Straight six, please help identify
Thread Starter
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Senior User
Joined: Sep 2008
Posts: 311
Likes: 1
From: Waterdown, Ont.
Straight six, please help identify
Hello folks,
I just bought a 1967 Mercury pickup with a straight six in it. It is not the original engine. I don't know how to tell if it's a 240 or a 300ci. What is the best way to tell? Here's a pic:
I can take more pics if needed.
Thanks for all your help!
John
I just bought a 1967 Mercury pickup with a straight six in it. It is not the original engine. I don't know how to tell if it's a 240 or a 300ci. What is the best way to tell? Here's a pic:
I can take more pics if needed.
Thanks for all your help!
John
Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
The vin will tell you the original engine.
Its a 300 or 240 you are correct.
Crank is the best way to tell. However the head casting number may give you a easier ID. Thats not guarenteed though. People through 240 heads on 300s to raise compression. You want to know................Pull the oil pan.
Its a 300 or 240 you are correct.
Crank is the best way to tell. However the head casting number may give you a easier ID. Thats not guarenteed though. People through 240 heads on 300s to raise compression. You want to know................Pull the oil pan.
Thread Starter
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Senior User
Joined: Sep 2008
Posts: 311
Likes: 1
From: Waterdown, Ont.
Thanks flipklos,
The original engine, according to the vin was a 352. At some point it was replaced with the six.
I'll see if I can find a head casting number.
When (if) I drop the pan, what am I looking for? Crankshaft id number?
Thanks,
John
The original engine, according to the vin was a 352. At some point it was replaced with the six.
I'll see if I can find a head casting number.
When (if) I drop the pan, what am I looking for? Crankshaft id number?
Thanks,
John
Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
Crankshaft ID # would be great. If I remember correctly its on one of the throws and visable. If not-3.98 is a 300 crank throw. 3.50 is a 240. A tape mesure and a buddy twisting the engine by hand will do it. Oh, discontect the coil, these engines are notoriously good starters.
