what inboard engines could i put in my glastron......

57feathercraft · Jul 22, 2007

my glastron has a old tired 3.0 fourcylinder. its a 74. what other possiable engines could i put in there. whould a 4.3 6 cylinder fit in there. or a 2.2 or 2.0 four cylinder

Bondo · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

Without Major Modifications,...............

You're limited to either a 2.5l, or the 3.0l Marine motors..........

57feathercraft · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

what years? and what whould i have to do to ptu a 2.5 in there? no modifications and bolt in?

aerwin · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

alot of that depends on what brand and type of engine that boat came with. and how much do you want to spend. if you had a merc, and the stringers line up right and you wanna put a new outdrive on it, you could almost put anything you want in it, as long as it does'nt surpass the h.p rating of the hull

Bondo · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

The 2.5l Marine motors are direct drop-in replacments for the 3.0l,...
Or Vice-versa.......

And,..... With the Right Flywheel,.....
There's No issue with the different Vintages.......

57feathercraft · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

well the 3.0 is a gm which whould make it a merc. its a 140 3.0 straight four merc with a bravo one outdrive. and its a 1974. what whould i have to do to put in a 2.5.... because id rather have that than a 3.0 parts whould be alot easier to find. so i could just bolt in a 2.5

Bondo · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

If it's a 1974,...... It's NOT a Bravo,........ They didn't come out til the Late 80s.......

And,......
I believe you're confusing the 2.5l that GM has been putting in Cars,+ Trucks with the 2.5l that's used in Boats........
They are NOT the same motor..........

Don S · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

well the 3.0 is a gm which whould make it a merc.

Wrong assumption. The 3.0L is a GM engine alright, but that only makes it a GM, Mercruiser, Volvo, and OMC have all used it.

its a 140 3.0 straight four merc with a bravo one outdrive. and its a 1974

Merc has never used a Bravo drive on a 3.0L and like Bondo said the Bravo drives weren't even invented in 74. Since you assumed that is was a Merc because it was a 3.0, you are probably also wrong about it being a Merc. I think your best bet would be to post some pictures so we can see what you REALLY have there.

57feathercraft · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

in what ways are the marine engines and car engines different? i know theyre detuned and have stronger crank bearings to run at wot all the time and different type of gaskets. but it is a merc. it says merc right on the head. what tye of outdrive do you think it has? it might be just a regular bravo outdrive then?

Dakota47 · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

alpha outdrive more like it.. put a new 3.0 marine engine in it..

aerwin · Jul 22, 2007

Re: what inboard engines could i put in my glastron......

well guys the boat is a 74 but maybe the outdrive was changed, who knows really what it is, it could be a later drive, were all assuming it is a 74 drive.
just cause it says gm it isn't always a merc. all the numbers need to be referenced to find out what years they are

what inboard engines could i put in my glastron......

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