Corral

pawnman · 11-20-2009, 08:37 AM

Hey I have a 70 fastback that currently has the stock 302 in it. What will I have to change to swap in a 70 351c. Will all the accessories bolt up from the 302 to the cleveland, or will I have to find new brackets.

Jeff73Mach1 · 11-20-2009, 02:31 PM

you will need new brackets, and things such as distributor and exhaust manifolds if your new engine doesn't include those. I believe the motor mounts are the same, but while doing a swap, I would put fresh mounts on anyway.

Your transmission bellhousing will bolt right up, but if if using an automatic, I am fairly certain you need a different torque converter. If it is a manual transmission, I believe the flywheels are the same, but am not certain

Your front springs might be a little light as the 351 is about 60-70 pounds heavier fully dressed, or you could relocate the battery to the rear of the car to offset the weight gain up front.

Consider a monte carlo bar (a curved one will probably be necessary) and subframe connectors (weld in) to keep the body from getting twisted by the extra power.

62HIGHBOY393C · 11-20-2009, 05:03 PM

Quote:

Originally Posted by pawnman

Hey I have a 70 fastback that currently has the stock 302 in it. What will I have to change to swap in a 70 351c. Will all the accessories bolt up from the 302 to the cleveland, or will I have to find new brackets.

you will have to modify or find new brackets.

Kato Engineering · 11-21-2009, 01:11 AM

HEADERS...

most 302 equipped cars came with a 8 inch ford rearend housing...

.

11-20-2009, 08:37 AM	#1
pawnman Registered User Trader Feedback: (1) Join Date: May 2006 Location: Clinton, OK Posts: 28	1970 Fastback Hey I have a 70 fastback that currently has the stock 302 in it. What will I have to change to swap in a 70 351c. Will all the accessories bolt up from the 302 to the cleveland, or will I have to find new brackets.

11-21-2009, 01:11 AM	#4
Kato Engineering Registered User Trader Feedback: (0) Join Date: Oct 2003 Location: Devore Hts, Calif...FIRE COUNTRY Posts: 17,857	HEADERS... most 302 equipped cars came with a 8 inch ford rearend housing... . __________________ I have gone down the road that you are only now about to travel. tires are the great equalizer a degree wheel, EIGHT INCH dial caliper & adjustable pushrods should be just as normal as a 1/2" wrench in your toolbox there aint no shortcuts to doing it RIGHT....

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Corral

Popular

Support the Corral! Click Here:

Support the Corral! Click Here:

Remove Advertisements Sponsored Links
Corral.net Advertisement

11-20-2009, 02:31 PM	#2
Jeff73Mach1 Registered User Trader Feedback: (0) Join Date: Sep 2009 Location: Nashville, Tennessee Posts: 53	you will need new brackets, and things such as distributor and exhaust manifolds if your new engine doesn't include those. I believe the motor mounts are the same, but while doing a swap, I would put fresh mounts on anyway. Your transmission bellhousing will bolt right up, but if if using an automatic, I am fairly certain you need a different torque converter. If it is a manual transmission, I believe the flywheels are the same, but am not certain Your front springs might be a little light as the 351 is about 60-70 pounds heavier fully dressed, or you could relocate the battery to the rear of the car to offset the weight gain up front. Consider a monte carlo bar (a curved one will probably be necessary) and subframe connectors (weld in) to keep the body from getting twisted by the extra power.