Performance V8 Engine Parts

[smokeonthewater]

500 hp in a 4 cyl merc in a boat?

UH I don't think so Tim.... Unless ur planning on a supercharger

Now 500 hp from a ford 460 big block V8 then yeah but not a merc 470

[spareparts]

Ferm, the last few things I got from Summit were within a couple dollars of Jegs, and Jegs web site sucks, Summits site is one of ht easiest places to look up parts. I'll find what I want on Summit, then check the part number elsewhere to see if I can beat it. KMJ has had some real good deals lately. I've got a set of their rods in my 383 for the buggy

[spareparts]

AUsie said 500 from a 460, so I think he's thinking 250 hp from the 3.7. personally I think you're over doing it. 4bbl carb,altenator conversion, better valve train, reground cam, aftermarket head, pertronix ignition, and a good solid bottom end should be good for around 200-225 hp easily. Mercruiser had the engine rated at 190 at one time. Looking at what fails the most on these engine under normal use. The valve train and head gaskets seem to be the biggest issue. I would definitely get cam bearings installed in the block so you'll have better oil pressure.

[aussie]

yeah ill be getting 600hp out of me 3.7 at half throttle ---what I was saying that 250 hp out of a 3.7 is achievable but im not looking at those figures --if the rate a a 190hp in stock form with that boat anchor head on it I cant see why 250hp would be hard--Anyway got some emails from Eagle and I guy Alan is willing to go out of his way to help and asked me the wait of the rods so im of to the machine shop to weigh them-I want my engine to be able to sit on 5500rpm all day

[step up here]

Do you plan on putting this dream motor on a dyno to see how much power you have?

[spareparts]

you need to keep the rpm below 6000(5500 even better), neither the out drive or the timing chain will hold up to high rpm. There was a guy in Atlanta that took one of those motors and ran it in a NHRA econo/ rail car. One of the first things he did was eliminate the cam chain and went to a gear to gear drive

[aussie]

it wont be going past 5500 rpm it will have a rev limiter and the gear set will be a ford crank gear and a chev camshaft gear that's if I can find a chain to fit it ..I do have access to a engine dyno but maybe my mate wont want this piece of **** in his shop. I don't think he has got 460 pipes to put on it ---Might just ask him just for all the Critics on here it might be lucky to make the 190hp at the flywheel . Im sure Mercs figures weren't too correct . The only thing I don't like on engine dynos the engine gets worked too hard before it is broken in I always nursed my new engine for 600 miles till the first oil change maybe there someone who can do it from the prop This year would have to be one of the worst years with disagreement's with friends and family wtf is going on ..... I must be loosing my mind cant be all theses people being wrong it must be me-----When others do the wrong thing I try and not get hot headed about it ---most times but if I do the wrong thing they want to crucifie me---Been having big **** fights with the wife and the inlaws and now it looks like the wife has teamed up with her *** of a mother---seriously I don't think this boat will ever get finished every time I attempt to move forward with it all hell breaks loose in the family..... Just don't know what way to go with her she makes me feel all alone with her remarks something surely needs to change even the kids always seem to side with mum as its the easy way for them---yeah that's it I have a family and I feel all alone how does that make sense how many times can I put up with this

[aussie]

Originally Posted by spareparts

you need to keep the rpm below 6000(5500 even better), neither the out drive or the timing chain will hold up to high rpm. There was a guy in Atlanta that took one of those motors and ran it in a NHRA econo/ rail car. One of the first things he did was eliminate the cam chain and went to a gear to gear drive

I have seen a lot on the sites you referred me too and I don't think it would be possible to turn my engine to 6500rpm its one big 4cyl its the torque of the engine im looking at more air more fuel and more compression gives more twisting affect on internals ---im not looking for high rpms im looking at making good figures at 5500rpm making power at 6500rpm will mean I will loose a lot of idle quality and low end torque not what I want in a fishing boat. this is why I have said im going solid in the cam grind it will not cost me any extra as I had to buy all the gear for the head the solid cam will give me a wider and longer torque rang and if the edelbrock head could run stock rocker gear I would of left it stock . yes I do need to start some action and get this boat in the water to see if it is as good as I thought

[aussie]

Originally Posted by step up here

Do you plan on putting this dream motor on a dyno to see how much power you have?

http://www.youtube.com/watch?v=79YCWgG7E6A