C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

383 or 402 ???????

Thread Tools
 
Search this Thread
 
Old Aug 30, 2006 | 08:46 PM
  #1  
C5Stunner's Avatar
C5Stunner
Thread Starter
Instructor
 
Joined: Aug 2006
Posts: 103
Likes: 0
From: Sacramento Ca
Default FREE ADVICE NEEDED 383 or 402 ???????

I am debating whether or build an LS2 based 402 stroker or an LS1 based 383 stroker.

It is going in a 1998 M6 coupe vette.

I want to know which one is easier to install, less expensive and why,
also besides the obvious inch differences, what type of power will each produce?

My motor is getting pulled tomorrow and I need input.

I live in california and need to pass the smog. Will one pass easier than the other?

I want more power!!!!!!!!!!!! My car is all stock and one of these engines should do the trick. Thanks to all with input.

Adam

Last edited by C5Stunner; Aug 30, 2006 at 08:53 PM. Reason: Wrong title
Reply
Old Aug 30, 2006 | 09:46 PM
  #2  
chriswtx's Avatar
chriswtx
Le Mans Master
20 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
Default

The 402 will cost a little more. Spend the extra $$$ and go 402 with a good set of heads and is from a good engine builder with proven motors. Most of the 402s around here are really fast. Low 11s and high 10 sec cars...
Reply
Old Aug 30, 2006 | 10:08 PM
  #3  
SLPRC5's Avatar
SLPRC5
Le Mans Master
10 Year Member
 
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Default

Go see Terry at MSI... in Roseville, he will give you the info need on both and that will direct you in yor decision making.
Reply
Old Aug 30, 2006 | 10:16 PM
  #4  
jhong321's Avatar
jhong321
Safety Car
15 Year Member
 
Joined: Apr 2004
Posts: 3,818
Likes: 4
From: San Bruno ca
Default

If your old motor is still good I would sugest that you sell it to recoupe some of your money then go out and get a 402 and do the heads and cam. you will still be able to pass cal smog if the cam is not to big. And the cost of the ls2 should only be about 3-400 more then the ls1 but you will get about 460-490 rwhp depending on cam and heads. If you ever want to go for a ride send me a pm. I have a 402 in mine
Reply
Old Aug 31, 2006 | 07:01 AM
  #5  
WKMCD's Avatar
WKMCD
Race Director
15 Year Member
 
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Default

Go with an LS2 based 402. The 97-98 blocks are reportedly a little weaker than the later models.
Reply
Old Aug 31, 2006 | 07:46 AM
  #6  
Wicked Weasel's Avatar
Wicked Weasel
Team Owner
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2004
Posts: 24,652
Likes: 298
From: NJ
St. Jude Donor '05-'08
Default

I was back and forth with this for some time and now have decided on the 402.

I think I just like the sound of saying I have a 402 in the car
Reply

Get notified of new replies

To 383 or 402 ???????





All times are GMT -4. The time now is 09:22 AM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE