Forged 347 vs. 408 stroker - LS1TECH

Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Generation III Internal Engine
Sign in using an external account
Register Forgot Password?
Search


Generation III Internal Engine
1997-2006 LS1 | LS6
Sponsored by
Texas Speed & Performance

Forged 347 vs. 408 stroker

Reply
 
Thread Tools Search this Thread
Old 06-15-2005, 03:35 PM   #1
TECH Enthusiast
 
Trader Rating: 88
Join Date: Oct 2003
Location: Chicago
Posts: 503
Default Forged 347 vs. 408 stroker

I know this is a very general question, but assuming you don't cut costs on either one, which of the two will be cheaper and put out more power? What factors should be taken into consideration when deciding between the two different types of motors?
Pimpium57 is offline   Reply With Quote
Old 06-15-2005, 03:38 PM   #2
TECH Veteran
 
Wnts2Go10O's Avatar
 
Trader Rating: 12
Join Date: Dec 2004
Location: Rockville, MD
Posts: 4,310
Send a message via AIM to Wnts2Go10O
Default

if its N/A then its plain simple "there is NO replacement for displacement." the 408, well built, will be the preverbial stump puller...or a literal one if you like. the 347 would be a good high rpm FI motor.
Wnts2Go10O is offline   Reply With Quote
Old 06-15-2005, 04:06 PM   #3
TECH Junkie
 
Mike K.'s Avatar
 
Trader Rating: 0
Join Date: Dec 2001
Location: Lakeland, FL
Posts: 3,242
Send a message via AIM to Mike K. Send a message via MSN to Mike K.
Default

exactly what he said, for NA the 408 will make more power all else being equal, but the 347 can be built much cheaper and if you have a power adder it really may not matter too much anyways plus you save the weight with the aluminum block.
__________________
2001 Z28 (APE 408 SuperStroker )

http://img.photobucket.com/albums/v4...r/z282copy.jpg

539 rwhp 478 rwtq NA / 677.1 rwhp 571 rwtq on the 150 Progressive Squeeze
Mike K. is offline   Reply With Quote
Old 06-15-2005, 04:16 PM   #4
Banned
 
JZ'sTA's Avatar
 
Trader Rating: 23
Join Date: Jan 2004
Location: Ft. Myers Fl
Posts: 3,126
Default

Then you can always factor in the 370 which is a 408 sing a stock size crank or stock crank.
There is also a All bore 388 which is a great motor to turn some serious RPM while keeping the weight down.
I know you only asked for the 347 vs 408 comparision, just thought I would bring up a couple different combo's.
In my oponion the 408 is bad ***, and well worth the extra money. You can run a large cam without haveing the normal large cam issue's and the car will drive more like stock until you hit the gas pedal.
What kind of setup are you thinking about doing.
JZ'sTA is offline   Reply With Quote
Old 06-15-2005, 06:14 PM   #5
TECH Senior Member
 
Ragtop 99's Avatar
 
Trader Rating: 7
Join Date: Nov 2001
Location: Bethesda, MD
Posts: 9,492
Default

Well, budget IS a big factor. Setting cash aside, other than mpg, most people will not see much downside to bigger cubes and the upside is a lot of torque & HP. If you have a very specific plan or goal, you need to post it up.
__________________
2008 Atomic Orange Coupe 3LT, CC3, Z51 M6
LG Pros with cats, Vararam, 160 T-stat, DTE 3.90s, Elite tunnel plate, Pfadt JOC Stage I, catch can, LG Wheels with 275 / 325 Invos MGW Shifter, EPS 226/230 115 cam, Peak ported IM & TB, HPT.
Gone but not forgotten:
2002 Camaro SS Droptop. cam, gears, etc.
11 sec 99 Z28 Vert, RIP.
Ragtop 99 is offline   Reply With Quote
Old 06-15-2005, 06:49 PM   #6
TECH Regular
 
xxxhp's Avatar
 
Trader Rating: 0
Join Date: Nov 2001
Posts: 409
Default

I would vote for a 402 LS2 stroker. Would weigh 80 lbs less than a 408. Price & power should be very close
__________________
2001 Quick Silver C5 Coupe

C5-R 427 - HP Performance Twin 76mm Turbo kit
FLT Level V 4L65-E

Best 1/4 mile run: 9.5@154 mph
xxxhp is offline   Reply With Quote
Old 06-15-2005, 09:06 PM   #7
TECH Enthusiast
 
Trader Rating: 88
Join Date: Oct 2003
Location: Chicago
Posts: 503
Default

Quick overview of my goals/use of the car........looking to have it streetable (driven a few days out of the week in the summer) and make as much power as possible without being a high maintainence car. Will see several track trips per season, but my main concern is going fast on the street while being behind a 6 spd trans. FI is out of the question, N/A and nitrous only.
Pimpium57 is offline   Reply With Quote
Old 06-15-2005, 09:06 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Two step nj02z Drag Racing Tech 1 02-23-2014 09:25 AM
Two complete 4500psi nano JUICED01 Parts Classifieds 2 08-07-2013 04:33 PM
wanted two wastegates Camaro9969 Parts Classifieds 0 09-12-2012 08:31 PM


Tags
347, 408, 408w, 9000, engine, forged, ls1, make, power, rpm, striker, stroker, vs, weight, wellbuilt


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 10:27 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details