360 vs 383

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I don't understand why the B/RB platform, other than body fit, is not an advantageous platform out of the box. Wider bore spacing implies more room for valves, and the ports should be simply better I could be wrong about all of this.

You're not wrong.
 
Get a 383, find a set of TRW/SpeedPro/Sealed power dome pistons, a solid cam and valvetrain, and a Holley street dominator intake. Done!
 
Strip Dominator….

I’ll do a TF set up on my 400B and rock it!
 
Both engines have pros/cons but I think the 3k budget favours the 360. For a higher budget, I see the 383 as better. Higher budget allows more HP from HP generating parts such as alum heads, with the benefits of the BB platform: more rigid block, bore spacing, 5 bolts per cyl, steel crank, etc
 
$3K doesn't buy much beyond machining.The ideal bore stroke ratio of the 360 shines compared to the 383 with the tiny stroke and wide piston... for a stock style build.If your buying new heads, and supplying race parts then toss a coin. If you are stroking they are no longer 360 vs 383.
 
If it's more a track only build, go with the 383. Used TRW dome pistons, used solid lifter cam and ductile rockers. Try to find a block that will hone to round because stock bore pistons are cheaper. That puts machine work at a minimum while concentrating on the head options. The performer RPM is probably the best intake if you can find one used, but the street dominator is very close and provides a little more hood clearance. An Offy Port-O-Sonic is also good if you add the dams to floor as shown in the Mopar Performance engine manual.
 
Depends on what the car is set up for currently. If you have to go changing k-frame, trans/bellhousing, driveshaft, exhaust, etc., then your budget is out the window. Build whatever the car is set up for.
 
Depends on what the car is set up for currently. If you have to go changing k-frame, trans/bellhousing, driveshaft, exhaust, etc., then your budget is out the window. Build whatever the car is set up for.
Bingo! As an aside, the machine shop I use now wants an enormous price for a full rebuild. They told me it will now take 4 months and $3500 labor + I supply parts. That puts me into the crate engine cost territory. Just taking a block and heads to them to see what is needed would sting the budget before the project ever got off the ground.
 
Kind of a funny comparison.....
THIS car has a 360:

Dart blue 1.jpg


THIS one has a 383:

2 XH M.jpg


The Dart has stock 8.2 compression, exhaust manifolds, 2 1/4" exhaust, an MP 280/474 cam, Weiand intake and a Holley 600. 4.10 SG.
The Charger has 9.2 compression, headers, 2 1/4" exhaust, an MP 280/474 cam, Edelbrock Performer RPM intake and a Holley 750. 3.91 SG.
The Dart has more low end torque than the Charger. It feels quicker out of the hole but the Charger will catch up and make up for it when the rpms climb. I attribute the difference to the difference in weight and the stroke. The lighter Dart has more stroke so it gets moving faster initially. A higher stall converter and swap the gears car to car and the Charger would pull from a dig much better.
 
Kind of a funny comparison.....
THIS car has a 360:

View attachment 1715777100

THIS one has a 383:

View attachment 1715777101

The Dart has stock 8.2 compression, exhaust manifolds, 2 1/4" exhaust, an MP 280/474 cam, Weiand intake and a Holley 600. 4.10 SG.
The Charger has 9.2 compression, headers, 2 1/4" exhaust, an MP 280/474 cam, Edelbrock Performer RPM intake and a Holley 750. 3.91 SG.
The Dart has more low end torque than the Charger. It feels quicker out of the hole but the Charger will catch up and make up for it when the rpms climb. I attribute the difference to the difference in weight and the stroke. The lighter Dart has more stroke so it gets moving faster initially. A higher stall converter and swap the gears car to car and the Charger would pull from a dig much better.
I like all 4 of those vehicles !!
 
Bingo! As an aside, the machine shop I use now wants an enormous price for a full rebuild. They told me it will now take 4 months and $3500 labor + I supply parts. That puts me into the crate engine cost territory. Just taking a block and heads to them to see what is needed would sting the budget before the project ever got off the ground.

First thing I learned when I moved to Tx from Mo. IS every friggin thing costs more here that I have to buy!!!!!!!WTF!!!!?? Then when I go to sell.....NOooooooooooooooo
 
I'll take the 383 with ported HP 915 heads, 509 cam with Rhoads lifters, street dominator/750Dp and 4.57 gear.
 
I think this comparison is pretty much personal preference , I understand the benefits of the 383 but you take the longer stroke of the 360 combined with a good set of light flat tops an appropriate hydraulic roller or solid lift camshaft heck even a good hydraulic camshaft and air gap with both motors using a stock head whatever you choose I have to say advantage 360.
 
I think this comparison is pretty much personal preference , I understand the benefits of the 383 but you take the longer stroke of the 360 combined with a good set of light flat tops an appropriate hydraulic roller or solid lift camshaft heck even a good hydraulic camshaft and air gap with both motors using a stock head whatever you choose I have to say advantage 360.

Stroke is only one part of the equation the other is piston surface larger piston will have more psi pushing it down, so a 4" bore is gonna have a lot less pressure applied across the piston than a 4.25" so yes 360's 3.58" stroke is gonna have more multiplying effect than a 3.38" stroke but is gonna have less psi to multiply in the first place. It cid that matters not really how it's made for the most part when it comes to torque. Plus a 906 head gonna smoke a 1.88 valves 360 head.
 
Stroke is only one part of the equation the other is piston surface larger piston will have more psi pushing it down, so a 4" bore is gonna have a lot less pressure applied across the piston than a 4.25" so yes 360's 3.58" stroke is gonna have more multiplying effect than a 3.38" stroke but is gonna have less psi to multiply in the first place. It cid that matters not really how it's made for the most part when it comes to torque. Plus a 906 head gonna smoke a 1.88 valves 360 head.
Absolutely large bore can make torque just like stroke so 383 versus 360 that's about a wash as far as a 906 being Superior to a small Valve j okay okay but a 202 X or j will outflow a 906 so what's up now! LOL
 
a 202X won't outflow a 906
I can only go by what I remember reading I'm not claiming to have the stone tablets, if I ever move away from the 340 platform which I will add I will take over either one of those motors up to 500 plus horsepower it would be to move to the B/383or 400 but this was a budget build thread... No doubt about it 383 Rock :)
 
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