I know there is a thread arguing the "advantages" of adding bigger pipes on a 305. So here's some interesting info about the RPO N10 dual catalytic converter exhaust on the 89+ F-bodies. It allegedly added 13% more power to the LB9 305 (205hp to 225hp). Go figure.
Access Google Sites with a personal Google account or Google Workspace account (for business use).
sites.google.com
Still gutless.
Parts to do this properly aren't cheap either.
$225 for an NOS exhaust hanger?
This is for the 5-speed manual trans equipped cars only; GM number 10080747. See our other sales for NOS N10 cat shield and more NOS 3rd gen parts.
www.ebay.com
$100 for a rusty shield?
Find many great new & used options and get the best deals for 89 90 91 92 Z28 Camaro IROC Firebird Trans Am GTA N10 exhaust HEAT SHIELD GTA T5 at the best online prices at eBay! Free shipping for many products!
www.ebay.com
$1000 for an NOS set of pipes:
Engine/Drivetrain/Suspension Parts for Sale - NOS N10 dual cats - Yep you read that correctly. $1000 firm. I have an NOS dual cat N10. I picked it up about 5 year ago from a fella who had it for eons before that. It's been drug around from house to house and from CA to TX but its in great shape...
www.thirdgen.org
Dafuq.
Here's what the factory version looks like:
Exhaust - N10 dual cat exhaust - Been working on this 89 Camaro for the last year. Non running when I got it. G92 optioned/5spd. Pulled out the engine to rebuild. Found the heads no good. Wanted to keep the original block and no heads to be found we went with some 305 vortec heads so I could use...
www.thirdgen.org
Pretty nice actually.
Also interesting are the two different cams available that year for the lowly LB9 with the A4 vs. the LB9 with the M5 and the L89 tree-fiddy with the A4. Talk about peanut cams:
Camshaft Data LiftDurationLobeRockerMotorGM P/NInt.Exh.Int.Exh.SeparationArm Ratio1985 (L69 and LB9)305 AT14088843.403.415202206114.5(115/-114)1986 (LB9)305 AT14094097
www.thirdgen.org
Sheesh.
Natasha took the car out today, and I think she enjoyed the added noise and attention. Also not having the car break down was a bonus. Either way I didn't get yelled at.
Also, I think I figured out what the car sounds like: a stock Hellcat. They don't sound all that good either.