doorgunner

Brace yourself.......Harley Davidson mufflers for now......

the exhaust is original from the manifolds to the Harley mufflers...the look is old school until the project is nearly completed (?side-pipes or Oem-location aftermarket mufflers?)

redwingvette

Here is my Manaflow system from stock manifolds at 2 1/4" to the X-pipe and out at 2" then I custom fit a pair of Gibson tips out the back.

Mod75

Dam, just Dam, talk about exhaust bling, no i am not going to post my exhaust its stock aluminized steel and been on for 15 years now, its a driver.
My crossover is at the back of the trans pan

All of this stuff looks like a diesel exhaust, are we talking 2 1/2 or 3" here.
What kind of temps are you guys getting with a heat gun at the headers/mufflers?

pauldana

3" pips, with 1 7/8 header tubs:-)
427 650hp

jcloving

Here is my setup. It's a magnaflow setup for a '74 that was slightly modified. My vette is a '76. 2.5" True duals, X pipe. Stainless all the way. Ceramic coated headers. Copper gaskets, Stage 8 bolts.

Tjf2000

Are those magnaflows loud? I was looking at the exact same set up for my 76.

tektrans

Nice well made system.
No way those cats are doing anything that far back though.
Just for the checkpoints?

MIKE80

Nice exhaust systems! Do you guys have problems with any part of your system scraping pavement?

Some of the parks and roads around me have speed bumps.

pauldana

YES.... Thinking of making some sort of skid plat or rail....

MIKE80

I need a new exhaust system. I thought about a rear exit system. Mine is lowered, so I decided that I'm going to stick with sidepipes to avoid clearance issues.

pauldana

side pipes are shown to have a lot less HP...
the only place it really hits is just under the spring/rear-end. so im thinking a 1/2" slit rail mounted on each side of the 2 pips...

jim-81

holy cow! how do you guys get the undersides of your cars looking like that??? haha

MIKE80

Yeah, under the rear would probably be a low area for mine. I have a BTO trans crossmember and dual mount rear spring with a ground to center wheel well lip height of 26.25" front and 27.25" rear.
With sidepipes I'll probably get STS inserts, try no caps or drilled caps, or 3" inner baffle from ClassicChambered. 1 7/8" primary to 4" and remove the inserts is another option if I need more power. I'll have some fun playing around with it. I'm not sure how much less hp the difference will be than a rear exit. Good idea you have on the skids to protect the pipes where you are scraping.

qwank

I have abut 2.5'' ground clearance in the rear, That's why I'm going side exhaust

Les

JFC, that's a lot of power for a 427. Is that number from an engine dyno run?

pauldana

That's about what I have in the low spot of the pipes.....I think a skid is going to be a must


That would be crank hp..... I have a build thread that will tell you all about it.... Very excited to get her back out on the track

ctuinstra

That my friend is a work of art! That is exactly what I am looking for my '68! Ceramic headers, 2.5" stainless, X-pipe. I've got to have something like that.

Bee Jay

Just populate your garage. Look at the space above your Avitar!

69427

Paul, I'm a big fan of hooking up a pressure gauge to my exhaust systems to get an idea of the actual capability/restriction of the system. Sounds like you've got a healthy engine for this year's track days. Seems prudent to check if your exhaust system is a match for your engine.

pauldana

Bee Jay.... What??? ok... im kind of slooooooow,,,,, I don't get it???


69427 at this point... i'm getting so done... i just want to drive her again.... and if a 3" mandrel bend pipe with an X-pipe going through 2, 3" straight through Borla mufflers have back pressure... then so be it.. lol... I give.. p:-)