Yeah I was thinking about getting ported manifolds a few months back, but screw it I've secretly been getting ready for what I just finish for the past 2 weeks: SLP Headers.

First off, anyone else do this to a pre 2000 Bonneville? Because it was a PITA! We had to cut off part of a bracket that was holding a small 4" strut that probably absorbed some vibration from the trans. I asked a 2000 owner and they said it wasn't in their car and the GTP owner who helped me doesn't have this. Why must Bonnevilles be such a pain?!?!?

Our guess was this might have been to prevent wheel hop...screw it I'll be fine (fingers crossed).

Otherwise a LOT of tranny fluid spilled out when the trans tube was removed to replace it with the W-body one, so the system was semi-flushed.

Enough of me though, enjoy the pictures!!!!



Using stock CAT for now:


Short extension from CAT to resonator (keeps the sleeper sound):


Next? 3.2" pulley for sure! My boost is down to roughly 9.5 when I went WOT in 2nd at 60mph; used to be 11.5psi...I think. Also gonna move down to Autolite 103 plugs gapped at .050 and finally I need the rear o2 sensor spoof since its throwing a code asking due to no rear o2 even plugged in. It was a bloody mess, but cleaned up nicely in the end....I'll never do it to a Bonneville again.

That'* the front tranny mount you modified, I made mine solid with no known ill effects....

All I removed was the mini shock absorbor and the top part of the bracket that held it in...I'm thinking I should be fine.

Glad you got it in, looks good. I see you wrapped the flexpipe as well. How does it sound?

Flexpipe still ticks. Not bad, but the sound is still there.

Also I put the rear header on from the bottom.

Kyle, are those coated headers, or do you plan to wrap them sometime?

Oooo! Shiny new toy.
So after the 3.2 what do you hope for at the track?

They are ceramic coated. Hoping for 13.7'*.

whats next after the 3.2?

IC and drag slicks.