View Full Version : 421 rwhp / 420 rwt

09-13-2004, 01:43 PM
Pete has done it again.

This setup previously made 365 rwhp/355 rwtq

'99 4.2L 5-spd, Powerdyne, CNC'd heads, 211/.523 cam, 65mm TB, 1.8 RRs, JBA headers, custom X off-road, 75mm Pro-M, 42#s, Mach I duals, Ripper, PHP 8.8, Steeda UCAs, LCAs, 3.73s, Alum driveshaft, 245/45R17s on Silver Bullitts
11.8 @ 116 (on ET Streets)
365 rwhp/355 ft/lbs

He just added:
a BBK 70mm TB, the 90mm SCT MAF, 60#s and a new blower pulley
and made 421 rwhp / 420 rwt with fuel delivery issues around 5500 rpm.

09-13-2004, 03:26 PM
Is that with stock style (hyper) pistons? Boost level?

09-13-2004, 07:07 PM
It is a stock 4.2 bottom end.

He is running about 10#'s of boost.

09-13-2004, 10:56 PM
sweet! :D

Jesse James
09-14-2004, 06:32 PM
It is a stock 4.2 bottom end.

He is running about 10#'s of boost.

That's Mean Kirk! :shifter:

10-25-2004, 06:48 AM
He has just raised the bar again. 462rwhp and 460rwt

Fresh Focus pump and some bucket mods to improve fuel pressure.
Some more tuning with A/F and spark.
A couple of gallons of 100 octane mixed with my pump gas as insurance.
And some intercooler in a white bottle compliments of Compu-Car. It was a 25 dry shot.

Just can't seem to break my "weak" stock shortblock.

Jesse James
10-25-2004, 08:23 PM
:thud: OMG that's Modded Cobra territory. :shifter:

10-25-2004, 08:31 PM
Pretty cool isn't it?? :D

Jesse James
10-25-2004, 08:34 PM
:rockon: :banana: You betcha Kirk!

10-25-2004, 08:37 PM
Stock short block , ported heads & intakes mild cam little gas to cool.

I think he has more that can be tweaked out.

10-28-2004, 09:16 AM
He made a pass last night.

11.3 @ 122 :shifter:

10-28-2004, 12:23 PM
he's gettin' there! :D

i take it he got kicked out after that pass? i think he was the guy who refused to put a roll bar in right?

10-28-2004, 12:48 PM
Yes & he popped his engine at the top end of the track.

He is going to put another in. Needs more fuel delivery, the 300lph focus pump was not keeping up.

10-28-2004, 11:25 PM
i was wondering when that engine was gonna breathe its last breath... regardless though, quite impressive. :thewave:

10-29-2004, 06:22 AM
Well it was a combination of things.

He does not know if the NO2 fired, temps were rising and he was detotnating at the top of the track & drove it through the traps.

He got the time & will rebuild & be back. same setup.

10-29-2004, 10:29 AM
he's not gonna put stronger internals in there while he's got it apart? i guess the stock stuff didn't hold up too badly, so i guess that wouldn't be the worst choice either.

10-29-2004, 10:30 AM
The stock parts did not fail. All he is considering is maybe different pistons.

10-29-2004, 10:31 AM
holy wow do you reply fast. :D

11-08-2004, 08:52 PM
Two pics for all of you V6 fans: