Max HP / TQ, with only airflow mods?
 

Does anyone know approximate available numbers for HP and Torque, with only airflow modifications?

To try to be clear, I'm giving a motor with 2"+ headers, 3" pipes, and max induction porting - Air Horn, TB, Plenum, IH's, and cyl head port inlets.

What #'s might be had? And what are the numbers, in millimeters, for each intake component???

And finally, WRT the memory calibration module, is more coding necessary, besides Marc's 2' delete chip?

Re: Max HP / TQ, with only airflow mods?
 

I would only give it a guess of 500hp 450tq with a good tune. that about what I have with PnP thru heads 33mm & 63mm TB, headers and Corsa's

Re: Max HP / TQ, with only airflow mods?
 

500? No ****** there, Steve?

WHat are you meaning by 'PnP' thru heads'? Valvework? Plug n Play :confused: ???

Is there that much choke in the intake?

Re: Max HP / TQ, with only airflow mods?
 

Just a guess based on what I ended up with, PnP port and polish intake injector housing and heads, yes the valves were done. Cams retimed to 93-95 specs.

Re: Max HP / TQ, with only airflow mods?
 

This is the Haibech 500 package less the lightweight flywheel.

I think a better question is the max hp without going into the cylinder heads or cams?

Re: Max HP / TQ, with only airflow mods?
 

Without touching the heads or cams its 400 rwhp give or take 5-10; so if you use .85 as the standard to convert that puts you in the 470-480 at the crank......

I know someone will chime in and say why the ,85 conversion is not correct because parasitic loss only takes up X amount of power....blah blah blah...

But I am going with 470-480hp

495-510 with heads........give or take 5-10....

Re: Max HP / TQ, with only airflow mods?
 

Around 430rwhp with full head porting... maybe 410rwhp with just the tops of the head intake ports massaged.

Re: Max HP / TQ, with only airflow mods?
 

Yeah there PR - that's another way to word what I'm askin' here; no hardware upgrading, just induction porting...