99 LS1 Ext Cab 5.7ltr

[93Ext5.7ltr]

Hi,

Back when this thing was a TBI with canfield 195cc heads, a flat-tappet hydro cam - 216/228@.50 with .454/.480 lift@1.5 RR ratio this truck made 219.6 and 312.4 lbtq at the rear wheels. Pretty good I'd say, for the old truck.

Since its heart transplant?

My naturally aspirited LS1 made me proud!!!

Well, LG Motorsports - WHO DID NOT put this truck together, dynoed this bad boy a couple of days ago. I'll post as soon as I can get to a scanner. However, this thing put down. The rear wheel numbers are in....347.6rwhp and 365.7rwtorque.

That's an increase of 128hp and 53lbtq. From what I've seen, those are supercharger numbers in comparison....

When the guys took a look at it, they noticed there was a gob of timing taken out around 4,850rpm. The guys believe that with another tune 20hp more is possible... of course, that means $450.00, but hey - putting 370rwhp - shoot, where's that Ford Lighting now!!!!!!

Will post the sheets cause I know most of you won't believe it until you see it.

Take care.

[RedHeartbeat]

Can't wait to see the new numbers. $450 for a one-time tune? Should have had Allen tune one for you since you can get updates for the cost of shipping when you make future changes to your setup.

[Zick]

Those are good numbers, what mods have you done to it?

[93Ext5.7ltr]

Hi,

Mod list:

1) An LS1 engine inside a 93 pickup!!!!!

okay, really onto the mod list:

1) AFR 205cc Mongoose heads (59cc combustion chambers), 5-angle valves, Ported/polished by AFR, valves supporting up to .650lift - but with 59cc, this means no way should I try a supercharger

2) 6.0L truck intake - better low end torque - so I'm told compared to LS1

3) LS hotcam (219/228@.50 & .525lift)

4) BUILT 4L60E tranny (2300 stall)

5) Edelbrock LS1 shorty headers

6) Custom exhaust (might be missing some parts from the catalytic converter )

7) 3.73 rear end

8) Powertraxx locking differential

9) Fastchip computer flash

Next steps? LS1 Edit flash (to be done by LG Motorsports) - maybe 20 more HP. Next year, probably fly cut the pistons and drop in a X1 or X2 cam by LG Motorsports - maybe 20 more HP). Should get me close to 400HP at the wheels - which would be plenty for me and I'm sure almost too much for the 8.5 inch rear end.