Recommendation for Exhaust

[Shawn Strunk]

Scott,
What size exhaust do you recommend, 3 or 2.5 inch?

Shawn

[deuce_454]

a 4 stroke engine will always always perform better with less resistance on the exhaust.. the less resistance, the less pumping loss.. if this wasnt the case, no one could sell a cutout...

so on a full length exhaust, especially with mufflers you should go as big as practically possible.. with the added benefit of deeper and better sound.. the only place you should considder a smller diameter is if you run a merge collector...

i have installed a dual 3.5 inch on a 64 skylark with a 400 Hp SB buick. and it was the meanest sounding exhaust ive ever heard... low mean.. rumble,

[XcYZ]

Originally Posted by Shawn Strunk

Scott,
What size exhaust do you recommend, 3 or 2.5 inch?

Shawn

3", without a doubt.

[rocketman]

I put Magnaflow on my wifes camaro it sounds good, I run Flowmasters on everything else

[Vegas69]

Originally Posted by deuce_454

a 4 stroke engine will always always perform better with less resistance on the exhaust.. the less resistance, the less pumping loss.. if this wasnt the case, no one could sell a cutout...

so on a full length exhaust, especially with mufflers you should go as big as practically possible.. with the added benefit of deeper and better sound.. the only place you should considder a smller diameter is if you run a merge collector...

i have installed a dual 3.5 inch on a 64 skylark with a 400 Hp SB buick. and it was the meanest sounding exhaust ive ever heard... low mean.. rumble,

Disagree... It will perform better at the drag strip but not on the street. I have played with baffles in my pipes on my motorcycle. They came with 12 inch baffles which provided gobs of torque but limited top end. I pulled them out and had a ton of high rpm horsepower but a huge loss of low rpm torque. I cut them in half and now have all my torque back and good high rpm performance.
Granted you probably would never know the difference on most of these high horsepower engines we are running but if you were to do a comparison with a good muffler and correct size pipe vs straight exhast I bet you like the drivability of a true system.

[Shawn Strunk]

Scott,

What size exhaust and muffler is in your video clip "startup with spintech mufflers"? Is it too loud inside the car to enjoy with your wife? Does it draw peoples attention where ever you go?

Shawn

[rwhite692]

Originally Posted by Shawn Strunk

....The guys @ spintech have informed me if I want loud, go with the pro street muffler. The sportsman street is their next muffler which is a little quieter followed by the sportsman XL muffler which is even quieter. Can anyone give any more input on these mufflers?

.....Also, should I go with 3 inch or 2.5 inch?.....

I had the Spintech (Sportsman Street) system on my 383, in 2.5" with a Dr.Gas X-pipe, and I really liked them...I ran them with a pair of Hedman shorty headers...They have a very edgy/raspy/mechanical sound (think sprint car) ...and they did not have any "drone" inside the car at cruising speed. At WOT, they really sound mean...

[COYBILT]

Originally Posted by Steve1968LS2

I second the Magnaflow suggestion. Loud under acceleration yet more refined.


If you want a very loud and "raw" sound then Spintech..

Ill second that on the spintechs, I've got them on the jaguar and man the LT1 is nice sounding.
I have the Sportsman XLs 2.5" on my jaguar( cammed and ported LT1) and really they are alittle loud but not bad.
I would say they give a perfect level most guys are looking for on the street. The pro streets sound great with a high compression big block, but damn there loud. If you want any more info feel free to contact me

[seattle67]

Those are some great Spintech sound clips. Anyone have some good Magnaflow clips? Like Shawn, I've narrowed my selection down to 3" Spintech Sportsman Streets vs. 3" Magnaflows (for a 600 hp BB). Jury is still out ...

[rockdogz]

Another vote for 3" SpinTechs here...

http://www.camarorestoration.com/gal...embly/MOV03623