So all the marine 350 and even standard automotive engines have been neutral balanced for the last 35 years? 5000 is about as high of an rpm as I'm going to run it.
I need to talk to that Michigan motors guy again and figure out how the price went from 5k for a long block to 12k to have him throw a new carb, intake, manifolds, fresh water cooling and power steering on it.
He said 383 which doesn't show as a separate long block by itself like the 6.2 377. I think all he was doing was taking the 11,000 383 complete setup they have and added $1,000 for an aftermarket freshwater cooling kit and switching out the mercruiser manifolds for the old style u shaped ones to bolt straight up to my old style y pipe. Why aftermarket on the fwc I'm not sure.
Originally I wanted a drop in complete motor, but then we got to talking on here and you were saying I can just have a 383 built to my liking for a fraction of the price. That's when I mentioned the quench style pistons and then being able to balance it internally. Honestly I know they just use the full dished pistons across all their engines for cost savings and to prevent confusion, however I'm still not quite sure about a couple things though.
1. Do the full dished pistons affect the lifespan of the engine?
2. Same with the factory neutral balance, If I keep it 5000 rpm and below, will the factory neutral balance and factory dished pistons still allow me to get 2-3000hrs on the motor?
3. I know you said the 14'' flywheel won't fit in the PDS flywheel housing, but what about the 12-3/4" flywheel? Will that original 30 year old flywheel bolt right up to the 383 crank of a crate motor or do I have to buy a special custom flywheel? I've heard the bolt pattern is different.
I was going to have my existing 5.7 block made into a 383, then you said you have to convert it to roller lifters and it sounded it really wasn't made for it to begin with.
I'm on the fence between getting a brand new GM350 block with vortec heads built by that shops machine shop to turn it into a 383 stroker with around 350hp and 425ft lbs of torque and then have the boat repair place add on the tin and accessories.
Or if you say the neutral balanced engine and full dished pistons will still give me long life then I'll go with this 6.2 liter 377 stroker rated at 340hp and 425 ft lb of torque and just have the boat shop add on the manifolds, new power steering pump, etc. It looks like it's already setup for marine use. I haven't really seen a 383 by itself that is setup for marine use though. GM does make a HT383 which I believe is brand new, but they say not for marine use.
This is going to go in a 6000 lb boat and I just want to get a little more power and speed out of it then it has now with the factory 275hp engine. It will do about 38-40mph right now, i'm hoping with a higher torque engine I can get it to 48-50mph. I won't be running around full throttle all day long with it, but would like to occasionally when the conditions permit. Most time will be spent around 3500rpm 30mph that's how I run the boat now. I don't beat on my stuff, but I like to have good power when I need it.
Thanks for all your knowledgeable help here, you've taught me a lot so far. Sorry if it seems like i'm changing my mind up going back and forth, i'm learning as I go here. I hope this gives you a clear direction of where I want to head.
|Chevrolet 262-400 CID|
XTREME MARINE Retro Fit Hydraulic Roller
Note: " K" Indicates Cam & Lifter Kit Part Number