Ruffturbo911

Can somebody please tell me the correct part number for the knock sensor that goes in a 2001 Pontiac Trans Am LS1?
I am getting two different part numbers between AutoZone Amazon and Summit Racing. Is it 12589867 or 213-3521?

67Lark

Those are the same part. The 213-3521 is the ACD number and the 12589867 is the GM number.

Ruffturbo911

Thanks. Now debating on whether to use FelPro or GM gaskets.

SlasherVRGR

iTrader: (1)

For the intake? I used felpros and they work just the same I'd imagine.

67Lark

felpro gm or mahle should all work just fine

98CayenneT/A

Fel-Pro works perfect for the intake manifold.

Ruffturbo911

Thanks all. I ordered all the parts and a buddy with an LS3 said he'd help out if I needed help. I think it will work out well and at most I'll just need to buy a torque wrench. Doing all GM parts with FelPro intake gaskets. Hopefully this solves my PO332!

usnfenix

iTrader: (11)

replace the harness while you are in there, its only 40 bucks and prob could stand to use it

Ruffturbo911

I ordered that too.

Paul Bell

iTrader: (9)

While you're in there, you are doing this much needed mod, right?? http://ls1howto.com/index.php?article=18

Ruffturbo911

No I wasn't going to. Can you just get a modded LS or new LS 6 valley cover without messing with the engine?

Paul Bell

iTrader: (9)

No, the LS1 block will need this modification.

HOWEVER, your car may have come with the LS6 block which won't need the mod.

Ruffturbo911

My PCV leads out of the rear of the drivers side valve cover so I think it's an LS1.

Paul Bell

iTrader: (9)

This is correct for an F-body, even if it was one of the vehicles that received the LS6 block. The LS1 AND LS6 blocks used in Camaro/Firebird production will always use the Camaro/Firebird LS1 style PCV system.

Regardless, the LS6 PCV mod is a smart upgrade and worth the effort and small cost. If you have a LS1 block, cut out the nub in the block, it's easy. If you have a LS6 block, no cutting needed.

Ruffturbo911

Ok I got you. I thought the 6 block had the vented valley cover. I couldn't see anything with a mirror looking for the 6 block number.

Paul Bell

iTrader: (9)

I'm not sure if you've started this project yet but once you pull the valley cover, you'll know. With the estimate of 10~15% of F-bodies getting the LS6 block in 2001, it's unlikely that you have one but there's a chance.

If it were me doing the job, assume it'll need cutting and hope it won't, just to eliminate the one step in the work.

Ruffturbo911

That's a good idea. I'll look for the cutting wheels and ready the shop vac! Too bad the engine is still in the car, otherwise I'd be tempted to do a cam and heads. Not sure if it would pass emission then

Ruffturbo911

Everything works great and valley mod worked out well too. Thanks