Engine swap - Impala Tech
General Tech For best results use forums below.

LinkBack Thread Tools
post #1 of 4 (permalink) Old 10-01-2019, 10:08 PM Thread Starter
Join Date: Oct 2019
Posts: 3
Engine swap

I have a 350 in this 66 that i would like to swap with a v6 vortec can this be done
Almaraz is offline  
Sponsored Links
post #2 of 4 (permalink) Old 10-01-2019, 11:38 PM
Join Date: Jan 2006
Posts: 12,929
Yes it can. Why?

Big Dave
Big Dave is offline  
post #3 of 4 (permalink) Old 10-02-2019, 08:12 AM
Senior Member
Join Date: Jan 2018
Location: Greenville, SC
Posts: 394
If it's the 4.3l V-6, it is literally a 350 sans two cylinders. The V6 is going to have to work that much harder to move that big car around, so if you're looking for fuel economy you probably won't see an improvement. Keep the 350 and look at an OD transmission. If you're just looking for less power, you're going in the right direction.

1968 Impala SS
496 Stroker
T56 Conversion
3.73 Posi-Trac
68WASAGOODYEAR is offline  
post #4 of 4 (permalink) Old 10-02-2019, 09:40 AM
Join Date: Jan 2006
Posts: 12,929
Well the 153 cube four cylinder "Iron Duke" that powers Ag water wells and fork lift trucks as well as the refrigeration unit slung under Semi trailers bolts right up as well.

GM used engines bigger than 400 cubes only in the their full size cars all other cars in GM's fleet were restricted to 400 cube or smaller.

This is why Caddy had a 500 cube motor, while Buick, Olds, and Pontiac had the 455. Chevy at the time was still running a 427 in full size cars up to 1970 when the 454 was introduced to move the heavy full size Chevy.

I used to work on a fleet of twelve Biscaynes powered by the Iron Duke four cylinder. The cars had no radio, and no heater bench seat and manual three speed tranny. These cars were purchased by the water department of the city of Tampa. These cars had a hard time exceeding 42 mph.

Big Dave
Big Dave is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome