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Building a 383

1K views 6 replies 6 participants last post by  A sick ws6 
#1 ·
Courious about hp numbers , building a 383 list of parts
Scat 6.00 4340 H beam rods
Scat forged steel crank 3.750
Srp forged pistons
Luniti cam 560 lift at .050 duration is 243/251, also the heads will be ported by loyd elliot port works stage 3, along with porting intake
58mm throttle body, just courious what hp numbers could be expected,
 
#2 ·
Courious about hp numbers , building a 383 list of parts
Scat 6.00 4340 H beam rods
Scat forged steel crank 3.750
Srp forged pistons
Luniti cam 560 lift at .050 duration is 243/251, also the heads will be ported by loyd elliot port works stage 3, along with porting intake
58mm throttle body, just courious what hp numbers could be expected,
Compression Ratio?

KW
 
#3 ·
Why wouldn't you get a custom grind from Lloyd along with the heads and intake? That cam has relatively low lift compared to what he would grind for you. If you are just looking for a number, (and not being a smart ass but Lloyd writes this on his site), a 11.5-12.5:1 383 with AI200s or le3s can do 380-470 rwhp depending on if its an m6 or a4, the rear end if its a 9" or 10 bolt, tune, compression, and profile of the cam.

Make a signature so we know your current mods, if its an a4 or m6, etc. That bottom end is good, your on the right track for heads as well.
 
#4 ·
I was told the most rwhp u could make with an lt1 on pump gas and all NA was 450
 
#6 ·
224/230 cam at .500 lift (give or take some duration and lift) is small for even boost 383. Think there is quite a few 383 NA running around with more than that. Mine is built for boost and pretty close to that at the flywheel.

I was told 230/240 at .550 is good duration and lift for boost motor.
 
#7 ·
Seriously thats what my engine builder told me was 450 rwhp on a na pump gas lt1 would make so i assumed it was true
 
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