How much lighter are SSI's than standard post 74 exchanges with cat?

Noel · 03-28-2003, 10:07 AM

I'm considering upgrading to SSIs and was looking for another benefit.

Thanks,

Noel

SilverPoly · 03-28-2003, 10:15 AM

I'm going to have this upgrade done to my SC in the next week or two.

As far as weight goes, I don't know but from my research on the SSI superstars... it would not only be a lightweight benefit, there would be a performance gain also. Not to mention, making it easier to do exhaust valve adjustments getting rid of the cat.

lol

The quality of 'real' SSIs are superb, so I've heard.

island911 · 03-28-2003, 10:23 AM

I measured ~14lb delta . . .though that was w/ a gutted cat-convertor. . . .the ceramic guts are pretty much the same material as brick!

speeder · 03-28-2003, 10:53 AM

This is a question that I have been wondering as well, and I forgot to weigh all of the old stuff before I chucked part of it.

Island, which muffler are you running w/ new set-up?

Tim Walsh · Tim Walsh's Garage

I did this yesterday w/ headers instead of SSI's and I can vouch for how much they lighten the car. hehe and now my clutch cables doesn't bind

Sometimes don't you just hate PO's?

island911 · 03-28-2003, 10:58 AM

speeder --painted SS dansk, single out, stock dia. tailpipe.

also, the old muffler was also rattling (read: lightened like an early car)

It would be interesting to weigh new stock.

Joe Bob · Joe Bob's Garage

SSIs are mostly used to backdate SCs and to provide a longer laster alternative to the rust prone regular steel early HEs.....but they are about 20% lighter....