Serpentine setups..info please

[pcmcobra]

Question...
I bought the tpi setup, only no smog pump delete pulley.
Instead of buying the pulley...what belt can I use? Any one have a part # for the slightly shorter belt?
thx

[piecesparts]

Originally Posted by pcmcobra

Question...
I bought the tpi setup, only no smog pump delete pulley.
Instead of buying the pulley...what belt can I use? Any one have a part # for the slightly shorter belt?
thx

When I purchased my brackets, I got a belt from S&P for the setup W/O the air pump and idler pulley. I have yet to try it, but the number is GOODYEAR 4060960 6PK2440.

[sneezys72]

What needs to be done to the rest of the ac setup. I got the serpentine brackets with the new Delphi compressor and will be putting it in soon. I will also be adding the ac as my truck doesn't have it yet. I have a stock ac setup minus the compressor and brackets. Can I still use this, or do I need the condensor, dryer, etc out of the new model? Also how deep do you need to drill into the head (not mine, the one on my truck)? I just want to be sure of these answers before I start because it is my daily driver.

[pcmcobra]

good questions sneezy,
I was going to ask about the depth/size of hole in the head....Mine is on the back burner for a few weeks at least.

[piecesparts]

We drilled one of my heads for the brackets and went in about 7/16 of an inch.

[Zoomad75]

Originally Posted by pcmcobra

good questions sneezy,
I was going to ask about the depth/size of hole in the head....Mine is on the back burner for a few weeks at least.

Here's the best way to gauge the depth. Go to an existing hole and run a bolt in until it just bottoms out. Mark the bolt where it's flush with the head. Remove the bolt and measure from the end to the mark you made. to be safe I'd take a 1/16th of an inch off as a saftey margin, not to go too deep. Transfer that measurement to your drill bit with a piece of tape and drill to the tape.

[pcmcobra]

zoomad,
good answer, wished I would have thought of it...
thx
John

[Zoomad75]

No problem, just be carful not to drill too deep! Plus you got to keep the drill perpendicular to the head in two directions to make sure the hole is straight. I know DirtyLarry said he was pretty spooked about taking a drill to a cylinder head when he did it. take your time, use a sharp bit and plenty of cutting oil. Clean the hole out often and let the bit do the work. This isn't like drilling into a 2x4. Drilling cast iron takes time. Oh and be sure to center punch the head first before you start drilling. Otherwise your bit is going to walk all over the front of the head and you wont be able to start the hole in the right spot.

[MylilBowTie]

I smell a sticky or tech artical. Tons of good helpful info

[Palf70Step]

Here is mine. It came off a 94 C1500 with a 4.3

I didn't bother to drill the head to mount, you really don't need it it bolts solidly without the extra hassle.

In the second picture you can see where i didn't add the second bolt on the upper/inner side. You can see the brace from the tensioner to the drivers side of the head and it and the other braces make it plenty strong for normal use. There is several folks that run them that way and no problem if you don't want to go through the hassle of drilling and tapping the head.

[jdmaffeo]

Originally Posted by pcmcobra

Question...
I bought the tpi setup, only no smog pump delete pulley.
Instead of buying the pulley...what belt can I use? Any one have a part # for the slightly shorter belt?
thx

Here is the Gates belt and part number that you are looking for. I am not running the smog pump. I hope this helps.

[pcmcobra]

so now that I have 95% of what I need, i can get started, just missing 2 bolts for smog pump pulley.
As for all of this other emissions crapola...I am now having second thoughts about this. I don't want to put a new carb or intake on this motor, don't want to put another dime in it really. But there is some equipment attached to some of these stock brackets I am not familiar with and just don't want to get knee deep, and have one of those "uh-oh" moments.
I'm gonna post some pics and maybe you guys can tell me what I can yank off and not worry about. no smog tests here so I don't care about the emissions stuff.

[pcmcobra]

Here goes, what I want to know is, can I get rid of this stuff that is hindering me from converting to a serpentine setup, without having to buy any new equipment, like carb/intake...
If so, can you explain what I need to do with the lines that are connected to the devices in the pics?
The last pic is a wire, and I just don't know what it is connected to, or what it does.
thx all.

[piecesparts]

First of all, do you have smog tests in your state? If so the smoggies will make you put the stuff back on. All of the tubes in your pictures are for air injection to your exhaust system and it is required in most states. Many trucks did not have smog stuff on it, however, my 84 and my son's 85 did and now that stuff is in the trash, but I live in Kansas and we do not have smog checks. If you are free of the rules, then YES it can be removed and the holes plugged with either plugs from an automotive outlet or homemade plugs. The wire that you want to remove is not going to give you any issue and if nothing else just move it and the connector out of the way. Take the smog pump and do the ALLY-oop to the storage ppile in the back of the garage.

Look for a basic motor plan, here. Gas and air in, and exhaust out (without the cats I imagine). The dizzy and carb may have to be changed for something that is not computer dependent for operation. I put a standard HEI into my truck and then did an upgrade to an aluminum intake to get rid of the computer carb. YOu could change over to a different carb selection without changing the intake.

I have a 383 stroker motor in my truck and my son's truck has a standard 350 without the smog, and cats affecting them. Short of giving off emission gases that are not inline with California's standards (who cares about
california), we have good running vehicles.

[pcmcobra]

in the post before the pics, I did mention no smog test. In Florida, they did away with that years ago. So I am good there.
thx for the input.

[Jonboy]

The first pics are your AIR injection pipes into the exhaust manifolds. The rest of the pics are the one way check valves to keep from putting exhaust into the smog pump. If you are getting rid of the smog pump, you can pull that off. It will not set a check engine light. You can unplug the electrical connection to the switch on the check valves and just folt it cack into the harness to get it out of the way. The last picture is your brake pressure switch (I think). If not that, it goes to a high pressure switch for the Power steering. Either way, leave that one.

[jdmaffeo]

Yes the last picture is the brake pressure switch....Leave that one, but the rest can go if you don't have emmisions testing.

[Pyrotechnic]

Bringing this one back from the dead. This thread has lots of great info.

With the stock R12 A/C dying in my 77, I'm getting very serious about swapping to the 96-04 serpentine setup and delphi compressor mention earlier in this thread. My main motivation for moving to this setup is hopes of: Easy valve cover access with the ability to run tall valve covers and remove them easily and of course the improved efficiency of the delphi compressor.


Does the A/C compressor or alternator interfere with the valve covers at all ? I want to be able to run tall valve covers and have easy access to them if I need to adjust the rockers.

[pcmcobra]

Im still having a tough time w/ the ac. I bought some 92 firebird ac hoses, but not working/fitting right with my drier, and also a little long to condenser, kinking the hose. Local ac shops want $200 just to make lines using my existing lines.
Any ideas?
thx

[gchemist]

The serpentine belt system leaves plenty of room to remove the valve covers. Eventually I'll change mine to chrome.

[ElGracho]

Why not buy hoses for a 91 Blazer with a 350? They had serpentines...

[pcmcobra]

Originally Posted by ElGracho

Why not buy hoses for a 91 Blazer with a 350? They had serpentines...

well, I did.
Went to oreilly's and that's what I asked for, but what I got would not fit. Maybe I will try a different place. Maybe they got me the wrong ones?
thx

[Pyrotechnic]

Maybe they were thinking S10 Blazer ? Tell them 91 V10 Blazer, or even 91 R10 Suburban. The R10 Suburban was the only Surburban that year, maybe thats a little more fool proof for parts counter workers ?

[liljon285]

I guess im unique cuz i have not seen one truck with the one i got!

[piecesparts]

My local NAPA makes up hoses and I know that the cost will be up a little, but it is not around $200.00. Of course this depends on how much hose and how long you want them.