C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

300hp vs 350hp

Thread Tools
 
Search this Thread
 
Old Feb 23, 2006 | 11:53 PM
  #1  
Coldburn's Avatar
Coldburn
Thread Starter
Instructor
10 Year Member
 
Joined: Apr 2005
Posts: 101
Likes: 0
From: Rowlett Texas
Default 300hp vs 350hp

So what was done to the 350/300 vs the 350/350 to pull another 50 horses? Seems kinda silly to have such a small spread. Was the 350 that much more $?
Reply
Old Feb 24, 2006 | 12:03 AM
  #2  
big_G's Avatar
big_G
Le Mans Master
15 Year Member
 
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Default

Don't have the price difference with me, (I think about $500) I'll edit the post tomorrow. the 350 hp got a forged crank, forged pop-up dome (11:1 v 10.5:1) pistons, lumpier cam, bigger (2.02/1.60) valves, valve cover and air cleaner up-grades. Manual trans. only. Redline was bumped from 5,300 to 6000. The price difference was $105.35 in '68...$131.65 in '70.. What a deal...

Last edited by big_G; Feb 24, 2006 at 09:03 AM.
Reply
Old Feb 24, 2006 | 12:03 PM
  #3  
audiec's Avatar
audiec
Instructor
15 Year Member
 
Joined: Feb 2005
Posts: 215
Likes: 1
From: Belton Missouri
Default

The LT-1 only increased the HP by 20, from what I gather, all the same parts as the L46 except cam and solid lifters. $447 for RPO LT-1.
Reply
Old Feb 24, 2006 | 11:34 PM
  #4  
early shark's Avatar
early shark
Melting Slicks
10 Year Member
 
Joined: Nov 2004
Posts: 2,672
Likes: 6
From: Nevada City California
Default

LT-1 used Holley carburetor (GM rated 800cfm, Holley listed 780cfm), L-46 used Rochester Quadraject, LT-1 used aluminum high rise intake manifold, L-46 used cast iron medium profile intake manifold.
Reply
Old Feb 25, 2006 | 12:37 AM
  #5  
ratflinger's Avatar
ratflinger
NCM Grand Opening Veteran
Supporting Lifetime Gold
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
Default

Don't believe all the BS that Chevy put out about HP numbers. GM frowned on high published HP engine numbers. The LT-1, like other high perf engines of the day, were under rated (hp wise).
Reply
Old Feb 25, 2006 | 12:53 AM
  #6  
big_G's Avatar
big_G
Le Mans Master
15 Year Member
 
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Default

I don't think the numbers are off by much....my bone stock '68 327-350 with good 60 ft. times runs low-mid 14's @99mph...seems about right.
Reply
Old Feb 25, 2006 | 11:59 AM
  #7  
70Donnybrooke's Avatar
70Donnybrooke
Pro
10 Year Member
 
Joined: Mar 2004
Posts: 640
Likes: 1
From: Mertztown Pa
Default

If I can remember correctly, that is what my 350/300 ran.
Reply
Old Feb 25, 2006 | 11:00 PM
  #8  
Coldburn's Avatar
Coldburn
Thread Starter
Instructor
10 Year Member
 
Joined: Apr 2005
Posts: 101
Likes: 0
From: Rowlett Texas
Default So what would ya do..

So what could/would you do to make more power, keeping the stock appearance?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Feb 25, 2006 | 11:56 PM
  #9  
Corz's Avatar
Corz
Team Owner
20 Year Member
 
Joined: Sep 2001
Posts: 30,958
Likes: 0
From: Middletown Connecticut
Cruise-In IV Veteran
Default

Originally Posted by audiec
The LT-1 only increased the HP by 20, from what I gather, all the same parts as the L46 except cam and solid lifters. $447 for RPO LT-1.
yeah but you're also getting a bigger hood with the LT-1
Reply
Old Feb 26, 2006 | 12:27 AM
  #10  
fotyfobravo's Avatar
fotyfobravo
Drifting
10 Year Member
 
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
Default

Originally Posted by Corz
yeah but you're also getting a bigger hood with the LT-1



That's correct...The hood was a nice looking upgrade with the LT - 1 motor. I have owned both and the LT-1 motor showed a nice difference in acceleration and torque as compared to the stock 300 hp...(1970) Today the base motor is more friendly with today's gas octane.
Reply

Get notified of new replies

To 300hp vs 350hp





All times are GMT -4. The time now is 10:11 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE