The 350 / 5.7 has long been one of several mainstays for power boating, but true marine blocks have a different metallurgic content and are more resistant to corrosion than standard automotive / truck engine blocks. And if I'm not mistaken, most have different-spec camshaft and rotating assembly better suited to constant rpm. This is why it's not advisable to put a boat or forklift engine in a road-going vehicle. They're set up for constant rpm, not up-and-down.
I put a 307 out of a 73 Chevelle in my Bay liner capri. I used the cam and lifters and the heads from a 350 out of another boat that was freeze cracked all over the block. Just above the oil pan gasket and just below the head gaskets were all blown out from freezing and not being properly drained. I sent the heads out to be pressure tested and planed and they were fine. It works mint. The original motor in my boat was a 2.3 liter Ford motor. Basically the same thing as a Pinto motor.
I currently have vortec heads on my 97’ Mercruiser 350 . There aren’t as much differences between car and boat engines as you think. The exhaust maniflolds on an Alpha one is water jacketed, so water can’t get into the motor that way unless they are cracked. So a little bigger cam than stock wouldn’t hurt anything. Also Alpha ones are good to about 300 hp, after that your pushing your luck. Head gaskets and intake gaskets are different than street stuff. Mercruiser sells carbureted intakes for vortec heads, pricey tho. Boat stuff is mostly safety related . Fuel pump with vent line to the carb, J tube on the carb. Spark arrestor, etc. you could run that engine you have, just gotta be mindful of a few things, and don’t hot rod it too much with that alpha one. Oh, and Mercruiser engines with stern drives have flywheels not flex plates.
@@nylegreen261 I have similar interests. Right now I have an old Chevy 350 that I don't know what to do with yet, maybe I'll put it on my Sears Craftsmen lawn tractor. Lol.
Usually has to do with reversion because of the cam. It could possibly suck water in the cylinder with water manifolds . With dry headers or manifolds no problem.
@nylegreen261 This Is The Correct Answer!!! The Cam Can't Have Too Much Overlap With A Wet Exaust System!!! It Will Suck Water Into The Cylinder!!! Crazy I Know But True!!! No Worries Just Get A Cam Made For Marine Use!!! I'm Sure Comp Will Have The Proper Cam For You!!! Good Luck!!!
@patrickm.8425 How's ii going pat. Mustang will be my main car. I should have it out before the end of the year. With the mystery engine I'm thinking a head test.
The cam and heads are different for the marine use. A car cam makes power at different rpms. At least change the cam. There something different with the heads as well. He also says the marine 350 isn't a 350. It's closer to a 383. The 350 is too weak from a car.
They're not sturdy enough to pass a dock test. Putting one in your drag boat or short-pull river ski boat is fine. Never ever ever would consider it for any water big enough to lose sight of the shore.
When a manufacturer says something like that, I think it would be unwise and stupid to disregard their comments and go against their advice. It is a free country. You are free to do dumb things.
The 350 / 5.7 has long been one of several mainstays for power boating, but true marine blocks have a different metallurgic content and are more resistant to corrosion than standard automotive / truck engine blocks. And if I'm not mistaken, most have different-spec camshaft and rotating assembly better suited to constant rpm. This is why it's not advisable to put a boat or forklift engine in a road-going vehicle. They're set up for constant rpm, not up-and-down.
Glad to see some videos from you again. Always enjoy them
I put a 307 out of a 73 Chevelle in my Bay liner capri. I used the cam and lifters and the heads from a 350 out of another boat that was freeze cracked all over the block. Just above the oil pan gasket and just below the head gaskets were all blown out from freezing and not being properly drained. I sent the heads out to be pressure tested and planed and they were fine. It works mint. The original motor in my boat was a 2.3 liter Ford motor. Basically the same thing as a Pinto motor.
I believe the block will clean up very well 😊
If not let me know and I by it off you for my 1885 z28 for my Drag car
@JohnboyDawson Nice I hope so.
I currently have vortec heads on my 97’ Mercruiser 350 . There aren’t as much differences between car and boat engines as you think. The exhaust maniflolds on an Alpha one is water jacketed, so water can’t get into the motor that way unless they are cracked. So a little bigger cam than stock wouldn’t hurt anything. Also Alpha ones are good to about 300 hp, after that your pushing your luck. Head gaskets and intake gaskets are different than street stuff. Mercruiser sells carbureted intakes for vortec heads, pricey tho. Boat stuff is mostly safety related . Fuel pump with vent line to the carb, J tube on the carb. Spark arrestor, etc. you could run that engine you have, just gotta be mindful of a few things, and don’t hot rod it too much with that alpha one. Oh, and Mercruiser engines with stern drives have flywheels not flex plates.
Love your videos keep them coming
@dzperformance7360 Nice thank you
I'd like to follow along with what you're doing , maybe I can learn something.
So, I subscribed.
Nice thank you
@@nylegreen261
I have similar interests. Right now I have an old Chevy 350 that I don't know what to do with yet, maybe I'll put it on my Sears Craftsmen lawn tractor. Lol.
Usually has to do with reversion because of the cam. It could possibly suck water in the cylinder with water manifolds . With dry headers or manifolds no problem.
@@twopopsaqullu9721 Gothca thank you
@@nylegreen261 your welcome and thank you for the videos. I really like your testing with the nova
@nylegreen261 This Is The Correct Answer!!! The Cam Can't Have Too Much Overlap With A Wet Exaust System!!! It Will Suck Water Into The Cylinder!!! Crazy I Know But True!!! No Worries Just Get A Cam Made For Marine Use!!! I'm Sure Comp Will Have The Proper Cam For You!!!
Good Luck!!!
They want a marine cam in it thats going to make all its power down low since a lot of boats dont rev over 4500
@@jdm4569 Thank you
There is brass liner on water ports of edelbrock marine intake, very pricy, not sure if factory has liner also
@jacobnorth8642 Nice thanks for the information.
Oh, and the heads are not smog heads on the marine engine.
What happened to the mystery small block and the new car?
@patrickm.8425 How's ii going pat. Mustang will be my main car. I should have it out before the end of the year. With the mystery engine I'm thinking a head test.
And the water pump has to be for marine use as well.
@GrandPitoVic Sounds good I will reuse original.
That 330 horse may not be but the cam is going to make power in the wrong powerband. I'd at least get a new marine cam for it
The cam and heads are different for the marine use. A car cam makes power at different rpms. At least change the cam. There something different with the heads as well. He also says the marine 350 isn't a 350. It's closer to a 383. The 350 is too weak from a car.
They're not sturdy enough to pass a dock test.
Putting one in your drag boat or short-pull river ski boat is fine. Never ever ever would consider it for any water big enough to lose sight of the shore.
@@camojoe83 LoL nice
When a manufacturer says something like that, I think it would be unwise and stupid to disregard their comments and go against their advice. It is a free country. You are free to do dumb things.