C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Big block conversion....

Thread Tools
 
Search this Thread
 
Old Jul 1, 2002 | 12:05 AM
  #1  
88'Cubka's Avatar
88'Cubka
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Dec 2001
Posts: 2,321
Likes: 0
From: Reno NV
St. Jude Donor '08
Default Big block conversion....

What does it take to put a 454 into a 74 Vette w/ 350? Anything I should know about before hand?

Thanks alot!
Reply
Old Jul 1, 2002 | 12:44 AM
  #2  
88'Cubka's Avatar
88'Cubka
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Dec 2001
Posts: 2,321
Likes: 0
From: Reno NV
St. Jude Donor '08
Default Re: Big block conversion.... (88'Cubka)

no one has swapped a big block into a c3? :D
Reply
Old Jul 1, 2002 | 12:58 AM
  #3  
Steve Straus's Avatar
Steve Straus
Safety Car
25 Year Member
 
Joined: Sep 2000
Posts: 4,679
Likes: 6
From: Charles Town WV
Default Re: Big block conversion.... (88'Cubka)

Quite a few of us have. I'd do a search on it, you'll find plenty of topics.
Reply
Old Jul 3, 2002 | 04:24 PM
  #4  
norvalwilhelm's Avatar
norvalwilhelm
Race Director
10 Year Member
 
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Default Re: Big block conversion.... (88'Cubka)

The swap itself is very easy, the accessories and pulleys can be a problem. The stock small block motor mounts, transmission and ignition work fine. Add a set of headers and the motor bolts right in. If you use a long water pump the donor engine power steering brakets and alternator mount can be used. The stock rad is marginal but you need electric fans. The mechanical fan will not work with a long pump. If you use the short pump you will have problems finding the proper pulleys and mounting brakets. No wrecking yard here. Special order, big dollar. I went the long water pump route at first then switch later to the short and made my own mounting brakets and pulleys. A very easy swap. Shane just did it, talk to him.
Reply
Old Jul 3, 2002 | 05:02 PM
  #5  
Wardog's Avatar
Wardog
Intermediate
 
Joined: Sep 2001
Posts: 44
Likes: 0
From: St. Louis MO
Default Re: Big block conversion.... (norvalwilhelm)

You also need to watch out for cooling. Put in a higher capacity radiator while you have it all out of the car. Get those little foam heat shield pieces that wedge between the firewall and the bell housing. You will be generating much more heat with that big block!
Reply
Old Jul 3, 2002 | 06:24 PM
  #6  
Steve Straus's Avatar
Steve Straus
Safety Car
25 Year Member
 
Joined: Sep 2000
Posts: 4,679
Likes: 6
From: Charles Town WV
Default Re: Big block conversion.... (norvalwilhelm)

You can get a set of March pulleys and brackets for about $700-$1000 depending on what kind and how many you need. I only have an alternator and power-nothing, so it was easy for me.

--
Steve
Reply
Old Jul 3, 2002 | 07:26 PM
  #7  
467-Ratman's Avatar
467-Ratman
Burning Brakes
 
Joined: Aug 2001
Posts: 1,002
Likes: 0
From: Bay City MI.
Default Re: Big block conversion.... (88'Cubka)

I finished my conversion the first of May, it was a lot of work, but not too bad! The results are FANTASTIC!!!! The power to weight is awesome, I have really enjoyed my car more this year than ever. If you have specific questions let us know on the forum, many people are here to help you. I guarantee after your finished you will have a perma smile!! Good luck!
Reply
Old Jul 3, 2002 | 08:27 PM
  #8  
88'Cubka's Avatar
88'Cubka
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Dec 2001
Posts: 2,321
Likes: 0
From: Reno NV
St. Jude Donor '08
Default Re: Big block conversion....

thx alot guys and if i fall into any problems, ill be sure to post thx again
Reply

Get notified of new replies

To Big block conversion....

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




All times are GMT -4. The time now is 01:11 AM.

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