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95 tbi swap into 87 k5.

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xsmokey11499x

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OK so I still have not got my new k5 put together, but with this 95 sbc350 tbi I swapped the 87 throttl body on, so the plugs Will be the same as before.
Some I need to get a counterclockwise spinning fan and clutch.
but my other concern is can I use my old power steering pump if I swap a serpentine pulley on on back of the power steering pump are in a different location but will that still work
 
So, just swap the power steering pulley and I should be good, don't know if it matters but my ax ac compressor is on passenger side and alternator driver side .
And should I go to the junkyard and grab a clutch fan or electric fans?
 
Unless you need to be able to shut the fans off completely (fording) thermal clutch fan is your best bet.

Electric fans are a fun project, with pretty much no benefit over a properly operating/designed mechanical fan. Just make sure you get a thermal clutch, some of the cheap aftermarket stuff doesn't have the bimetal spring on front, thus isn't a thermal clutch fan.

That is my *opinion* however that is based on running electric fans myself, and the fact that so far, I've yet to see a CFM rating of the stock fan, so any comparisons vs electric are anecdotal at best.

Edit: and not to muck up this thread with a tangent, I wonder about the "efficiency" aspect of the electric fans. Clutch fans are said to produce 5HP of parasitic loss to a motor, but not sure if that is freewheeling or locked up. I'd assume locked up. An electric fan requires fuel to be burned, to turn the alternator, to convert the energy to electricity, that the fans can then use...at least 15A constant, I believe 30A is common on some of the good electric fan setups. There is inherent loss in that conversion, where a mechanical fan is utilizing the burned fuel in a more direct manner. Crank rotates, fan turns. All I know is, running electric fans vs mechanical, even in the same truck, I've never seen an MPG difference, and I'm pretty darn good about keeping tabs on it. If an electric fan is more efficient, the TRUCKS are so inefficient that you'll never know it. I CAN say with certainty, that the alternator loading is so great with electric fans (single LS1 fan being turned on) that IAC has to be opened up more in anticipation of the load on the engine, and I consider that significant...as a for instance, the power steering loading is nowhere near that much.
 
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dyeager535 said:
That is my *opinion* however that is based on running electric fans myself, and the fact that so far, I've yet to see a CFM rating of the stock fan, so any comparisons vs electric are anecdotal at best.
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My experience has seen a bunch of people with mechanical fans that have no cooling problems and then introduce problems when they add electric ones.

Advantages to electric fans are efficiency (to some degree, maybe) and they come in a slimmer package. If you wire it in with a switch, you can shut them down for water crossings.

Cons, pretty much guaranteed that they'll move less air than any properly functioning mechanical fan. Less reliable.

I put electric fans (Windstar) in my Blazer a couple years ago because I want the radiator as close to the motor as possible for approach angle clearance. They work well, but that engine compartment is practically open air.

Worth the downsides on my Blazer, but I would generally consider electric fans a downgrade unless you need them for some reason other than cooling.
 
38377k5 said:
My experience has seen a bunch of people with mechanical fans that have no cooling problems and then introduce problems when they add electric ones.

Advantages to electric fans are efficiency (to some degree, maybe) and they come in a slimmer package. If you wire it in with a switch, you can shut them down for water crossings.

Cons, pretty much guaranteed that they'll move less air than any properly functioning mechanical fan. Less reliable.

I put electric fans (Windstar) in my Blazer a couple years ago because I want the radiator as close to the motor as possible for approach angle clearance. They work well, but that engine compartment is practically open air.

Worth the downsides on my Blazer, but I would generally consider electric fans a downgrade unless you need them for some reason other than cooling.
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thanks for the advice I'm going with mechanical fan. now it seems like I have to buy a pigtail adapter ACDelco 8078 for alternator, and people say I can use my old power steering pump just swap. But will the lines on back of pump clear the brackets I have the aluminum brackets
 
y5mgisi said:
ok thats a good reason. Then yes, swap and go.
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yeah my buddy gave me the engine for a good price he told me it would be a direct swap

but I've realized the throttle body I have to change out which is no biggie I have the 87 throttle body and the alternator pigtail and well the power steering pump is missing and the . fan
now I'm starting to wonder if my ECU will work with it
 
What pigtail? If you are wrecking yard hunting anyway, just get one from there. I never could see paying parts store prices for the pigtails, normally more expensive than the part they plug into lol. (not the case for alternators I understand)

You'll also need a resistor for a newer alternator (see the CS130 CS144 swap thread that was just updated) on how to do that, it's way cheaper and probably more effective than buying an adapter harness.
 
dyeager535 said:
What pigtail? If you are wrecking yard hunting anyway, just get one from there. I never could see paying parts store prices for the pigtails, normally more expensive than the part they plug into lol. (not the case for alternators I understand)

You'll also need a resistor for a newer alternator (see the CS130 CS144 swap thread that was just updated) on how to do that, it's way cheaper and probably more effective than buying an adapter harness.
Click to expand...

I went and bought the pic tell from the junkyard but it only has one wire coming off of it and I assume I need the one that has two wires from the s and L connectors
 
Be careful with the adapter. One I bought did not make good contact, luckily I didn't lose anything electrical when the plug lost contact and spiked the alternator output.

In my case, the adapter wasn't designed correctly and one end of the plug didn't go into the socket side far enough. Pretty easy to correct, but since I didn't notice when I put it together, belt squealing from the excessive load was my first clue something was wrong.
 
I did the serpentine swap on my 1988 V10 Suburban. My setup came from a 1992 Camaro RS with an LO5 305. Here is my build thread.

http://coloradok5.com/forums/showthread.php?p=2477927#post2477927

Here are some pictures.

IMG0160A.jpg


IMG0164A.jpg


IMG0165A.jpg


I just (very carefully) bent my AC lines until they fit.

I can get better pictures if you like.

Martin
 
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