The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- LSx Swaps (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=206)

- - LS swap with hydroboost question (https://67-72chevytrucks.com/vboard/showthread.php?t=488284)

kwin	10-10-2011 12:04 AM

LS swap with hydroboost question

I recently purchased a 2006 5.3, a 700 r4, and a cable throttle body.So I have to order a flywheel spacer and motor mount plates and i'm ready to get going.
My 1990 CC is equipped with hydroboost and I would love to retain it. The pumps are not the same one has 3 lines (HB) and the 5.3 has 2 , has anyone ever dealt with this before?
Is this do-able?

Thanks
Keith

BR3W CITY

10-10-2011 08:16 PM

Re: LS swap with hydroboost question

the truck engines didn't all come with hydroboost pumps. My 6.0 had the hydroboost pump already on it, which has the correct 3 lines. IIRC they can be swapped out from another modern truck, you'd just have to buy the right pump.

pat565

10-10-2011 10:25 PM

Re: LS swap with hydroboost question

Quote:

Originally Posted by kwin (Post 4944968)

I recently purchased a 2006 5.3, a 700 r4, and a cable throttle body.So I have to order a flywheel spacer and motor mount plates and i'm ready to get going.

Thanks
Keith

Thre are some GM flywheels that don't require spacers. I think that the th400 and the 700r4 are the same. If so, I have a new one here that I won't be using. I ended up using a 4L60E trans

I have an extra set of adapter plates too

usmcchevy

10-10-2011 10:35 PM

Re: LS swap with hydroboost question

You can use a non-HB pump, just T the return lines together.

All times are GMT -4. The time now is 08:29 PM.