Hi guys. I'm putting a HP 500 in my 1998 Cobalt 252. I would like to keep the Captains Choice if possible. Seeing everyone makes a a specific exhaust riser for the HP 500, because it sucked water so bad, I'm wondering if the Keith Eickarts would still revert?

stock cam #169611 .576/.598 222/230 110 LSA

The engine swap will be happening soon, so if I cannot use the CC, I will be removing the Y pipe and blocking off the exhaust opening on the Bravo.

Thanks for any input about this

Are you refeering to the KE aluminum headers? If so I can not imagine an issue with reversion with the hp 500 even with 741 cam. If you have reversion with that set up then I'm Concerned about sucking water up from the lake with my stellings dry to the tip above water platform.

the original hp500 carb'd cams were know to revert,even w/ the tall risers.you either change cam to the 731(a little bump in power) or as you idle in,keep the rpms up and then in neutral,rev it up and shut off at the same time.it blows the little bit of water out.

I had the a HP500 carb w/ KE Exhaust in a 28 Velocity, ran strong for ~150 hours, no reversion issues at all. KE's have full 32" runners, so the water has a long way to run backwards. In fact I have (2) new sets of KEs that I'm going put in the Skater 1 of these days...

I wouldn't run the switchable exhaust with Carbed HP500's unless you swap cams.

OK, so no CC.

I will be eliminating the Y pipe then. Thank you

Yes, I was referring to the Thunder n lightning aluminum exhaust

So the taller riser "fix" still didn't resolve the issue? Damn....

Did you have the short 6" extension that comes off the manifold? Or was it longer/closer to the transom?

X,
The shorter standard 6" Bravo wet tailpipes.
Skater Dean