What the hell everyone else does it so lets see what kinda power you guys think i could make


383 stroker Prc 2.5 LS6 heads 2.04 1.57 with 248/254 .611 .613 114 wiend LS6 style aluminum intake or same combo with tfs 215 heads
Oh yeah A4

 

well I am finishing my motor build this weekend, its a 396ci with TSP 2.5 and a 246/252 .633/.643 110
I am hoping for 470rwhp and about 450rwtq with a 4.125 should be a torque monster

 

Hmmm. Through an auto with all supporting bolt-ons? I'll say 460ish rwhp/tq... The LS6-style intake is going to hold you back a bit. I am looking at a 90-92mm set-up for my 383 right now...

 

anyone else

 

I made 432 rwhp and this is before I install my FAST 90/90 which I think would have made me over 440rwhp


based on a 346 ci divided by making that power a 383 should make 470rwhp just from the same setup... dont u think?

 

I would expect anywhere between 450 rwhp and 520 rwhp. It is really hard to say. There is always the question of how that cam with work with each set of heads. I think the best results would come from the Trickflow heads though. What other mods are you thinking of electric water pump, etc? What type of converter do you have and what rear gears. All of those will also have an impact on the final chassis dyno numbers.

 

well i purchased PRC heads today all suporting mods minus electric wp dont trust them for a daily driver 3800 stall and 3.73 gears

 

my 383 with a 246 248 114 cam and patriot II 2.055 heads made 465. changing the Lsa this year looking for more power

 

no one else

 

my 395ci made 458rwhp/461tq
Livernois Stg III's with 231/238 112LSA Cam Motion cam

http://rides.webshots.com/photo/2593...rK?vhost=rides

when dynoed car had...
- ZR1's wih MT ET Radials at 20 psi (forgot to add air)
- 3" Steel driveshaft
- Moser 12 bolt w/ 3.90 gears

Only pass was 11.47 @ 124.3mph (broke d/s before and trans after)

 

Mine made this at the crank last Friday.

 

NOICE!!!!

 

I did a big-bore 383 for a buddy a few years back.
It recently laid down 550/478RW through a TH350 on motor.
Ran 10.5's @132mph &3550lbs raceweight.

 

the big bore 383's always make more power.

 

put out 463/441 with a stock LS6 intake and stock LS1 TB with a smaller cam..238/240

 

what exactly is a big bore 383? i thought the 383 had a .030 bore and the different crank... could someone please explain. i would think that a larger bore would equal more cubes and make it like a 388 or something like that ya know? anyways ...

 

a stroker 382/3 ls1 is a 3.903 /3.905 bore(not .030 over) with a 4 inch crank.
an all bore 383 is a sleeved 4.100bore(i think) and a stock crank

 

I have a race trim vortech blower on mine and have 763 to the rears on pump gas and done on a mustang dyno. I just ran spray to the car but have not tuned it yet with the juice.

 

All bore 383 would be a 4.102" bore and a stock stroke of 3.622".

Otherwise you would make a 383 by using a stock LS1 block honed to 3.905" and installing a 4" crank with the appropriate rod and piston set.

IBADAIR beat me to it....

 

The 'Big Bore' 383 we did was nothing like anything else out there.
I won't use aftermarket sleeved blocks.
We used an Iron 6L block bored to 4.060".
Eagle crankshaft (stock stroke) that we had offset ground to a 3.70" stroke.
SBC 6.125" rods.
Custom Pistons.