still under $120 for the nexed few hrs
good deal...
GM did alot of biss with MSD.. and they still do..
Last edited by articwhiteZ; 08-31-2014 at 02:36 PM.
#12
Senior Member
Re: MSD multi spark box?
Iv got the digital box, the plug n play harness and the BIG coil. Ha all three for like a year or more, still going strong.
#13
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: MSD multi spark box?
Not worth the money on a stock car.There quality has gone down over the years.Had one a couple years back,it lasted 6 months.Tried the new digital Crane box. Again that one lasted about 6 months.A part that says made in America only has to have 75% of the parts actually made in America to be considered made in America.That's the law.
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