Holley Sniper EFI on 401

For everything related to using Fuel Injection in an FSJ.
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KJ Ryu
Posts: 838
Joined: Sun Jun 10, 2012 8:03 am
Location: Casper

Re: Holley Sniper EFI on 401

Postby KJ Ryu » Sat Oct 21, 2017 8:00 am

I didn't take a lot of pics but, here's a link to my postimage folder: https://postimg.org/gallery/172qyktsk/
Ron

2005 KJ, Hit-n-Run, 2am 6-17-2012, Totaled. :mad:
1977 SJ J10, 4v360, T18, D20, 37x14s, SOA & SF on tons, still ugly.
1978 SJ Wagoneer, 4v360, QT, 33x12.5s, lift by Sawzall :-bd NOT Running :(
1977 SJ J10, SniperEFI 401, QT, D44s, 31X10.5s :fsj:
2006 KJ

Mars wrote:One man's trans leak is another's penetrating oil :D

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az chip
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Joined: Tue Jul 14, 2015 8:59 pm
Location: Mesa, AZ

Re: Holley Sniper EFI on 401

Postby az chip » Wed Nov 15, 2017 7:44 pm

Would not let me see pics.
'81 Cherokee Chief 81 WT Chief/MSD 6/ Rusty 4" Spring lift/ Bulltear oil adapter/K&P Engineering Oil Filter/ NP 208/ Serehill Light Harness/ H4 Headlights/ Evil Twin Fab Roof Rack and sliders/ Ross mirror mounts.

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KJ Ryu
Posts: 838
Joined: Sun Jun 10, 2012 8:03 am
Location: Casper

Re: Holley Sniper EFI on 401

Postby KJ Ryu » Fri Nov 17, 2017 7:17 pm

Let me know if this works for you.

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Ron

2005 KJ, Hit-n-Run, 2am 6-17-2012, Totaled. :mad:
1977 SJ J10, 4v360, T18, D20, 37x14s, SOA & SF on tons, still ugly.
1978 SJ Wagoneer, 4v360, QT, 33x12.5s, lift by Sawzall :-bd NOT Running :(
1977 SJ J10, SniperEFI 401, QT, D44s, 31X10.5s :fsj:
2006 KJ

Mars wrote:One man's trans leak is another's penetrating oil :D

User avatar
az chip
Posts: 1390
Joined: Tue Jul 14, 2015 8:59 pm
Location: Mesa, AZ

Re: Holley Sniper EFI on 401

Postby az chip » Fri Nov 24, 2017 8:42 pm

Thanks for doing that. Those I see fine.
'81 Cherokee Chief 81 WT Chief/MSD 6/ Rusty 4" Spring lift/ Bulltear oil adapter/K&P Engineering Oil Filter/ NP 208/ Serehill Light Harness/ H4 Headlights/ Evil Twin Fab Roof Rack and sliders/ Ross mirror mounts.

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az chip
Posts: 1390
Joined: Tue Jul 14, 2015 8:59 pm
Location: Mesa, AZ

Re: Holley Sniper EFI on 401

Postby az chip » Sun Jan 14, 2018 4:59 pm

What did you do with the PCV system?
'81 Cherokee Chief 81 WT Chief/MSD 6/ Rusty 4" Spring lift/ Bulltear oil adapter/K&P Engineering Oil Filter/ NP 208/ Serehill Light Harness/ H4 Headlights/ Evil Twin Fab Roof Rack and sliders/ Ross mirror mounts.

User avatar
KJ Ryu
Posts: 838
Joined: Sun Jun 10, 2012 8:03 am
Location: Casper

Re: Holley Sniper EFI on 401

Postby KJ Ryu » Thu Feb 15, 2018 12:17 am

az chip wrote:What did you do with the PCV system?


Sorry for taking so long to reply. I didn't do anything with it. PO installed the intake manifold and mangled... err, I mean removed the emissions stuff. But, I'll get some pics and what-not asap (this weekend, probably). Not even sure it is correct, tbh.

On a positive side note, there was one good thing about ordering direct from Holley: I get a free t-shirt for writing a review!

Image
Ron

2005 KJ, Hit-n-Run, 2am 6-17-2012, Totaled. :mad:
1977 SJ J10, 4v360, T18, D20, 37x14s, SOA & SF on tons, still ugly.
1978 SJ Wagoneer, 4v360, QT, 33x12.5s, lift by Sawzall :-bd NOT Running :(
1977 SJ J10, SniperEFI 401, QT, D44s, 31X10.5s :fsj:
2006 KJ

Mars wrote:One man's trans leak is another's penetrating oil :D

posulli88
Posts: 11
Joined: Thu Dec 15, 2016 7:49 pm

Re: Holley Sniper EFI on 401

Postby posulli88 » Sat Apr 21, 2018 8:14 am

What did you end up using for your 12v source (hot with ign on and cranking)? Installing mine this weekend and its the only part I am struggling with to find. Thanks!

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KJ Ryu
Posts: 838
Joined: Sun Jun 10, 2012 8:03 am
Location: Casper

Re: Holley Sniper EFI on 401

Postby KJ Ryu » Sun Apr 22, 2018 7:14 am

I used a red wire with a white trace on it. I thought it went to the electric choke but, looking at the diagram on oljeep, it seems to be the coil+. Someday, I may need to rewire the whole thing, so I know for sure.

The PCV valve is plumbed directly to manifold vacuum, at the base of the throttle body. Like I said, probably not right but that's how it was before I got it.
Ron

2005 KJ, Hit-n-Run, 2am 6-17-2012, Totaled. :mad:
1977 SJ J10, 4v360, T18, D20, 37x14s, SOA & SF on tons, still ugly.
1978 SJ Wagoneer, 4v360, QT, 33x12.5s, lift by Sawzall :-bd NOT Running :(
1977 SJ J10, SniperEFI 401, QT, D44s, 31X10.5s :fsj:
2006 KJ

Mars wrote:One man's trans leak is another's penetrating oil :D

FSBOB
Posts: 23
Joined: Fri Jun 23, 2017 6:30 pm
Location: Minnesota

Re: Holley Sniper EFI on 401

Postby FSBOB » Wed Aug 08, 2018 5:18 am

I know I'm a couple months late on this thread but if you're looking to rewire your truck think about contacting Z & M Jeep. He's got new wiring harnesses specifically for 79 J-Trucks. The only thing I found that wouldn't work in my 76 was the washer fluid and wiper wires. In 79 they ran the hot wires to the switch and grounded through the wipers/fluid pump. Previous to 79 it's opposite. A little reverse engineering on that one issue and all of the wiring in my truck is brand new and working great. Did cost somewhere in the range of 1k though.... Just something to think about when you get to that place.
1976 Jeep J20 401, T15, Dana 20, Holley Sniper EFI, Hedman Headers, MSD Ready-to-Run Ignition, 33" Cooper MTP's :fsj:


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