thoughts on these 2 powerplants

[mattyboy]

looks like some funds will be freed up, good grades do payoff


one of these 2 will be dropped in soon as the existing motor ( I use that term loosely) is a real cluster@#ck

I have been going thru my options and these come with high recomendations from the local marina guys

the 351w would be a no brainer except for the exhaust and possible clearance issues

so the 302 is the front runner thoughts??

http://www.promarperformanceengines....ord-302-CI.asp

http://www.promarperformanceengines....ord-351-CI.asp

[gcarter]

Matty, I don't know as much about engines as some here, but you can buy "NEW" crate engines from Ford w/forged rotating assemblies for maybe similar prices. They aren't "marine" engines, but there may not be that much difference.
Also, the prices listed are list, and I know that a lot of dealers will discount significantly.
So, check this out;

http://www.fordracingparts.com/crateengine/main.asp

Click on "Small block 302 based engines"

Unfortunately, the first column is "NLA", but the third looks interesting.

[BUIZILLA]

347 roller motor..............................

[mattyboy]

I was under the impression marine engines besides all the bolt on stuff like starter ,dist,and alt. were built a little differently like extra water passages thru the heads and constructed to work under extra load????


if you order a warmed up street motor like the 347 @400 hp isn't the cam to aggressive and reversion an issue?? not to mention exhaust limitations??

I am by far no motor guy and just basically change fluids, this is just the impression I have gotten from hangin around.

so If I can order a street motor for 7k and need to order a custom CMI setup for exhaust for what 5-6k ? I am in the rip it all out and drop a scorpion stroker and a bravo neighborhood?????

the grades are good but not that good

so I think I am back to my original 2 choices

[Sweet Cheekz]

Matty
You are right the exhaust can eat you up on a lot of choices in a hurry. Based on the budget they look good but do you know anyone that has one in his/her boat?
Parnell

Forgot to look Whats the warrenty?

[mattyboy]

Parnell,

I have talked to a few car guys who know their work and a few marina guys have confirmed they do good work.

I am researching references that have their marine motors in place especially fords.


I've been tempted to try and do this myself, I have no fear about dismantling it, putting it back together is where I have no confidence in my abilities. I would over tighten something or not tighten it enough causing a leak or worse. not knowing the little in and outs of how to build a motor doing something out of order or forgeting something. I mean I always have spare parts when i build something patio furniture ,storage shelves same goes for putting together a motor right??

[BigGrizzly]

I am in the 351 camp, something like a PCM exhaust to start cheap. A 351 marine is like a truck engine.

[mattyboy]

Grizz would love to have a 350hp 351 but i don't think the osco risers will let the motor breathe the way it needs to I have a set on the 302 now.

the motor builder states it needs a performance exhaust so I think it would need hiteks or cmi

[BigGrizzly]

Actually they have center rser for them. you can do 350 with them, not much more.

[mattyboy]

a buddy just sent me this link

wonder if they can do a marine version



[media]http://www.youtube.com/watch?v=_7lWE7hRMOw&feature=related[/media]

[Conquistador_del_mar]

a buddy just sent me this link

wonder if they can do a marine version



[media]http://www.youtube.com/watch?v=_7lWE7hRMOw&feature=related[/media]

That is about the same engine as I have in my Shelby Cobra, but mine was dynoed at 489HP. They are fairly pricey, but they certainly make some great HP. Go for it - Bill

[motorcity]

[QUOTE=
Unfortunately, the first column is "NLA", but the third looks interesting.[/QUOTE]


The 3rd one is a Boss302 based engine, I would think he would have a hard time finding exhaust manifolds for this application. They would be the same as a 351 cleveland, which I would think is very rare to find manifolds for a marine application.

[gcarter]

The 3rd one is a Boss302 based engine, I would think he would have a hard time finding exhaust manifolds for this application. They would be the same as a 351 cleveland, which I would think is very rare to find manifolds for a marine application.

Oooops!

Never was a Ford expert.

[BigGrizzly]

I have a Cleveland in my Corsican exhaust are custom made. Head angle is way different. As for marinizing not an issue.--- BUT check the options. Car only guys have marine problembs with out water experience. What we find is the marine engine work better in cares then car engines in boats. Actually boat engines are better street rod engines then hp car engnes.

[Christian]

Where are you in school?

dont waste $$ on CMI they look pretty but you will pay in the long run through the nose...no matter how good your grades get...

Chris
always cheering on the underdog...donzi owner whos a student...i have been there...