want free jegs gear?

Comment on any of our posts with your expertise and we'll send you a bag of JEGS schwag.

Learn More >

Customer q:

I have a '89 formula w/ a tpi 408 stroker I need a catalytic converter to get a sticker. I was looking at getting the Flowmaster 2230125, but it says only good up to a 360cu.  I have a sinister exhaust 3" to a 4".  Single 3" to 4". W/ a spin tech muffler.  Will it work w/ 408? Why is the flowmaster rated to a 360 cu? 389-2230130? Thanks

CAR MAKE & MODEL

make = pontiac

model = formula firebird

year = 1989

JEGS ANSWER:

Sinister offers nothing for their exhaust. You want a single catt at 3''. I suggest either one of the ones shown below that has the best fit. That is what they rate it to. They do the testing and have to give it a number. If you need further assistance, we are here 24/7. Have a good rest of your day.

Kooks Custom Headers GE-307540
‍High Flow Race Catalytic Converter 3" x 7.5"

Kooks Custom Headers GE-3010540
‍High Flow Race Catalytic Converter 3" x 10.5"

car specs

social media

exterior modifications
interior modifications
PERFORMANCE/HANDLING MODIFICATIONS

The JEGS Difference

We are dedicated to providing our customers with the very best in selection,value, same day shipping and lifetime support. Thank you for choosing JEGS!

auto car parts help
Posted on
May 10, 2018
in
Product Info
category

Psst! Want a chance to win FREE SCHWAG? Comment on this post and click here for details on the JEGS Comment Contest >

You Might Also Like

Follow us on Instagram to get notified about new products and discounts

Follow Us