i can get it for 700 dollars acording to the seller it makes 420 horses

Casting numbers are as follows: Block= 14015 Heads= 8272990
It's a Mercury Marine (Mercruiser) take out.

this is what the ad says

for sale/trade BBC 454/420hp, carb to pan. In heated storage past 10 years.
Was a marine take-out. Rect. port heads,4-bolt mains, HD rods, roller rockers
what changes would i need to make to make it fit my 71 chevelle
and is it worth the price?

Looks ok to me esp if it runs well for that price and you can use as is with 420hp which is pretty good as is or re-cam with better inatake if you want too.

Was it a salt water or fresh water boat/motor,salt can really chew/corrode the block.

May not have provision for mech fuel pump,will need an elec pump.

May need to change oil pan too.

Also,find out if its a reverse rotation motor which a few boats have,in that case i believe a cam change and possibly distributor or at least the dist gear is all thats needed to go back to std rotation required for a car but i am not 100% sure on that.

scott

Salt water and reverse rotation are what you need to look out for. Might want to check the condition of the bearings too. These engines are always under load, unlike a car that is almost coasting when cruising on the level. A friend has one of these in a tube chassis '32 Ford truck and it works fine.

it is salt water
about the rotation i just email the seller to see if he knows
would it be corroted in the inside because of the salt water or just outside?

Depends if the water jackets were cooled directly w/ salt water or it went through a heat exchanger and cooled regular water that then cooled the engine??

Direct cooled, possibly corroded bad?, indirect, shouldn't be.

pdq67

If it's a salt water cooled and been sitting for 10 years.........RUN AWAY now!

wao too complicated

i will take that advise and RUN like no tomorrow:yes:

Check for bent rods too, marine engines do hydrolock from time to time.

Check for bent rods too, marine engines do hydrolock from time to time.

Oh yes!!!!!!!!!!!!
Personal experience!!!!!!!!
Got water in #6 cyl in the jet boat a few years ago. Bent the rod and snapped the skirt off the piston. :(

Oh yes!!!!!!!!!!!!
Personal experience!!!!!!!!
Got water in #6 cyl in the jet boat a few years ago. Bent the rod and snapped the skirt off the piston. :(

wet headers are great until they flood a cylinder and carnage ensues...