My 493.....whatcha think ?
#1548579
12/16/13 08:07 PM
12/16/13 08:07 PM
|
Joined: Jan 2008
Posts: 411 Big Island ,VA
JC Childress
OP
mopar
|
OP
mopar
Joined: Jan 2008
Posts: 411
Big Island ,VA
|
I've got a few things to work with now. 69 440 block, 4.150 stroke crank, H-beam rods, 9.5 to 1 JE pistons, 286 casting Max Wedge heads, 64 model Max Wedge crossram intake, AFB carbs, small solid roller ( probably in 250-254 @ .050 range), Max Wedge manifolds, deep pan. I'm excited to build it .....have no experience with a big block. How ya'll think it will run ?
J.C. Childress
(434) 665-9541
|
|
|
Re: My 493.....whatcha think ?
[Re: Polarapete]
#1548584
12/16/13 09:46 PM
12/16/13 09:46 PM
|
Joined: Jan 2003
Posts: 9,888 Weddington, N.C.
Streetwize
master
|
master
Joined: Jan 2003
Posts: 9,888
Weddington, N.C.
|
Run a solid or if a Hydraulic look at some of the Hughes Grinds that have about .560 lift and ~254/258 ish @.050 duration would be about perfect. The Comp XE that is 251/257 @ .050 is a good one too but I'd look at the comparable Hughes if it were mine. 108 or 110 spread in at around 105 should be perfect. It'll be a blast to drive, big torque and good power through the mid 5000 range, probably peak power around 5100-5200 but it really won't fall off too badly with the Maxie manifold and the right carb set up. The heads are probably your limiting factor but the manifold has a way of getting more out of them. I'd look for about 530hp and maybe 565-ish lb/ft pretty much flat from around 2500 to 4800. Big cubes don't really need a lot of CR (but more will make it Happier/crisper) but it will be a LOt of fun. You could put a smaller cam in it and probably grunt out close to 600 lb/ft but IMO you won't be as happy with the power curve, you almost want enough cam to take a little off the very bottom, after all you don't want it to feel like a 455 oldsmobile The maxie ram-horn manifolds really don't give away much at all to say a 1 3/4" tube header, and they look really killer under-hood....wish I had a set!!
Last edited by Streetwize; 12/16/13 09:54 PM.
|
|
|
Re: My 493.....whatcha think ?
[Re: Streetwize]
#1548585
12/17/13 12:10 PM
12/17/13 12:10 PM
|
Joined: Jan 2008
Posts: 411 Big Island ,VA
JC Childress
OP
mopar
|
OP
mopar
Joined: Jan 2008
Posts: 411
Big Island ,VA
|
I'll post dyno results after we run it but I think it will run a little better than expected.....but, the dyno doesnt lie....lol
J.C. Childress
(434) 665-9541
|
|
|
Re: My 493.....whatcha think ?
[Re: Cab_Burge]
#1548587
12/17/13 07:18 PM
12/17/13 07:18 PM
|
Joined: Jan 2008
Posts: 411 Big Island ,VA
JC Childress
OP
mopar
|
OP
mopar
Joined: Jan 2008
Posts: 411
Big Island ,VA
|
Thats almost exactly what I had in mind....based on what I've seen from stuff we've dyno'd.
J.C. Childress
(434) 665-9541
|
|
|
Re: My 493.....whatcha think ?
[Re: JohnRR]
#1548595
12/18/13 02:35 PM
12/18/13 02:35 PM
|
Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
Quote:
Quote:
but, the dyno doesnt lie....lol
Dynos lie more than you think , get it installed in a car and run it at the track , that lies less.
Oh that is so true. I loved years ago when my 400 hp Dart spanked a guys 600 plus hp Camato ! Dyno is a great place to tune the eng and get the numbers but the track tells the truth. Ron
|
|
|
Re: My 493.....whatcha think ?
[Re: 383man]
#1548596
12/18/13 03:20 PM
12/18/13 03:20 PM
|
Joined: Aug 2003
Posts: 43,285 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,285
Bend,OR USA
|
Quote:
Quote:
Quote:
but, the dyno doesnt lie....lol
Dynos lie more than you think , get it installed in a car and run it at the track , that lies less.
Oh that is so true. I loved years ago when my 400 hp Dart spanked a guys 600 plus hp Camato ! Dyno is a great place to tune the eng and get the numbers but the track tells the truth. Ron
Traction with less power can outrun more power without traction Dyno can lie, post or print false numbers, if the operator wants to jiggle the input set up to make the customer happy or make his dyno "better" than the other ones around there shop If the dyno is not calibrated correctly it will not be accurate either Lots of ways to get fooled As said at the track racing will give you the results that the motor can do in the car, all things considered
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: My 493.....whatcha think ?
[Re: 383man]
#1548597
12/18/13 03:22 PM
12/18/13 03:22 PM
|
Joined: Jan 2008
Posts: 411 Big Island ,VA
JC Childress
OP
mopar
|
OP
mopar
Joined: Jan 2008
Posts: 411
Big Island ,VA
|
Sure you can make a dyno read what you want...but why ? When you do this everyday, the dyno is just another tool in the toolbox. I know there are some hyped up dyno numbers out there but they will always be found out in the end. I know not all dynos are the same but they shouldnt be in left field if folks do things right. The dragstrip is the tell all but that also varies with track conditions, weather , etc. Weve done enough engines and folks know our dyno and our reputation......where I work is Kowalsky Racing Engines. www.kowalskyracing.com I'll post the numbers when its done....thanks for all the input from everyone.
J.C. Childress
(434) 665-9541
|
|
|
|
|