new 383
03-22-2011, 08:32 PM
#1
Registered User
Thread Starter
Join Date: Dec 2010
Location: South Carolina
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
new 383 Ok, after almost a year of collecting parts to build a new engine for my completely stock 01 Trans Am, I finally saw the fruits of my labor today. I put together a 383 LS6 stroker with LS6 heads (2.5 port), Fast 90/90 (intake ported and matched), 234/239 598/605 114 +1 cam, QTP headers and Kooks true duals (worked like a charm with the QTPs with minimal mods). Started it last night and took it to get tuned today. On a Mustang dyno, the 1st pull was 442, second was 453 with more timing, and the third was 485 with more timing. I was pleased since he had the exact same combo in a vette earlier in the week that came in at 420.
The Kooks exhaust sounds awesome although they are a bit loud for my taste. I might add some cats or resonators at some point but it looks great and apparently performs based on the numbers. I took the car for a spin after the tune and it has some serious get you sideways in a hurry power. I like it. :-)
The Kooks exhaust sounds awesome although they are a bit loud for my taste. I might add some cats or resonators at some point but it looks great and apparently performs based on the numbers. I took the car for a spin after the tune and it has some serious get you sideways in a hurry power. I like it. :-)
03-22-2011, 08:48 PM
#4
TECH Regular
Join Date: Aug 2010
Location: houston, texas
Posts: 462
Likes: 0
Received 0 Likes
on
0 Posts
oh yeah. get a set of gears in it.....totally different animal. if i did it all over again i would probably go with 3.9x's rear gears. already turning 121mph with junk sumitumo's. oh well though. nice numbers. any vids of the kooks exhaust?
Trending Topics
04-11-2011, 09:32 AM
#10
TECH Enthusiast
iTrader: (3)
Join Date: May 2005
Location: York, PA
Posts: 590
Likes: 0
Received 0 Likes
on
0 Posts
471/467 with my 383 AFR 205 heads, LS6 intake, stock TB, 238/240 cam through a 10 bolt. plan on losing some through a new 9 inch, but also look to bring the numbers back up with a 90/90 combo. enjoy the car
04-18-2011, 10:09 AM
#18
And this is why I think the 383 fwiw is the ultimate budget/STREET/strip motor. With a cam that is in the high 230's low 240's duration and .610-.630 lift with a good set of aftermarket heads or cnc'd 243's you can make almost 500rwhp or 500rwhp with 470+rwtq. Now that my friends makes for one fun ride that will idle, cruise with the a/c on and then go run a 10.x 1/4 time after bolting the D/R's on and then drive back home with the a/c and tunes on.
04-18-2011, 08:58 PM
#19
11 Second Club
iTrader: (34)
Join Date: Feb 2005
Location: Ft. Wayne, Indiana
Posts: 3,158
Likes: 0
Received 0 Likes
on
0 Posts
Very true. I do wish that my cam was a bit bigger and more aggressive. Driveability was a concern @ the time and unfortunately now it is money. Down the road I may decide to change the cam and get some better heads to obtain my goal of 500/480 N/A.
For now the Nitrous is being readied and should make it more of an animal than it already is.
For now the Nitrous is being readied and should make it more of an animal than it already is.
04-19-2011, 09:48 AM
#20
12 Second Club
iTrader: (6)
Join Date: Jan 2007
Location: Cumming Ga
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Stroked 383 here, trickflow 215's Kooks 1 7/8's Fast 102 with 96mm TB, and a tiny baby cam because I have a stock converter with an RPM level 5! I put down 453 and 456 on a dynojet. I ran a 12.08 on street tires with a 1.9 60' spinning most of the way. I also balloned the converter and broke the flexplate, Car is currently at vengeance doing a 6 speed conversion and putting at least a VRX5 cam in now!!