Conversions & Hybrids - why does everyone switch to the car water pump?

Im just curious but it seems that 98% of the time people will buy a truck longblock but swap the waterpump to the car model?

can I ask why?

also, if I use the truck accessory drive is it possible to mount the alternator down low like on the cars?

finally

I want to run only the alternator and waterpump off the belt. what do I need to change?

most people do it for the clearance issues that arrise when you use the truck water pump which comes out at the top. I for one had to use a car water pump due to the upper radiator hose hitting my hood.

most people swap out to ls1 intakes , so the neck on the truck wp innerfers with the throttle body and the throttle body interfers with the pulley on the truck bracket. so they buy the car waterpump. ls1 alternator bracket lets u mount it down low like u want with a custom back bracket or drill the block. or u can buy the ls1 c5bracket and mount the alternator up and out to the side.
FIRST PIC IS A 4.8,5.3 OR 6.0 SWAP
http://i26.photobucket.com/albums/c150/vandejr/UpdateS10CompressoronLSEngine.jpg
F-BODY LS1 ENGINE
http://i26.photobucket.com/albums/c150/vandejr/LS1b.jpg
LS1 C5 ENGINE
http://i26.photobucket.com/albums/c150/vandejr/SPACBracket.jpg

notice the neck on the wp's on the ls engine and the ls1 body wp's. also the powersteering and alternator locations are nothing alike as well as brackets. hope this helps.

Ok, would the car crank pulley work on the truck water pump or vise verse?

thank you all for the reply. special thanks to vandejr.

so, I would love this alt setup setup but since Im planning to use a victor intake, I have some questions
http://i26.photobucket.com/albums/c150/vandejr/LS1b.jpg

what would I have to change to run that bracket? can I still run the stock truck water pump and pulley or does all that have to be changed as well?

also, since I'll only be running the alternator, are there any special requirements around that?

Ok, would the car crank pulley work on the truck water pump or vise verse?

i asked the same thing but i noticed that the truck pulley sticks out a lot more then what i would need for the ls1 water pump. i have the ls1 water pump on my lqx now and the crank pulley stick out SO MUCH so i got an f body crank pulley and its a lot shorter. so i would have to say no you can't

i asked the same thing but i noticed that the truck pulley sticks out a lot more then what i would need for the ls1 water pump. i have the ls1 water pump on my lqx now and the crank pulley stick out SO MUCH so i got an f body crank pulley and its a lot shorter. so i would have to say no you can't

Ok thanks for the heads up I thought they were different but didn't know how much. Hum now do I get a under drive for the wifes car and take her pulley or put the under drive on the 6L.......

now that you said that what tool did you use to switch out the pulley? i am new to ls1 i have the one for the SBC but i can see it doesn't use that..lol

You need a large 3 jaw puller to pull it (autozone has one as a loan a tool)

You will need a metric bolt, rod, or LS1 specific puller to pull it back on. I forget the thread size, but a search should turn it up. Also check out the tools section for pics of the installers.

http://i26.photobucket.com/albums/c150/vandejr/UpdateS10CompressoronLSEngine.jpg

What bracket is required to mount the AC like that and what length belt?

What bracket is required to mount the AC like that and what length belt?

stock 5.3 silverado/tahoe/hummer h2 bracket(s) and belt

Thats definetly not a stock 99-07 silverado or hummer bracket, or ac compressor for that matter. Maybe it was in a van or something? ive never seen that setup in my life, on any year truck! somebody help me out here....

There was a thread recently about using modded small block brackets for a swap. The alt/power steering look like stockers, but the a/c is defiantly early 90's with the comp and tensioner. Nice set-up actually.

I would say if you want to mount your alternator down low and still use the truck parts, build your own alternator bracket. Probably the cheapest route.

this guy is using all the stock truck accessories and he is running in the 8s.
I love how he cut down the ugly alternator/power steering bracket and made it look presentable.

this is exactly what Im gonna do. run all the truck parts and keep things simple

http://i10.photobucket.com/albums/a142/tirefryin_s10/Stang011.jpg

http://www.theturboforums.com/smf/index.php?topic=80049.0

this guy is using all the stock truck accessories and he is running in the 8s.
I love how he cut down the ugly alternator/power steering bracket and made it look presentable.

this is exactly what Im gonna do. run all the truck parts and keep things simple

http://i10.photobucket.com/albums/a142/tirefryin_s10/Stang011.jpg

http://www.theturboforums.com/smf/index.php?topic=80049.0

thats nice, but i got something better, way better, and and more compact and practical. at least i like to think so. :secret2:
if ur gonna use a manual steering gear box and wont be needing ps, or e
if u are using ps too. i got it covered. ;)
coming soon!

thats nice, but i got something better, way better, and and more compact and practical. at least i like to think so. :secret2:
if ur gonna use a manual steering gear box and wont be needing ps, or e
if u are using ps too. i got it covered. ;)
coming soon!

cant wait to see it. it probably wont be out in time for my build but I like choices. I like the free one that he cut down and painted. doesnt get simpler or cheaper or easier.

I swapped to an f-body water pump because my truck motor went into an f-body :)

cant wait to see it. it probably wont be out in time for my build but I like choices. I like the free one that he cut down and painted. doesnt get simpler or cheaper or easier.

they alredy exist, on my car now, just going thru final phases of testing.
before i send em out. cnc machined. lighter. i could go on.
ive done the ls swap about 6 times now into different cars. the parts i developed for swaps have taken into account and eliminated. most if not all the usual annoyances related with accesories swaps, especially in older cars that used to be sbc.:cool:

That twin turbo Mustang setup with the 6.0 motor is great! He is running mid 9's thus far though. With a built motor and those turbos at full tilt that will be an easy 8 second car.

It is all about fine tuning the combo. His new convertor should help a ton. Then he just has to work about the basically stock shortblock holding up! Those pistons and rods are getting close to their limits.