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Re: anyone running a 350 with 2.1 box?

Posted: Sat Jun 01, 2019 3:08 pm
by Slidin Gator
So the argument for killing the torque myth is the perfect torque curve? I guess it's just arguing for the sake of making noise.

I'm just gonna scratch the Ecotec of my list of future engines. There are many factors to consider when buying, #1 in this case is the salesman.

Re: anyone running a 350 with 2.1 box?

Posted: Sat Jun 01, 2019 3:49 pm
by OneBFC
I am sure the ecotec sales person will or would be devastated? LS engine comparison is far and away even more obvious which is better from a performance perspective.

I am not selling anything but knowledge.

Use it how you wish. Not meant any other way.

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 3:30 pm
by br,lc,LA
Torque is nothing but cylinder pressure x cylinder area x crank lobe offset

It is absolutely useless number w/o rpm being involved and torque x rpm = HP

If you want to run your engine at high torque which equals high cylinder pressure and lug the motor all the time... by all means let it blow!

That's my $0.02

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 7:11 pm
by SWAMPHUNTER45
Torque equals usable power, horsepower is great...luv it... but... don't need the noise and don't like to wait for my snap!

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 8:02 pm
by kwanjangnihm
Image

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 8:08 pm
by Keeth1123
kwanjangnihm wrote:Image

Always make me laugh with these memes

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 9:08 pm
by Deano
Image

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 10:02 pm
by Slidin Gator
Deano wrote:Image
:lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
About busted a gut on that one :thumbleft:

I guess no one else has any actual useful input for Keeth? Consensus is get another 350 motor with a 2:1 for cheap and get on with it?

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 10:22 pm
by OneBFC
Consensus is get another 350 motor with a 2:1 for cheap and get on with it?
Yep, I agree. No messing with rigging or any other cans of worms when you go changing stuff.

Done and back to sliding.

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 10:51 pm
by SWAMPHUNTER45
I would be looking for a 383 or 400 since they make more TORQUE!

Re: anyone running a 350 with 2.1 box?

Posted: Mon Jun 03, 2019 11:09 pm
by Slidin Gator
See Keeth, consensus is to gear that 350 and turn it. Sure, you gotta change all the rigging to turn a bigger prop (gotta buy that after all), move the motor stand forward to make room for the belt drive. Probably change the seating and rigging to make room for the engine, now moved forward. Yep, throw some gear at the problem and make some damn Hp! Hp is free and all.

Wait, my right hand man is talking, damn Torque Devil. What's that Swamp, uh, I mean Devil?
SWAMPHUNTER45 wrote:I would be looking for a 383 or 400 since they make more TORQUE!
Keeth, Unbelievable as it sounds, there is another option. It turns out for a bit more money vs. a stock reman you can build a 383 stroker and wake your rig right up! Seriously, Keeth can keep all your stuff the same, just rebuild the bottom end with a stroker package and find some throw away 305 heads to make compression? Turns out that this will make more Torque and I now understand that higher torque at 2,850 RPM actually equals increased Hp! What a trip, I learn something new every day :violent1:

Keeth, time to pick a team, :stirpot:

Just like Smokey the Bear said about preventing Forest fires:

Image

Re: anyone running a 350 with 2.1 box?

Posted: Tue Jun 04, 2019 6:21 pm
by SWAMPHUNTER45
I have seen a 13ft glass boat running around with a junk yard sbc take out that ran very well.

1973 Chevy 400 with a 2 barrel Rochester carburetor, it came out of a 4 dr Caprice Classic. Had long tube headers and a HEI upgrade with good curve.

Ran dry with 2 adults like it was no trouble at all

Re: anyone running a 350 with 2.1 box?

Posted: Tue Jun 04, 2019 7:13 pm
by Keeth1123
Well I currently run a 400 with a belt box. Does really well for me. I only started this thread because I had to do some fixing. Had to replace the head gaskets because I think the steam holes worked one loose.

. Put in some high dollar gaskets, aluminum locking rockers, new rods and lifters. Running great again. I just like to read the posts lol

Re: anyone running a 350 with 2.1 box?

Posted: Tue Jun 04, 2019 8:15 pm
by SWAMPHUNTER45
They don't like a lot of rpm but they are a great engine

Re: anyone running a 350 with 2.1 box?

Posted: Wed Jun 05, 2019 7:53 am
by flcracker9
kwanjangnihm wrote:
OneBFC wrote: 500lbft/ 400hp turns way way less prop and makes way less thrust than 400lbft/500hp
according to my AC pocket protected fuzzy math excel calculator the engines have equal power and both exceed waterthunder thrust expectations :salute:

I challenge any CM calculators to prove me wrong!!

:stirpot: :fishing :stirpot: :fishing :stirpot: :fishing :stirpot: :fishing

thrust.PNG
Looks like we may have attended the same schools :lol:

Re: anyone running a 350 with 2.1 box?

Posted: Wed Jun 05, 2019 8:04 am
by flcracker9
Birddog247 on this site runs an old 350 that he pulled from a van, 2:1 gearbox, 2 blade R, on an aluminum hull, and I've yet to see him sruggle on the hill with 2-3 people. The belt box in question weighs more than his gear box, but the combo operates the same. Set-up would dictate how it performs, but the generic question was "anyone running a 350 with a 2:1 box", and I'm sure there are plenty of boats running that combination. Set up right, it can be a point and go combo.

Re: anyone running a 350 with 2.1 box?

Posted: Wed Jun 05, 2019 8:38 am
by digginfool
flcracker9 wrote:Birddog247 on this site runs an old 350 that he pulled from a van, 2:1 gearbox, 2 blade R, on an aluminum hull, and I've yet to see him sruggle on the hill with 2-3 people. The belt box in question weighs more than his gear box, but the combo operates the same. Set-up would dictate how it performs, but the generic question was "anyone running a 350 with a 2:1 box", and I'm sure there are plenty of boats running that combination. Set up right, it can be a point and go combo.
Not only does Pat run it, Spencer does, too (I believe his ratio is actually 2.09:1 but close enough), although he's got a 5.3 he's mulling over replacing the 350 with.

Re: anyone running a 350 with 2.1 box?

Posted: Wed Jun 05, 2019 8:40 am
by kwanjangnihm
always worth repeating on the weights of gearboxes

CH3 Belt Box
Upper Unit----60lbs
Lower Unit with bearing----23 lbs
Main Housing-------42lbs
All bolts and belt----7lbs
Total---------132lbs

Rotator Gear Box 70lbs

:salute: