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Search took 0.01 seconds. Search: Posts Made By: mmwjr

Forum: Engines

08-24-2013, 11:20 AM

Replies: 14

Mercruiser 8.1L Horizon risers and elbows

Views: 7,645

Posted By mmwjr

I believe that merc had dropped the 7.4 and was...

I believe that merc had dropped the 7.4 and was using the 8.1 when they came out with the dry joint system. With the 8.1 having redesigned heads I don't know if the manifolds will bolt to a 7.4.

Forum: Engines

08-23-2013, 02:26 PM

Replies: 14

Mercruiser 8.1L Horizon risers and elbows

Views: 7,645

Posted By mmwjr

6.2 is small block that puts out about the same...

6.2 is small block that puts out about the same HP as the 7.4, not sure about the torque. The 6.2 is also lighter so HP to weight ratio is better.

IMO a small engine that work hard to be equal to...

Forum: Engines

08-23-2013, 01:19 PM

Replies: 14

Mercruiser 8.1L Horizon risers and elbows

Views: 7,645

Posted By mmwjr

Bored and stroked. I also think GM changed the...

Bored and stroked. I also think GM changed the angle of the exhaust ports.

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