answersLogoWhite

0


Best Answer

Yes, the 350,400,or 455 will out weigh the 301 by about 200lbs, so the front end will sag under the additional weight. Depending on the year of the motor you are swapping in you may be able to use the stock mounts. 1970-1979 Pontiac V8s had five bolt bosses per side and will bolt up to the 301 mounts. Pre '70 only had two bolts per side making a mount swap nessary.

User Avatar

Wiki User

15y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Do the front springs and motor mounts need to be replaced when replacing a Pontiac 301 engine with a Pontiac 350 or 400 or 455 engine for a 1979 firebird espirit?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Replace a 1981 firebird espirit fuel line?

If the fuel line is the metal line and bent then it needs to be replaced with an exact replacement to fit properly. If its the rubber line then the line can be bought by the foot at a local auto parts.


How much torque did the 1973 Pontiac firebird espirit have?

Check the engine code in the VIN. It is the letter in the 5th position from the left. M - 350 cu. in. 150 hp N - 350 cu. in. 175 hp R - 400 cu. in. 170 hp S - 400 cu. in. 200 hp T - 400 cu. in. 230 hp


What is done on the site Espirit online?

Espirit is a well known clothing manufacturer. On the Espirit webpage is a variety of items for sale including clothing for men, women, children, and infants.


Where would one purchase an Esprit blouse?

Espirit blouses are available online from the Espirit website as well as Amazon. Additionally, the clothing store Anthropologie carries Espirit blouses both online and in their retail locations.


How do you pronounce espirit?

es-pree


What is the primary purpose for dining-in for the USAF?

For morale and espirit de corps


What type of products can one purchase from Espiritshop?

There are many products that one could purchase from the store Espirit Shop. Most of the things that one could purchase from the Espirit Shop would include clothing.


How fast does a lotus esprit go?

I love the lotuses! :DI am not aware of how fast the espirit is, probably because it isn't out yet, but one can find out at (lotuscars.com/en/lotus-espirit) minus the parentheses of course.


What is espirit de'corps?

Another word for it is: morale--the ability of a group to pull together in difficult times or situations.


What is the meaning of au nom du pere du fils et du saint espirit?

in the name of the father, the son and the holy spirit


Does the Espirit EC-10 Treadmill give each buyer a warranty replacement option?

No, it comes with a standard 5 year warranty on the treadmill.


Is espirit de corps in Latin?

Taking a guess from the dark recesses of my mind, the phrase ""espirit de corps"" seems to be Latin in some form or another. However, the specific dialect of Spanish, Latin, Portuguese, and/or any other Spanish dialect. Based upon my search for the phrase, the results I received proves my guess to be wrong. The language origination of the phrase is French.