B1 MC heads for a 500" RB
#2147713
09/05/16 12:54 AM
09/05/16 12:54 AM
|
Joined: Oct 2009
Posts: 248 near St Petersburg, FL
Lifsgrt
OP
enthusiast
|
OP
enthusiast
Joined: Oct 2009
Posts: 248
near St Petersburg, FL
|
I need some help determining if I can run B1 MC heads on a factory 440 block with a 4.375 or less bore (currently 4.350). Other than shrouding, any issues with interference with the 2.4 Int valves? Thanks
B3 1969 Charger R/T SE, 440/727 with 3:91s running 11.07@120
|
|
|
Re: B1 MC heads for a 500" RB
[Re: WO23Coronet]
#2147750
09/05/16 01:36 AM
09/05/16 01:36 AM
|
Joined: Oct 2009
Posts: 248 near St Petersburg, FL
Lifsgrt
OP
enthusiast
|
OP
enthusiast
Joined: Oct 2009
Posts: 248
near St Petersburg, FL
|
Stock block required for the class. I plan billet aluminum caps and a girdle to shore up the bottom end, wanting to get 900 or so out of it. Just need to know if the 2.4" intake valves will work in a 4.350 bore AND if they'll be worse than smaller valves for a 500" bullet. I am buying used heads if they'll work, thanks.
B3 1969 Charger R/T SE, 440/727 with 3:91s running 11.07@120
|
|
|
Re: B1 MC heads for a 500" RB
[Re: Lifsgrt]
#2147816
09/05/16 05:47 AM
09/05/16 05:47 AM
|
Joined: Nov 2004
Posts: 6,890 North Alabama
Monte_Smith
master
|
master
Joined: Nov 2004
Posts: 6,890
North Alabama
|
Should clear fine...........if it won't, notch the bore. Not the first time that's had to be done. And with the right cam, you WON'T have to spin it to the moon to make it run.
As for stock block rule.........tell em its a 383 car.......LOL!!!
Last edited by Monte_Smith; 09/05/16 05:48 AM.
|
|
|
Re: B1 MC heads for a 500" RB
[Re: Monte_Smith]
#2147878
09/05/16 11:21 AM
09/05/16 11:21 AM
|
Joined: Oct 2009
Posts: 248 near St Petersburg, FL
Lifsgrt
OP
enthusiast
|
OP
enthusiast
Joined: Oct 2009
Posts: 248
near St Petersburg, FL
|
I can use any factory block size that was available in the car. It doesn't have to be the correct year, but I can't use a 400 or 360 block for instance in a 1969 car. Thanks for the replies.
B3 1969 Charger R/T SE, 440/727 with 3:91s running 11.07@120
|
|
|
Re: B1 MC heads for a 500" RB
[Re: Monte_Smith]
#2147884
09/05/16 11:29 AM
09/05/16 11:29 AM
|
Joined: Dec 2013
Posts: 4,704 Wichita
GY3
master
|
master
Joined: Dec 2013
Posts: 4,704
Wichita
|
Should clear fine...........if it won't, notch the bore. Not the first time that's had to be done. And with the right cam, you WON'T have to spin it to the moon to make it run.
As for stock block rule.........tell em its a 383 car.......LOL!!! A grinder and JB weld makes "383" numbers on the side of the block rather easily if anyone gets nosy..
|
|
|
Re: B1 MC heads for a 500" RB
[Re: Lifsgrt]
#2147954
09/05/16 01:23 PM
09/05/16 01:23 PM
|
Joined: Jan 2003
Posts: 10,019 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,019
Frostbitefalls MN (Rocky&Bullw...
|
Consider a center weighted crank. It greatly reduces the stress shifted to the inner bearings because the counter weights are more in line with the forces they are offsetting. I saw the cap walk go away in a Megablock I have when I went to a center weighted crank, and the bob weight is 2432, pretty heavy. The cost difference is around 2500 for a crower, been a long time since I bought mine so it may be higher, but worth every dime for a project like yours. If you can use a 400 block, and lighten the rotating assembly as much as possible, the deal might live a decent life.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: B1 MC heads for a 500" RB
[Re: Lifsgrt]
#2148236
09/05/16 08:17 PM
09/05/16 08:17 PM
|
Joined: Jan 2008
Posts: 4,255 Canada
WO23Coronet
master
|
master
Joined: Jan 2008
Posts: 4,255
Canada
|
Have you considered doing Darton sleeves? I know in a normal build it doesn't make sense but for a stock block class that you're obviously set on kill for it might make sense. Btw, there have been legit reports of 383's using 400 castings when the crossover was happening........I think for warranty blocks they used 400 castings. A 400 with Darton sleeves would get it done
Last edited by WO23Coronet; 09/05/16 08:21 PM.
|
|
|
Re: B1 MC heads for a 500" RB
[Re: camastomcat]
#2148470
09/06/16 12:48 AM
09/06/16 12:48 AM
|
Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
|
That sure is pretty Polished and lightweight, maybe not a ultra lightweight, but lighter than ones I've weighed Tom, how long is the stroke on this one?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
|
|