tvs manifold porting

[backchannel]

Runs are before and after HVI manifold porting.
Ported lost 8kpa boost pressure and made 20 more rwhp.
Runs are best hp for each. Afr is different and affected torque but richer or leaner was nearly insignificant on either hp.
This is a 2300 Camaro kit on my 08/Z06 with custom drive 2.85 overall ratio.

[vettethret]

Originally Posted by backchannel

Runs are before and after HVI manifold porting.
Ported lost 8kpa boost pressure and made 20 more rwhp.
Runs are best hp for each. Afr is different and affected torque but richer or leaner was nearly insignificant on either hp.
This is a 2300 Camaro kit on my 08/Z06 with custom drive 2.85 overall ratio.

Very nice. What all is involved in porting the manifold (Cost?). Was there a loss in boost? I'm n ot sure what KPA is.

[backchannel]

Manifold has hvi [high velocity] ports that are restricted in a vee shape. Not all are like this but the Camaro kits are. Simple to grind out as it is only at the port match area.
Manifold pressure was monitered in kpa instead of psi. 100 kpa=1bar or about 14.5 psi. Altitude fuddles are the numbers but the dyno run 56 would have been 8.8 psi boost vs. 9.4 for run 50. I can speed the blower up about 5% more safely which I plan to do but will not get close to the boost levels of guys at sea level.
Waiting for news on your animal.