View Full Version : Swap out 502 to a 454.

09-10-2012, 04:02 PM
looking for some help, I'm looking to swap my 502 to a 454 . What types of obstacles will I run into when swapping these engines . Any help would be much appreciated

09-11-2012, 05:13 PM
If they are the same gen block and no super heads with weird port spacing then just a bolt up.

I seam to remember that the early blocks had different cooling passages and head gaskets then the later.

flying tomato
09-11-2012, 06:00 PM
Whoaaaaaa!!!!!! Hold up a minute!!!!!! You can't REDUCE cubic inches???? That's going to be LESS power??????

I have never met ANYONE who said: I wish I would have gone with a smaller engine.

Just sayin,


09-11-2012, 06:03 PM
why are you doing it?
is the 454 free?
is something wrong with the 502?
don't do it, waste of time and money.

09-12-2012, 06:57 AM
unless the 454 has a supercharger on it obviously

09-12-2012, 11:07 AM
The 502 is supercharged with around 850hp , way to much horsepower for this boat . Once you get above 80 it gets squirly. I'm looking at selling the boat and using the 502 in a 29' deck boat

09-12-2012, 12:51 PM
Makes sense,prep to sell, keep the big engine

09-12-2012, 02:28 PM
using the 502 in a 29' deck boat

oh, hell yeah :eek!: :smile: