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

306 in c3?

Thread Tools
 
Search this Thread
 
Old Aug 20, 2013 | 10:51 AM
  #1  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default 306 in c3?

My friend is selling is fully built roller 306 engine. its in a manual so my questions are this

Will it work in an automatic?

What parts would i need?

Also can a 306 be put in a c3 corvette easily?

What parts would I need to make it fit?

Thanks as I know nothing about engine mounts and if engines can be interchangeable from auto to manual
Reply
Old Aug 20, 2013 | 10:54 AM
  #2  
TedH's Avatar
TedH
Le Mans Master
Supporting Lifetime
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Default

Originally Posted by Planbmatt1
My friend is selling is fully built roller 306 engine. its in a manual so my questions are this

Will it work in an automatic?

What parts would i need?

Also can a 306 be put in a c3 corvette easily?

What parts would I need to make it fit?

Thanks as I know nothing about engine mounts and if engines can be interchangeable from auto to manual
Do you mean a 305? 307? Same exterior dimensions as a 350 so all mounts and transmission will line up. No issue that it is from a car with manual trans as automatic trans mounting does not affect the engine. I think 305/307 are internally balanced like 327 and 350 so the auto trans flex plate for the transmission should be fine.
Reply
Old Aug 20, 2013 | 11:00 AM
  #3  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

Sweet! He Is in my car group so he is gonna sell it for literally the price of an aluminum head
Reply
Old Aug 20, 2013 | 11:07 AM
  #4  
CaseyJones's Avatar
CaseyJones
Melting Slicks
 
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
Default

Well, it depends on what engine it is based on and the bore/stroke ratio. If it is an overbored 302 then it will be peaky without the low end torque that a heavy C3 needs to get moving unless you change the rear end ratio to something lower, like a 3.73 or a 4.11. That sucker will buzz at 60 MPH. You need more details before you pull the trigger on that one. It could easily be a dog around town but a killer engine on the freeway.
Reply
Old Aug 20, 2013 | 11:21 AM
  #5  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

I asked him all the details ill get back to you guys
Reply
Old Aug 20, 2013 | 11:34 AM
  #6  
63mako's Avatar
63mako
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Default

406?? never heard of a 306.
Reply
Old Aug 20, 2013 | 11:54 AM
  #7  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

Yea I know but he says its a 306. I asked him
What it is based off
Compression
Bore
Stroke
Cam
Heads
Carb
Reply
Old Aug 20, 2013 | 11:56 AM
  #8  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

There Is a 306 sbc though so
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 Aug 20, 2013 | 12:23 PM
  #9  
bashcraft's Avatar
bashcraft
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
 
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Default

Originally Posted by Planbmatt1
There Is a 306 sbc though so
No there isn't, and if he's telling you this, he's full of $hit.
Reply
Old Aug 20, 2013 | 12:26 PM
  #10  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

Nvm its a 306 ford. Came out of a foxbody mustang and is built to roller. Will it work?
Reply
Old Aug 20, 2013 | 12:29 PM
  #11  
bashcraft's Avatar
bashcraft
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
 
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Default

Originally Posted by Planbmatt1
Nvm its a 306 ford. Came out of a foxbody mustang and is built to roller. Will it work?
No.
Reply
Old Aug 20, 2013 | 12:32 PM
  #12  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

Bummer thanks for the help guys.
Reply
Old Aug 20, 2013 | 01:21 PM
  #13  
MrJlr's Avatar
MrJlr
Race Director
15 Year Member
 
Joined: Feb 2006
Posts: 12,239
Likes: 19
From: Chino CA
Default

Almost any engine can be "made to work".....
But that sounds like more trouble than you need.


Reply
Old Aug 20, 2013 | 01:25 PM
  #14  
scottyp99's Avatar
scottyp99
Le Mans Master
15 Year Member
 
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Default

Originally Posted by Planbmatt1
Nvm its a 306 ford. Came out of a foxbody mustang and is built to roller. Will it work?
Sure, you can make anything work, if you throw enough money at it. Would it be worth it? Absolutely not. Stick with a small block chevy if you want to minimize expensive headaches and hassles.

If this guy is trying to sell you a Ford Windsor engine to put in your 'vette, he may be having a little fun at your expense.

Scott
Reply
Old Aug 20, 2013 | 01:40 PM
  #15  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

Lol yea i passed the offer up.

I have a performance shop in joplin called Sho me Speed who is working on a quote for me right now for two things

Nitrous kit install. I can pick up a full kit that was on a c3 corvette for $150, ( bottle warmer, bottle opener, wot switch, window switch, etc)

Top end kit install on l48
Reply
Old Aug 20, 2013 | 07:03 PM
  #16  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

He also has a fully built tranny for it. So if it came with a 5 speed could it hook up to my driveshaft easily and I would just need motor mounts?
Reply
Old Aug 20, 2013 | 07:51 PM
  #17  
jotto's Avatar
jotto
Melting Slicks
15 Year Member
 
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
Default

Originally Posted by Planbmatt1
He also has a fully built tranny for it. So if it came with a 5 speed could it hook up to my driveshaft easily and I would just need motor mounts?
Easy if you have very deep pockets and excellent fabrication skills.

Way too much work and money IMHO. Walk away.....
Reply

Get notified of new replies

To 306 in c3?

Old Aug 20, 2013 | 07:59 PM
  #18  
Planbmatt1's Avatar
Planbmatt1
Thread Starter
Racer
 
Joined: Apr 2013
Posts: 366
Likes: 0
Default

Gotcha. Ill stick to throwing a bottle on It.
Reply
Old Aug 20, 2013 | 08:02 PM
  #19  
Indiancreek's Avatar
Indiancreek
Drifting
Supporting Member
15 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
Default

Someone mentioned the .030 over boref 302. That would be around there. A 4.030 bore and a 3 inch stroke. Came in the Z28. Sound great and rpm very high. However, you'll need to keep it around the 4,500 rpm range to have power. The Zs ran well but all at top end. If you ran an auto you'll need a big number stall converter.
In a C3 it would be a dog from the sit still, unless you really gear it. Like someone said 4.11 or maybe a 4.56.
If you got it cheap enough, it may be fun to play with for a while. As a driver, I think it would get old before to long.
Reply
Old Aug 21, 2013 | 06:48 AM
  #20  
bashcraft's Avatar
bashcraft
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
 
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Default

Originally Posted by Indiancreek
Someone mentioned the .030 over boref 302. That would be around there. A 4.030 bore and a 3 inch stroke. Came in the Z28. Sound great and rpm very high. However, you'll need to keep it around the 4,500 rpm range to have power. The Zs ran well but all at top end. If you ran an auto you'll need a big number stall converter.
In a C3 it would be a dog from the sit still, unless you really gear it. Like someone said 4.11 or maybe a 4.56.
If you got it cheap enough, it may be fun to play with for a while. As a driver, I think it would get old before to long.
Why would someone put a Ford engine in a C3?
Reply



All times are GMT -4. The time now is 04:32 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