1996 Yukon with whipple supercharger

[Yagermj]

Hello everyone, first post on the forum. I did a search and found the answer to one of my questions. I just picked up the truck and wanted to do a tune up. I went to pull the spark plugs and noticed that they were the originals(part number wise) after some looking around on the forum I found that they were wrong(what I was thinking) for the truck. So what I have now is and please correct me if I'm wrong. The spark plugs should be one heat level lower then stock, I'm gonna pick up some ac delco cr42ts. The. Other question is in regards to the gap. After poking around on the web I have found a few sites recommend a gap between .032 and .035 would this be correct. The truck currently has the supercharger ( no intercooler) is cat less and has a low restriction exhaust plus a cold air intake( I'm gonna assume it was part of the supercharger kit)

 

[Gzes]

Welcome dude I don't know whatsize it is but lemmi try n get sc to come on here n help

 

[SunlitComet]

I don't know exact number number of a colder ac delco but in autollite 105 is one step colder than the 605 which is number equivelant to a stock acdelco 41-993 and is an excellent replacement. I believe whipple wanted a 0.035 new gap compared to the stock 0.060 but call them tomorrow to be be sure. If you use plain copper core for autolite the part number is just the number. For the propper platinum it would be APP105 for a colder comparable platinum. Whiple will steer you in right direction. (559) 442-1261

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BTW we want pics of setup ASAP.

 

[Yagermj]

Thank you for your help guys, I'm at work now but I'll try to get some pictures up. It's all black with a caddy clip and all body panels plus rear bumper,3 inch body lift , 33's on 16 inch black mt rims.

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Plus the headers and exhaust lol

 

[99Yuk]

...The spark plugs should be one heat level lower then stock, I'm gonna pick up some ac delco cr42ts. The. Other question is in regards to the gap. After poking around on the web I have found a few sites recommend a gap between .032 and .035 would this be correct....

Welcome. I too would like to see pics!

I've recently tried the R42TS plugs and they didn't work too well. It was pointed out to me that they are too short (pics HERE). It was also pointed out to me that I needed;

Originally Posted by steamroller
R= resistor
43= heat range
L= long
TS= tapered seat
6= gap (.060)

14mm thread, .708 reach, 5/8 hex for BOTH plugs. Exactly the same as the 41-993 (imagine that )

The R42LTS6 fit IF you want a colder heat range plug in a copper core.

I've got some now, but havn't put them in yet...
Who knew that one missing letter 'L' could cause such a fuss?

 

[Yagermj]

fail on my part. the pictures are in photobucket (yagermj2603)

 

[SunlitComet]

 

[Yagermj]

so help me out what am i doing wrong posting pictures. I uploaded a bunch into a album feel free to help me out posting them lol

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shes dirty but here she is

 

[Trippers99hoe]

Nice truck

 

[99Yuk]

That is a nice looking truck. Obviously a lot of TLC went into that rig.

Only thing I might change is the color of that push bar, it sticks out like a sore thumb. Kinda looks abit like a beaver tooth. Might look better painted black? Just my $0.02.

However, you can't argue with forced air. That's king of the road stuff right thar.
I'm so green right now.....

I'll bet you can't wait to start modding that!
I'd do efans, UD pulleys and a BBtune asap!