ls1 346 vs 383

Reply Subscribe

Thread Tools

Search this Thread

11-25-2014, 10:33 PM

stherngent

Launching!

Thread Starter

iTrader: (7)

Join Date: Sep 2012

Location: North Alabama

Posts: 261

Likes: 0

Received 0 Likes on 0 Posts

ls1 346 vs 383

What would be the benefit of going 383 stroker other than forged internals?

Reply Like

11-26-2014, 08:04 AM

thunderstruck507

11 Second Club

iTrader: (18)

Join Date: Mar 2008

Location: Northwest AR

Posts: 8,357

Likes: 1

Received 21 Likes on 17 Posts

more torque and if the same cam, heads, intake are used it will likely peak slightly sooner

Reply Like

11-27-2014, 02:42 PM

stherngent

Launching!

Thread Starter

iTrader: (7)

Join Date: Sep 2012

Location: North Alabama

Posts: 261

Likes: 0

Received 0 Likes on 0 Posts

Yea I'm gonna re use heads and cam, I was wondering if their would be any benefit. I'm making 430rwhp now.

Reply Like

11-27-2014, 07:26 PM

mchdg86

TECH Enthusiast

iTrader: (3)

Join Date: Dec 2004

Location: Tulsa OK

Posts: 514

Likes: 0

Received 0 Likes on 0 Posts

What heads and cam do you have now?

Reply Like

11-28-2014, 08:25 AM

stherngent

Launching!

Thread Starter

iTrader: (7)

Join Date: Sep 2012

Location: North Alabama

Posts: 261

Likes: 0

Received 0 Likes on 0 Posts

Street heat stage 2 cam and ported 241's

Reply Like

11-29-2014, 01:11 AM

Detoxx03

10 Second Club

iTrader: (14)

Join Date: Jan 2007

Location: Woodward Avenue

Posts: 7,336

Likes: 12

Received 72 Likes on 37 Posts

When I did it in 2011 I had a gains of 42rwhp/42rwtq.

Reply Like

11-29-2014, 06:51 AM

stherngent

Launching!

Thread Starter

iTrader: (7)

Join Date: Sep 2012

Location: North Alabama

Posts: 261

Likes: 0

Received 0 Likes on 0 Posts

What hp did you start out with?

Reply Like

Trending Topics

Low Mile Per Hour after LT install

58

1.2k
do you run heavier oil when running a turbo?

19

373
5.3LS swap into C5 corvette

13

282
"Barn find" Revival - What to replace?

12

235
Streetable cam

10

353

11-29-2014, 10:16 AM

HCI2000SS

TECH Senior Member

iTrader: (2)

Join Date: Aug 2012

Location: Howell & Fenton MI

Posts: 11,145

Likes: 0

Received 15 Likes on 15 Posts

Bump the compression while you are at it too

When I switched my HCI from my 5.7 to the 6.0 it was significantly faster

Reply Like

11-29-2014, 11:47 AM

Detoxx03

10 Second Club

iTrader: (14)

Join Date: Jan 2007

Location: Woodward Avenue

Posts: 7,336

Likes: 12

Received 72 Likes on 37 Posts

Quote:

Originally Posted by stherngent

what hp did you start out with?

424/390

Reply Like

11-29-2014, 11:56 AM

#10

stherngent

Launching!

Thread Starter

iTrader: (7)

Join Date: Sep 2012

Location: North Alabama

Posts: 261

Likes: 0

Received 0 Likes on 0 Posts

Sounds good ��

Reply Like

12-03-2014, 09:41 AM

#11

Sigforty

11 Second Club

Join Date: Jun 2005

Location: Was New Orleans, but swam to Baton Rouge

Posts: 1,537

Likes: 0

Received 0 Likes on 0 Posts

The bump in low end torque is the biggest improvement. It definitely makes the car get out of corners and start moving quicker. You would also see some power gains as well. I made just over 500 rwhp with my 383 and around 465ish rwtq I believe.

Reply Like

12-03-2014, 02:19 PM

#12

thunderstruck507

11 Second Club

iTrader: (18)

Join Date: Mar 2008

Location: Northwest AR

Posts: 8,357

Likes: 1

Received 21 Likes on 17 Posts

Quote:

Originally Posted by Detoxx03

When I did it in 2011 I had a gains of 42rwhp/42rwtq.

What else did you change? I'm assuming same heads but bigger cam?

Reply Like

12-03-2014, 09:33 PM

#13

Detoxx03

10 Second Club

iTrader: (14)

Join Date: Jan 2007

Location: Woodward Avenue

Posts: 7,336

Likes: 12

Received 72 Likes on 37 Posts

Quote:

Originally Posted by thunderstruck507

What else did you change? I'm assuming same heads but bigger cam?

Yeah had the crappy 241's on still. Was planning to change but then got rear ended so that plan was scrapped. Went from a F11 to a 239/248 .640/.629 114+4

Reply Like