NHGuy
Captain
- Joined
- May 21, 2009
- Messages
- 3,631
Well I got it all wired & plumbed. Then put it on a run stand, I fought battery contacts with jumper cables for a while, then gave in and bought some #2 gauge cables at the parts store.
Put a shot of carb cleaner down the throat and it fired and died on the first pulse. Gave it a longer shot and it ran. It was dry of fuel before I cranked it, I am very happy at how quick the fuel arrived from the pump.
Oh how it ran. Lumpy and loud! I didn't leave it running very long though, just enough to be sure it had oil pressure and was balanced.
I'm sure it will be a little more civilized and quiet once I get it in the boat and run it using the chambered exhaust in my platform.
I've spent the off season collecting parts to dress up a short block I bought.
First thing was a trip to the machine shop to confirm that the bores were good and the parts were too.
It's a Gen+ 350 that's been bored .030 over. It already had some flat top forged TRW pistons, and an Eagle stroker crank to make it a 383 inch engine.
I clearanced the block, filed the rings for marine use, and got some large chamber Dart SS heads to make the lowest compression I could. But it still turned out a bit high at 9.8:1.
Got a thin stainless steel shim head gasket so I could get a proper quench value of .040".
There's a high lift cam, beehive valve springs, reduced travel roller lifters, and Scorpion aluminum high ratio roller rockers. The cam required me to get performance exhaust, so I got EMI Thunder aluminum manifolds and their stainless extra height risers. The cam also made it necessary to clearance the pushrod bores. That was a setback. I had to dissassemble the heads an extra time for that work.
I kept the Thunderbolt V ignition, and added a double roller timing set. Also kept the Weber 4 barrel carb from my 350 Mag. I did get a carb tune kit, so I can set things up. Also got a high volume fuel pump to keep up with the bigger engine. It's electric because the block is not drilled for a mechanical pump, so I wired it per the Mercruiser color scheme.
Now I still have to change my drive bellows and fabricate a couple of brackets for the shifter and remote oil filter. I might just blow off the oil bracket if I run out of time and do that next year.
I sure hope it gets warm soon, it's getting to be time to get on the water!
Looking forward to the summer!
I'll load couple of pictures...
Put a shot of carb cleaner down the throat and it fired and died on the first pulse. Gave it a longer shot and it ran. It was dry of fuel before I cranked it, I am very happy at how quick the fuel arrived from the pump.
Oh how it ran. Lumpy and loud! I didn't leave it running very long though, just enough to be sure it had oil pressure and was balanced.
I'm sure it will be a little more civilized and quiet once I get it in the boat and run it using the chambered exhaust in my platform.
I've spent the off season collecting parts to dress up a short block I bought.
First thing was a trip to the machine shop to confirm that the bores were good and the parts were too.
It's a Gen+ 350 that's been bored .030 over. It already had some flat top forged TRW pistons, and an Eagle stroker crank to make it a 383 inch engine.
I clearanced the block, filed the rings for marine use, and got some large chamber Dart SS heads to make the lowest compression I could. But it still turned out a bit high at 9.8:1.
Got a thin stainless steel shim head gasket so I could get a proper quench value of .040".
There's a high lift cam, beehive valve springs, reduced travel roller lifters, and Scorpion aluminum high ratio roller rockers. The cam required me to get performance exhaust, so I got EMI Thunder aluminum manifolds and their stainless extra height risers. The cam also made it necessary to clearance the pushrod bores. That was a setback. I had to dissassemble the heads an extra time for that work.
I kept the Thunderbolt V ignition, and added a double roller timing set. Also kept the Weber 4 barrel carb from my 350 Mag. I did get a carb tune kit, so I can set things up. Also got a high volume fuel pump to keep up with the bigger engine. It's electric because the block is not drilled for a mechanical pump, so I wired it per the Mercruiser color scheme.
Now I still have to change my drive bellows and fabricate a couple of brackets for the shifter and remote oil filter. I might just blow off the oil bracket if I run out of time and do that next year.
I sure hope it gets warm soon, it's getting to be time to get on the water!
Looking forward to the summer!
I'll load couple of pictures...
