1stchevelle

Ok, I'm a newbie to this forum and what I'm working on with my two sons.

I have a 1969 Chevelle and a complete pullout 5.3 engine and trans from a 2003 Tahoe.

Main question: The intake sits up too tall for the hood to close.

I've read where I could go with an LS1 or LS6 intake but it seems there modifications or changes required for each.

Anyone done a similar swap and can point me in a specific direction?

Thanks for your help.

I have a second question but will post it on a different thread.

William

Paul Bell

iTrader: (9)

Welcome to LS1tech!

I'd like to see some pix of this car!

The Tahoe engine has a "truck" intake manifold on it which has a higher throttle body/inlet location than car (LS1/LS6) manifolds.

GM did this to clear a water pump mounted fan. The rest of the accessory components match this. Swapping to the car intake means other things will interfere.

76larkman

do you think you shave the garbage on intake you get it closed. I did on my skylark with hood brace trimming hood clears. my truck altenator was more a problem for clearance. maybe cowl hood would help?

CattleAc

iTrader: (7)

I'm running the same combo in my 72 Chevelle wagon..."Project Greenbrier"...

My truck intake fits under my stock hood...

Paul Bell

iTrader: (9)

Is that a single hose for the upper? How'd you figure out what to use?

LS1 pwrd NOVA

iTrader: (2)

It should fit, maybe your engine is mounted in wrong so it's sitting high

CattleAc

iTrader: (7)

It's a stock upper hose for a 99-05 GM truck/suv...


This was in mock up...










Not meaning to hi-jack your thread 1stchevelle...lets see some pics of yours.

Tell us what you used for plates and mounts...maybe we can give you some suggestions...

1stchevelle

Thanks for all you guy's help.

I purchased an aftermarket oil pan so that the reservoir would not hang below the cross member however, because of the thickness of the front portion of the new low profile oil pan, the motor would rest on the cross member before it would align with the motor mounts so we had to extend the motor mounts. Maybe the problem is the new oil pan and that is pushing the motor up to far.

Any suggestions on the proper oil pan or would you just use the stock oil pan and let it hang down below the cross member a few inches?

I'll add some pics as soon as I get home - in the great state of Missouri on a sales call for my company.

William

LS1 pwrd NOVA

iTrader: (2)

Fbody you notch the x member and box it in.
CTSV may barely hang.
Holly pan will work but is pricey when you get everything for it to work.

What oil pan did you buy? Pics?

CattleAc

iTrader: (7)

This...I used an F-body pan on mine...I didn't notch the crossmember, I dropped my engine down and back as far as I could. It's pretty tight...If I did another one, I would notch the crossmember.




Yeah...lets see how yours is setup...