BStone

OK, yet another one kicking around my noggin..

As mentioned previously, I have the CCC on my car. If I want to run dual exhaust, I undertsand that I will need to change the dvr side manifold to an S type.

What other mods will need to be done to the passenger side due to the CCC?

Thanks for any help

copper128

After removing the driver's side manifold and crossover pipe, just cap the exhaust crossover inlet on the passenger side manifold with this:



(The Parts Place #EX2604T)or one like it. No need to touch the CCC setup at all. Then install the LH side of the dual exhaust. The whole RH side can stay the same as it was.

66ninetyeightls

Here ya go:

http://www.themotorcompany.com/Full-...d-p-16158.html

oldcutlass

Or you can just take it to a reputable exhaust shop and they can fabricate a cap and run your other pipe and muffler! It's a simple install!

66ninetyeightls

BUTCHER!!!!!!!

Oldsmaniac

Err, well not really. It will be very unsightly, involved, if trying to run duals without changing the drivers side manifold. The B body is a different animal for duals from 65 to 70.

copper128

Yep, very difficult to make that bend under the steering linkage if you retain the center-outlet LH manifold. Very restrictive to flow, too.

I know - I had to do it on my Delmont 330. The S manifold won't fit on a small-block and there is no other LH manifold which will fit a small block in the 65-70 88/98 chassis

BStone

So if I go with the S manifold and convert to duals, is there any real power gains or is this really just a cosmetic upgrade?

copper128

I think you may get a little seat-of-the-pants improvement.
Plus it'll look and sound much better

oldcutlass

Is it not the same for a 330 Cutlass with single exhast and a cross over?

copper128

If you want to do it on the cheap, I have a "cosmetically challenged" original S manifold that I would sell for 1/2 of what a reproduction goes for. It was rust-pitted and had one bolt ear broken off. I had it blasted, the port side resurfaced and the bolt ear welded, then I painted it with Eastwood stainless steel paint.

copper128

No, the LH manifold for 330/350 65-70 88's was unique to that chassis. Nothing else fits this combination and no factory dual exhaust option was offered.

66ninetyeightls

Its gotta be good for at least an extra 125 at the wheels!!!! LOL

Might not be much more power but you will be much happier with the end result. Will look, feel and sound much better. I am getting this exact job done on mine next week once my fuel tank is repaired.

66ninetyeightls

???????

oldcutlass

No ****!!!!!!!!

BStone

After waiting for these guys to call back, I got ahold of them again and was told "Oh yeah, we don't ship to Canada." You think I was in Uzbekistan or something They referred me to Thornton.

I have been waiting for three days for Thornton to get back to me as to what the shipping cost is and whether they will even ship to Canada (NB - Thornton called today and package should be out tomorrow!)

66ninetyeightls

Nice!!!