69 convertible - flowmaster exhaust

dfayette

Member

Feb 19, 2012

9

1

13

Feb 19, 2012

#1

• Feb 19, 2012

• #1

Has anyone installed a header back 2 1/2 inch flowmaster system in a 69 or 70 convertible? They say it can be installed with an h-pipe modification. I'm interested in how you made it fit correctly between the seat frame connectors.
I installed a 351C, C6 and a 3 1/2 inch aluminum driveshaft. Not much room left and I still need to install the subframe connector in some way.

Thanks

 

chepsk8

Founding Member

Jan 15, 2001

2,203

3

49

Easton, PA

Feb 21, 2012

#2

• Feb 21, 2012

• #2

I had my system custom bent, as I had an AOD bhind the 5.0.

Your car has more stuff, so it will be a tight fit.

Custom time.

 

dfayette

Member

Feb 19, 2012

9

1

13

Feb 21, 2012

#3

• Feb 21, 2012

• #3

Thanks, I'm guessing I'll have to take it in to have it custom fit. I was hoping someone had done it and could tell me how before I started cutting things up.

 

candphall

Active Member

Jun 8, 2009

488

32

49

Orlando Florida

Feb 22, 2012

#4

• Feb 22, 2012

• #4

I have a 69 sport roof 351C and a C6 wil I have the same problems. Or is the drop model an issue?

 

dfayette

Member

Feb 19, 2012

9

1

13

Feb 22, 2012

#5

• Feb 22, 2012

• #5

Only the convertible. This exhaust would fit perfectly in a fastback or coupe.

 

W

wavefan70s

New Member

Nov 8, 2011

8

0

1

Feb 22, 2012

#6

• Feb 22, 2012

• #6

I have a 71 cv ill post the exhaust pics i have hope it helps.

 

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dfayette

Member

Feb 19, 2012

9

1

13

Feb 23, 2012

#7

• Feb 23, 2012

• #7

Thanks, not much different from below. Do you have any issues with the exhaust being below the frame? Any power issues with running a straight thru dual exhaust without an h-pipe?

 

W

wavefan70s

New Member

Nov 8, 2011

8

0

1

Feb 24, 2012

#8

• Feb 24, 2012

• #8

To be quite honest.im not savy enough to notice powerwise.im learning though.i havent had any problems that your average person would notice power wise.i actually inherited the car from my father.as for it being below the frame no issues as of yet.there are a few parking lots i have gotten nervous in that had high speed bumps.im not sure why he chose to run the exhaust that way.im guessing when the old engine was gone.the big block 521 crate motor that was put in it may have had clearance issues.