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Dec 28, 2004 | 06:15 PM

JackDidley

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From: Database Error Indiana

Another header question

Where is the biggest restriction in the L98 exhaust? The stock shorties? The precats? The main cat? Mufflers? I have stock shorties, no cats, Flowmasters, how much will I gain going to longtubes?? Being snowed in is making me crazy so I came up with this.

Dec 28, 2004 | 07:08 PM

Corvette Kid

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From: Good health is merely the slowest possible rate at which one can die

St. Jude Donor '04-'05-'06-'07

The long tubes should give you a kick you can feel. If I were you with an L98, I'd pick up a stock LT1 system (real duals) as are sold cheaply or given away here on the forum frequently, throw your mufflers on it and I'll bet you'd pick up a good 20 or so along with the headers.

Dec 28, 2004 | 11:53 PM

kwik_ta

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From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...

All of what you listed is a performance hindering part on the L98. LT headers are almost a must, but you'd do well with a set of 1 5\8th primaries and aftermarket cats. The L98 is a torque monster and needs some back pressure... plus that you won't be killing our fresh air.

Dec 29, 2004 | 10:07 AM

JackDidley

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From: Database Error Indiana

Thanks for the input. We don't have smog checks here but someday it will happen. I saw a liink on another thread(N C Kid confession thread

) to Pypes, a co. that makes converters for a fair price. I may get them if its in the budget. I havent gotten a 40 hour week in months and its not helping.

Dec 29, 2004 | 08:22 PM

mikey whipreck

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Quote:

Originally Posted by Corvette Kid NC

If I were you with an L98, I'd pick up a stock LT1 system (real duals) .

The biggest restriction on an L98 system is the fact that it's a single freaking exhaust pipe...

Dec 29, 2004 | 09:55 PM

kenv

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From: levittown pa. usa Even a bad day with my `Vette, is better than a good day at work

St. Jude Donor '10

aren`t the C-5s a single exhaust pipe?

Dec 29, 2004 | 10:36 PM

JackDidley

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From: Database Error Indiana

Quote:

Originally Posted by kenv

aren`t the C-5s a single exhaust pipe?

Good question. I wasn't sure the LT1s had duals. A couple weeks ago there was a thread about flow of one large pipe compared to two small ones but at the time I didn't pay much attention.

Dec 29, 2004 | 10:56 PM

1989redvette

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From: Meadville PA

diameter makes a big differance.. 3" single 2.25" dual.. the voluume is what makes the diff.. restriction is the biggest obsticle in the exhaust world always has been.. i would also be curious if a single 3" mid pipe could flow like two 2.5 dual pipes out teh back anyone have some numbers ??