• To ALL forum users - As of late I have been getting quite a few private messages with questions about build ups here on the forum, or tech questions about your personal project. While I appreciate the interest, sending me a private message about these topics distracts from, and undermines the purpose of having a forum here. During the day I wear many hats as a small business owner-operator and I work tirelessly to provide the absolute best service possible to you, our valued customer. When I created this forum I rounded up some of the best minds I knew so that any tech question you might have could be asked and answered by either myself or one of my highly experienced moderators, this way the next time this same question is asked the answer can be easily found and utilized by the next IH enthusiast having the same question. This allows me the freedom to run the day to day operations of the business and minimize the impact to shipments and shop activities that these distractions can cause. It is of the up most importance for me to complete the daily tasks in order to best take care of you our customer, all the while providing you a forum to get the level advice and input you have come to expect and deserve from the premier IH shop in the country.

    So with that I ask that anyone with a question about one of our build ups or a general tech question to please use the forum as it was intended. I am absolutely available by telephone to answer your questions as well but at times may direct you back to our website to better field your question or questions. Most other private messages I will be glad to answer for you.

    Thank you for your understanding.

    Jeff Ismail

Scout II 4-cyl EFI installations

it's finally time to start the dialogue. Know of any pics of an install of your kit on a Scout II w/196? I'm at a point where I need to do a serious reassessment of where I am with my project, and it revolves around your efi kit. I wish I had taken pics of John Glancy's rig at the gv show (that was a 4.3 TBI, right?). Couple of questions as I kick around some options...stock 4.3 TBI air cleaner - does that fit under the hood with your setup? What are other air cleaner options? This would be if I go n/a to get everything sorted out before returning to a turbo. I want to keep a crank fire system, so what parts are used for that...I know I need to get a new crank wheel made.

Bill USN-1

F.I. Moderator
I have some pics of john's some where?
I'll have to look. It doesn't look any different then a carb and stock distributor.
The 4.3-5.7 throttle body are all the same. Only injector flow is different.
4.3 injectors for the 196

air cleaner base is standard 5 1/8 hole.
For johns I just swapped the 1bbl base for the IH 4bbl base.

For the dis, you can look at my 4cyl mini write up on bp.
I used the GM wasted spark dis from a 2.2 or 2.5 iirc.
The 2 coils just set on the ignition module and bolts to the engine.
Crank trigger plugs right in just like the distr pickup would.
Does the air cleaner used on the 79-80 Scouts with the Thermoquad have this 5 1/8" opening, you know, will it fit this TB?


Active member
Mark I think one from a D series pickup would be what you want. You'll get the right sized hole and depending on the year you won't have all the smog stuff if not needed. It'll also be a lot easier to find.

While The D series air cleaners are very similar to the Scout ones (v8 anyway) they are taller. I'm running one on the Scout's Holley 4BBL and had to cut the neck down 3/4"s of an inch to clear the hood. I don't know if this is an issue in your application.
I know the D's are taller (learned that the hard way once). So the Holley 4bbl and 2300 series 2bbl (same air horn size as the 4bbl) isn't the same as the TQ? If so I'd forgo a D so I don't have to modify anything.


The Carter ThermoQuad uses the 5 1/8" diameter base opening air cleaner assembly.

Same as the Holley 4-barrel carbs and the GM QuadraJet.

Also the Holley 2300 Series 2 barrel carbs.

All are 5 1/8" diameter base opening.


New member
With a Holley 1940 removed and the Hamilton FI plate installed and the GM TBI you are too low for an IH 5 1/8" air cleaner to be swapped over. You'll need a 3/4 inch spacer on top of the TBI to clear the water neck. The inlet for the spark arrestor also points to the driver's side when it needs to point to the passenger side. I went through the entire process of getting the IH 5 1/8" air cleaner, repainted it, flipped the spark arrester inlet to the correct direction, got the spacer, installed it......and didn't like it. I went with a Trans-Dapt 8641 raised 10" air cleaner assembly.