- Joined
- Jan 13, 2012
- Messages
- 1,989
- Reaction score
- 8
- Location
- Washington
- My Car
- 1971 Mach1, 351 Cleveland, Ram Air (not factory), C6 Automatic, AM/8 Track, Bright Red.
The previous owner of my 71 M Code put 2V heads on rather than rebuilding the 4V closed chambered heads, apparently it was common since the 2V heads allowed the use of lower octane fuel and many believe it's improves every day driving experience by increasing low end torque.
In any case I'm putting 4V closed chambered heads back on it and was looking for a set of 4V exhaust manifolds when a friend told me he believes the car still has the 4V exhaust manifolds on it.
First question- can you use 2V heads with 4V exhaust manifolds?
Second question - can anyone tell me from this picture which exhaust manifold it has on it, 4V or 2V. Driver's side, best pic I could get without removing stuff.
Don from OMS was able to set me up with a "date correct" set of 4V closed chambered heads for my engine last year, they're out of the machine shop where I had some upgrades made and ready to be bolted on. Although the previous car owner gave me the 4V intake with the car, I'm going with a 4V Edelbrock Performer. I will soon be able to tell you guys first hand the difference between 2V and 4V heads on the same engine. I currently have the 2V Edelbrock Performer intake on the car so the only difference will be the heads.
Jim
It would help if I flipped the photo over.
In any case I'm putting 4V closed chambered heads back on it and was looking for a set of 4V exhaust manifolds when a friend told me he believes the car still has the 4V exhaust manifolds on it.
First question- can you use 2V heads with 4V exhaust manifolds?
Second question - can anyone tell me from this picture which exhaust manifold it has on it, 4V or 2V. Driver's side, best pic I could get without removing stuff.
Don from OMS was able to set me up with a "date correct" set of 4V closed chambered heads for my engine last year, they're out of the machine shop where I had some upgrades made and ready to be bolted on. Although the previous car owner gave me the 4V intake with the car, I'm going with a 4V Edelbrock Performer. I will soon be able to tell you guys first hand the difference between 2V and 4V heads on the same engine. I currently have the 2V Edelbrock Performer intake on the car so the only difference will be the heads.
Jim
It would help if I flipped the photo over.
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