Jacobs ignition installed
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Supreme Member
Joined: Nov 1999
Posts: 2,860
Likes: 3
From: NE
Car: 82 camaro SC
Engine: 350
Transmission: 700r4
Jacobs ignition installed
Well, the Jacobs ignition is installed. Along with a Jacobs cap, wires, and AC plugs.
Before I started it was running OK. First we put in on the Snap-on 'machine' and the ignition was working good.
Installed the plugs first, and drove it. No change. Opened up the gap a little bit and it idled rough. Opened up the gap to 60 and installed the Jacobs stuff. The first thing I notice is how quick it starts. It idles smoother, can hardly tell it has much of a cam. Throttle response is improved greatly. The 4500-5000 rpm wall seems to be gone. It will rev to 6000rpm+ without a problem. It seems to run stronger as well. I'm impressed.
With a stock engine, the stock HEI is probably plenty good. However, if you have done some engine mods, an aftermarket system might be a good idea. FYI, I got the system for 40 bucks used--800 miles on the system and totaled the truck.
Before I started it was running OK. First we put in on the Snap-on 'machine' and the ignition was working good.
Installed the plugs first, and drove it. No change. Opened up the gap a little bit and it idled rough. Opened up the gap to 60 and installed the Jacobs stuff. The first thing I notice is how quick it starts. It idles smoother, can hardly tell it has much of a cam. Throttle response is improved greatly. The 4500-5000 rpm wall seems to be gone. It will rev to 6000rpm+ without a problem. It seems to run stronger as well. I'm impressed.
With a stock engine, the stock HEI is probably plenty good. However, if you have done some engine mods, an aftermarket system might be a good idea. FYI, I got the system for 40 bucks used--800 miles on the system and totaled the truck.
Supreme Member
Joined: Jul 2001
Posts: 2,398
Likes: 1
From: Baton Rouge ,Louisiana ,USA
I've been wondering about there ignition stuff . If its as good as it claims in the magazine ads . Of course my car would prabably not benefit much on it . But I've been curious about the real benefts for a V8er ...Glad to hear your satisfied .
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Which system is it? I got the Omnipac in the '97-timeframe, thought it helped a little but couldn't point to any particular quantitative performance improvement. I was using a converted points distributor for the trigger.
I took it off the '57 last year in favor of the HEI/Crane HI-6. I was trying to solve an intermittent high RPM cut-out problem. I think I've found it now - valve springs.
I took it off the '57 last year in favor of the HEI/Crane HI-6. I was trying to solve an intermittent high RPM cut-out problem. I think I've found it now - valve springs.
Thread Starter
Supreme Member
Joined: Nov 1999
Posts: 2,860
Likes: 3
From: NE
Car: 82 camaro SC
Engine: 350
Transmission: 700r4
"suppposed" be a little better than the omni-pac. It's the Omni-Magnum. I forgot to add the mileage increase. So far, with 150 miles on it I can see the mileage increase is going to be substantial. If I can get it up over 20mpg, I'd be happy since my daily driver(91 jimmy) gets around 22.
Supreme Member
Joined: Dec 2001
Posts: 1,158
Likes: 0
From: Greenville S.C.
Car: 87 Grand National
Engine: 3.8 SFI Turbo
Transmission: BRF 200R4
I've heard alot of good things about the Crane HI-6. Anyone else have this or heard of it?? I know its digital instead of the outdated solid state analog technology, but as far as quality and how it compares to jacobs, MSD, Mallory and the like?
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