Piston Slap noise reduced greatly

**Hot head** · 12-02-2010, 01:31 PM

Not to be a noob or anything. I recently had the P420 error showing up. The right cat was so clogged that when you were to tap it black powder would come out, for some reason my catalytic convetor turned into a gunpowder factory.

Anyways, it had gotten so bad 4 out of 8 my pistons were missing, like they wouldnt fire but thats was ludacris because all the electronical systems and fuel systems were running perfect.
So I have just gotten my cat replaced and guess what my engine became much Quieter. I can hardly hear that Obnoxious piston slap noise.

Just an FYI sorry if it was already posted.

I have 120,000 miles on my LS1.

**Tampa Tuning** · 12-02-2010, 01:58 PM

20000 miles ago. I put on headers and a louder exhaust and that got rid of the piston slap noise. I havent looked back

**Hot head** · 12-02-2010, 02:00 PM

Originally Posted by Tampa Tuning

20000 miles ago. I put on headers and a louder exhaust and that got rid of the piston slap noise. I havent looked back

I would put some LT's on it but the clearence I hear is not to good at all. And this is a daily driver so winter would be something out of a comedy.

**JRENIGAR** · 12-02-2010, 02:14 PM

Clearance is fine, trust me and everyone else here with headers. I have had mine on for 50,000 or so and havent hit one thing with them.

**Hot head** · 12-02-2010, 02:54 PM

How many inches from the ground? Also, I would have to get a retune how much RWP would I get?

**SLP00blueSS** · 12-08-2010, 03:02 PM

I have LT headers in michigan..only place the rub are on speed bumps that the car would normaly hit on. You will see a improvement in RWHP but the sound you are going to gain is AMAZING! I would recomend LT to anyone....granted mine is a summer car but it still gets driven.....

**Hot head** · 12-08-2010, 04:23 PM

Yea I am on a race team (we race super late stock) They exausts sounds evil like thier is a demon in the engine. They are cammed extemely high also, (850 hp) out of a 350 block.

Headers do make a big difference in sound but in winter time and everyday use I would tend to think the headers will crack in 10 years.

**Hot head** · 12-08-2010, 04:26 PM

Originally Posted by JRENIGAR

Clearance is fine, trust me and everyone else here with headers. I have had mine on for 50,000 or so and havent hit one thing with them.

You must not live in Michigans where pot holes are really bad. The road really

your suspension, exaust if it is to low and your tires. Atleast we dont have any toll roads though.

**KING Z28 HAWK** · 12-08-2010, 06:12 PM

Glad to hear about you getting everything taken care of. But as far as LT's I think you can run them without anyproblems they tuck up pretty good. Here are a few pics that I have where you can see that I still have great clearence...

Hope this helps you out

**Hot head** · 12-12-2010, 10:31 AM

Originally Posted by KING Z28 HAWK

Glad to hear about you getting everything taken care of. But as far as LT's I think you can run them without anyproblems they tuck up pretty good. Here are a few pics that I have where you can see that I still have great clearence...

Hope this helps you out

Who is the maker of your headers? Did you have to retune the engine? Are you using catalytic converters what kind? If not what did you do to by pass it?

**sjgreen6** · 12-12-2010, 11:25 AM

Regardless of weather you decide to install the LTs I strongly recommend you get with Frost for a retune. $125 well spent.

**KING Z28 HAWK** · 12-13-2010, 12:39 AM

Originally Posted by Hot head

Who is the maker of your headers? Did you have to retune the engine? Are you using catalytic converters what kind? If not what did you do to by pass it?

ebaY stainless steel headers tsp ory so no cats. Haven't had it tuned yet car should be getting the cam and stall this winter sometime so tune will come then.

**Too Fast** · 12-13-2010, 02:16 AM

Originally Posted by Hot head

How many inches from the ground? Also, I would have to get a retune how much RWP would I get?

My car GAINED ground clearance, I can fit a Coke can upright with 1/4" to spare, under the lowest part of the header. They ORY, I can't quite get the can under it, but I still have stock 4WD suspension. Hooker ceramic LT/3'' ORY.

A tune is recommended for any car, not just bc of headers, if you can live with the SES light on. Mail-order tune will free up another 10 or so HP, along with the 15-25 from the LT/ORY. Just stay away from SLP headers, these have very poor ground clearance.