Dynamometer Results & Comparisons - Most power NA with a 5.3 head any cubic inch

As the title says, whats the most rwhp or best et youve seen with a ported 5.3 head? All motor. Any cubic inch.

TXCAMSS went low 10's high 9's all motor 408 with a ported 5.3 head I am pretty sure.

I made 486/458 on a 383 w/ 5.3L heads. This was through a stock 78mm throttle body and LS6 intake. Certainly room for improvement with a 90mm intake setup. Also didn't have my exhaust setup optimized. Will probably dyno again in the next month or so.

460/410 six years ago with a TEA 1.5 head hand finished, 230/232 cam, stock intake, stock bottom end, all other bolt ons. The engine would have probably been worth 480rwhp with today's LSX technology (FAST intakes, new tuning methods, etc).

502 rwhp

f body,408,ported 5.3 heads,ls6 intake and tb,pacesetter headers,12 bolt rear


http://i256.photobucket.com/albums/hh190/twinturboz28camaro/rector.jpg

Shawn is that a stick car?

Made 505rwhp with the setup below.

But you have the lord of LT1's:confused:

Made 505rwhp with the setup below.

Holy shit man I think I just saw a ghost.

Holy shit man I think I just saw a ghost.

HA! Still around man, just don't have much time to read or post anymore. Red car is still sitting in the garage. Need to get it running again!!!!

495rwhp here
fbody, 370ci, PRC 5.3's, fast 92/92, pacesetters/duals. Through 3" steel DS, 9"/4.33 and 325/50/15 mickey dr's.

As the title says, whats the most rwhp or best et youve seen with a ported 5.3 head? All motor. Any cubic inch.

TXCAMSS went low 10's high 9's all motor 408 with a ported 5.3 head I am pretty sure.

He made ~520 rwhp through a stalled auto IIRC

500rwhp is pretty doable for sure!!

I have a 6.0 liter and plan on leaving it at 370 inches, I got 4 sets of LS heads. WHich one ported for the most power? Here are the casting#'s

706
862
853
317

I am gonna change the car I think, gonna do some road racing. Put a six speed back in it with a LS in front of it.

Just want something different.

My car made 512/502 with my ported 5.3 TEA stg 1.5 heads on my 408 iron block..really curious to see what a set of trickflow 235's would do on my setup :D

Stock shortblock LS2 , AS 5.3 heads made 455 on a Mustang dyno thru a 12 bolt,unlocked 5K stall. Should go close to 500 thru the more common 6 speed/10 bolt combo on a dyno jet. Rest of motor specs in my signature.

hmmm. I was gonna buy a texas speed 5.3 heads and cam but I didnt think I could trap 124ish in a full weight car on stock cubes. Looks like im wrong.

Love this thread!

My setup only makes 425RW, but thats through a th350 and 4600 non lockup stall, a 9 inch with 4.86 gear, and slicks.

I'm guessing i'm losing a good 25% at least through my drivetrain for dyno numbers.

stock bore lq9, C&C ported 5.3s, fast 92/92, 9.5:1 diamond pistons

4.86 gears you running a 30 inch tire? What kinda RPM is required to get thru the beams?

524/501 862 castings with the set up below.

Our best HP/TQ was 538/500 with a best ET of 9.96@133.5mph. Those heads were special though. Greg Good put his MoJo on them :)

I would think there would be several cars with higher numbers out there today considering we were not a good candidate for high dyno numbers with the A4, 12 bolt etc. I do love this 408 :)

are 799s 5.3?