jfm

iTrader: (4)

If you can make 430 rwhp thru an auto trans and 12 bolt,what would you gain with a Lunati 383 kit?

If you have this set up,please post your numbers.I wonder if it is worth the $3K plus price for the kit.

StevieZ

iTrader: (3)

Maybe a little more HP but you will gain lots of torque across the board.

2001 Pewter WS6

iTrader: (43)

I haven't had the chance to get my setup tuned yet or run it at the track. I'll post and let you know what it does in this 90 degree weather with no tuning. The real numbers will out in the fall...

CHRISPY

About 1-1.25 ft Lb of torque per ci increase.

So for a 383 about 35-40RWTQ possibly similar HP. Also you can go larger on the cam that with a HC car but maintain better driveability.

Cheers,
Chris

Jason 98 TA

iTrader: (4)

Our last 383 car put 434hp to the wheels after the 383 rotating assembly and a little bigger cam. Before the stroker it put consistant mid 380s to the wheels with heads & cam. The heads are the same cam, all we did was 383 rotating assembly, and a little bigger cam

Jason 98 TA

iTrader: (4)

That was a automatic also by the way

robertbartsch

Jason:
Interesting...
is there any machining to the block that is necessary on the 383 projects ...is this usually just a clean up of the bores...or do most go with a new block?

TTtop

iTrader: (6)

I just got a 383 lunati kit and MTI LS6 Stage 2 heads installed on my 99 Trans Am.

It made 458rwhp/448rwtq peak.

Horsepower got to 400 at 4700rpm, 450 at 5500rpm, and slides back to 440 at 6500rpm.

Torque got to 400 at 3200rpm, 440 at 3800rpm, 450 at 4900rpm, and then drops to 400 at 6000rpm, 360 at 6500rpm.

Randy

BurnOut

iTrader: (1)

What you gain?? Area under the curve.

TTtop

iTrader: (6)

My previous setup was Stage 1 heads and C2 cam from MTI with all my sig bolt-ons, but through a 10-bolt rear w/3.73 gears.

That combo made 400rwhp at 5500rpm, peaked to 421rwhp at 5900rpm, and backed down to 410rwhp at 6500rpm.

Torque was 370rwtq at 3200rpm, 390 at 3800rpm, 401 at 4900, 365 at 6000rpm, and 335 at 6500.

So I picked up 40+ ft.lbs. of torque just about everywhere in the powerband. Horsepower was up everywhere as well, with the peak going from 421 to 458.

I have the FLP 2 1/2 Y-Pipe right now, when I get a 3 inch Y-Pipe, I should pick up some more hp, might get to 470rwhp.

Randy

bdawg/98mechamta#9

hey pewter , how does your car drive with the big X-ER , and off the record isnt that pretty much the G5x2 but cheaper
i am super curious as to see how your car runs and drives with that cam let us know asap
please !

Scalpel

iTrader: (4)

You gain massive torque, EVERYWHERE over a H/C setup. Torque puts you down the track. Torque is a function of horsepower, if you put down more torque everywhere then you're making more horsepower everywhere. H/C setups that dyno a lot of peak HP have nowhere near the torque that bigger cubes have.

jfm

iTrader: (4)

Thanks for the help gentlemen.Very impressive results.

40/50 hp and great torque over a h/c only package seem to be a good advantage.I have heard that an all bore 383 will be faster than a 383 stroker but you then have to deal with all the sleeve/Darton problems.I guess if you go for the bore you might as well stroke it too.

Mark,get that thing tuned and we can correct your numbers for the heat.I wish you great luck with your new stroker.

SNAXS

Go with the 383 Luanti kit if u want massive 1/4 times...

Bear

iTrader: (1)

LOL John that was exactly my thinking!

Seifer

you get better drivability as well.

jfm

iTrader: (4)

Bear,you cant beat the sound of that "409".

She's real fine,my 409."

2001 Pewter WS6

iTrader: (43)

I still have mail order tuning for my old 220/226 cam only setup. I have to feather the gas for about 5 seconds on startup and she idles fine at 950 in park and about 850 in gear. It doesn't stall but every once is a while. Very livable. I think my PACE 85mm MAF is getting heat soaked. I am going to try and use the factory location for the intake temp sensor and see if that helps. It was reading 125 degrees on atap after the car sat for a while after I drove it. That is when it would stall. I am probably loosing a ton of power as well. With proper tuning I don't think I will have any issues. The vavle train makes a little noise but not that bad. I plan on getting a set of Yella Terra's soon so that issue may go away. Soon as I get a couple of bucks togethere again here I am going to see Mikey at Rapid Motorsports to get it tuned. The new heads, cam and stroker hit set me back a couple of bucks...