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What are the correct heads for 340HP 7.4

 
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Sugar



Joined: 27 May 2011
Posts: 1

PostPosted: Fri May 27, 2011 11:49 am    Post subject: What are the correct heads for 340HP 7.4 Reply with quote

I just purchased a new long block from a rebuilder. I noticed that the head port openings, where the intake manifold bolts up, are not of the same size as my old ones. The boat is a 1987 Sea Ray 34 Express. The engines are 7.4 , and should be 340 Horsepower. My old heads are larger than what the rebuilder supplied. Is there anyway I can determine which ones are correct? My installed referred to the new ones as peanut heads, and said I need the larger ports? HELP! Thanks, Bob
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MikeW
Senior Member


Joined: 01 May 2006
Posts: 680

PostPosted: Thu Jun 02, 2011 3:41 pm    Post subject: Reply with quote

Both will work, the bigger the ports the better the heads flow. Cool
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