johnny Boost

Sorry if this is an odd ball question but can the accessories front plate/bracket off the LS4 5.3 work on a truck 5.3 (LM7 to be precise)?

I like how narrow the pulleys and such are on the LS4 and thought that give me some added room in my swap into my RX7.

I'm also concerned with the accesories themselves like the water pump and such as to the fact I do not know if they are interchangeable.

Haulin_Ls4_GxP

iTrader: (1)

Crank snout is to long wont work sry

fieroguru

iTrader: (1)

The crank snout is 10mm longer on the RWD applications, but you could cut the snout to make it shorter.

I was just comparing/test fitting a RWD pump on my LS4 so I have some good pictures of the relative placement of the belt drive vs. the RWD setup. The pump in these pictures is sticking out about 1/4 to 3/8" from the block due to the LS4 cam sensor bracket boss, so subtract that amount from all the measurements shown in the pictures.





LS4 balancer:


While the LS4 water pump is shorter in overall length, the offset water pump housing and the bottom exiting thermostat housing reduces room to mount the accessories off to the side.


It was also designed to have the intake facing the rear of the block, and the power steering tank bracket is in the way of the throttle body, and depending on intake manifold, you might have clearance issues with the coolant passages of the water pump.

Panther427

Great pictures

vroom_vroom

iTrader: (5)

is that a 5spd i see on that ls4.................

johnny Boost

That's a huge help thanks for the pictures!

fieroguru

iTrader: (1)

Nope, its a 2006 G6 F40 6 speed! Never been a fan of the 4T65E-HD.

thomascreation

iTrader: (13)

Fieroguru, nice pictures. Any chance you could put up a measurement of the water pumps width? On v8s2000 were working on water pump options for the lsx s2000 swap and we found that the harmonic balancer will work but were not sure of the water pump as far as if it would hit the drivers side frame. If you could, thanks!

fieroguru

iTrader: (1)

Sorry for the delay... been out of town for several days and away from my parts.

My LS4 water pump is highly modified (reworked all the coolant inlets/outlets/thermostat housing), but I can tell you that the outer edge of the water pump is about 11" from the top water pump bolt on the driver side of the block.



Here is a stock LS4 pump from the other side:


Stock LS4 accessory drive:


My version with the modified water pump, PS pump delete, AC compressor lowered and Alternator placed alongside the A/C and water pump.

thomascreation

iTrader: (13)

Thanks! i really appreciate the dimensions. I need to check again but I think the pump should work for my set up. If you want check out the build. http://www.v8s2000.com/forums/showth...Ls1-6spd-S2000

fieroguru

iTrader: (1)

Cool build and a very tight engine bay!

You might want to consider removing the stainless tubes for the hose ends on the pump and tapping them for some 90 degree fittings to get more clearance to the steering gear box.

thomascreation

iTrader: (13)

Great idea. I was thinking I would weld a new tube but that might be a better option.

thomascreation

iTrader: (13)

Do you think there would be enough room to section the pump 1/2"? I worried about the clearance between the back of the pump and the block.

BenDiesel

hey a quick question I'm looking at modifying an LS4 accessory drive for my l33 I found an LS4 accessory drive but the tensioner was broken in the accident tensioners $170 I can get the whole engine for $180 I noticed you don't use the stock tensioner do you just move the alternator or something? I'm putting the oil pan, on found in another forum that it is a direct swap just need the windage tray and pickup tube is well.

fieroguru

iTrader: (1)

You can pick up used tensioners for under $75 normally (here is one for 70, but it has a chipped pulley) http://www.ebay.com/itm/Belt-Tension...1X~uX5&vxp=mtr

You can also get a new AC Delco tensioner for $135 from Amazon and it is eligible for prime.

When I did the swap above, I deleted the stock LS4 tensioner and replaced it with a more conventional tensioner from a camaro. It is the very top pulley above the water pump, but it won't work on a stock LS4 water pump housing without machining the housing for it.