what year range of intakes can I use

[PowerAddict]

I have a 73 140 mercruiser. what years can I get an intake from?

 

[PowerAddict]

Re: what year range of intakes can I use

Ttt

 

[Dante04SRT]

Re: what year range of intakes can I use

I've been in a similar 'boat' lately.

Here's what I've found; Its not really the year range, so much as it is the matching of intake ports... There were a few diff sizes/shapes.

Here is a pic of the head ports for comparrison:

 

[PowerAddict]

Re: what year range of intakes can I use

so there's only 3 different types of head ports? What about the throttle linkage bracket bolts?

 

[Dante04SRT]

Re: what year range of intakes can I use

I didn't say it was a perfect guide, just something to help you out.

 

[Don S]

Re: what year range of intakes can I use

Get the right one for your engine. While you might bolt on a different one, you will probably have problems with riser and pipe alignment, linkage, hose hook ups and who knows what else.

 

[Bondo]

Re: what year range of intakes can I use

Ayuh,........

The Manifold with the bolt holes Exactly where they Ought to be is the Most Important part.............

Any of those heads will Run with a Manifold that doesn't exactly match the head ports.........

Your's should be a Mod.1, with the square looking riser that goes Straight aft,........
Right,..??..??.....

The later models are the Alphas with the rounded looking riser coming off to the portside,+ aft........