Exhaust Sound

[Dwight]

hard hit at idle is all in the cam and sidepipes.

I installed the Classic Cobra Pack on my Cobra. My small block sounds like a big block.

Classic Chambered Exhaust Inc. - Cobra
Dwight

[DanEC]

Originally Posted by Dwight

hard hit at idle is all in the cam and sidepipes.

Dwight

And compression:

A lot of cam "and compression" together, will really make your engine hit hard at idle. You may not like some of the other attributes entirely, however.

[Dwight]

Yes I forgot about compression.
I think you can run more lobe separation and less compression and still get a hard hit at idle. Best to check with someone who understands cams.

I run Comp cam in my 354 (347) Cobra motor with .590 / .595 lift and a lobe separation of 112. Compression 10.67.
My stock Ford computer with a piggy back SCT chip makes it all work.
350 rwtq at 2500 rpm
great street motor but rough on the rear tires
Dwight

[Mike I]

Originally Posted by DanEC

And compression:

A lot of cam "and compression" together, will really make your engine hit hard at idle. You may not like some of the other attributes entirely, however.

Agree totally with Dan's comments, the best sounding idle I ever had was a SBC in a '63 Vette with 12.5:1 CR, an off-road mechanical lifter cam and very minimal exhaust...but, as Dan states, it only made power above 6k and was a bear to drive on the street...

[buddyg]

Originally Posted by Dwight

hard hit at idle is all in the cam and sidepipes.

I installed the Classic Cobra Pack on my Cobra. My small block sounds like a big block.

Classic Chambered Exhaust Inc. - Cobra
Dwight

These guys are saying 100hp and 100tq increase by just changing these??

Seems very optimistic?

[mdross1]

Originally Posted by Dwight

hard hit at idle is all in the cam and sidepipes.

I installed the Classic Cobra Pack on my Cobra. My small block sounds like a big block.

Classic Chambered Exhaust Inc. - Cobra
Dwight

This muffler design is the cats. I had a custom set of stainless mufflers made for our 155" Harley they are everything advertised especially the sound. Run them one way for performance and sound turn them 180 degrees they are a little quieter and flow a tad less.