More stroke?
#3049883
06/12/22 11:24 AM
06/12/22 11:24 AM
|
Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
|
On my current 550 cube 572-13 motor project, i may consider going bigger if it makes sense . Monday i am going to pick up a Callies 4.5 stroke crank with 2.375 rod pins. I can offset grind it to 4.650 to use a 2.200 rod bearing. My pistons on order have a compression height of 1.452 to match my Molnar 7.1 h beams and 4. 315 stroke crank. I would gain about 43 cubes , or 593 cu in. Pros - 43 cubes , more torque. 30 more HP? Cons- Cost, lose the center counter weights i have on the 4.315 stroke crower. Higher rod angle Rebalance, find 7.0 rods, or go aluminum rods if they will fit
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: More stroke?
[Re: rickseeman]
#3049913
06/12/22 12:46 PM
06/12/22 12:46 PM
|
Joined: Jan 2003
Posts: 19,377 Las Vegas
Al_Alguire
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 19,377
Las Vegas
|
If you plan ongoing that route I suggest you call the aluminum rod suppliers. You might not like the answer. Our dragster engine will miss this entire year due to parts lead times....If you really want bigger start buying parts now for another engine, block and al. trust me you will have plenty f time to get the money together. I have threeengines going right now and all in various stages of hurry up and wait.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
|
|
|
Re: More stroke?
[Re: Al_Alguire]
#3049926
06/12/22 01:24 PM
06/12/22 01:24 PM
|
Joined: Dec 2006
Posts: 2,115 Byron, NY
W.I.N. Racing
top fuel
|
top fuel
Joined: Dec 2006
Posts: 2,115
Byron, NY
|
They may have caught up but ??? I used to get Alum rods within a week, the set I just got in mid march were ordered the end of Dec. Even then I had to order through someone who orders a lot of rods. So as Al stated check and see.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
|
|
|
Re: More stroke?
[Re: gregsdart]
#3049949
06/12/22 02:45 PM
06/12/22 02:45 PM
|
Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
|
Last edited by Cab_Burge; 06/12/22 02:46 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: More stroke?
[Re: Cab_Burge]
#3049984
06/12/22 05:01 PM
06/12/22 05:01 PM
|
Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
|
I could use this new ( to me) crank in the megablock i have. I would need to find a set of 2.375 rod bearing h beams 6.80 long. 572 cubes, would use the pistons and rings that were 8n the first 550 (megablock) motor. Or i could grind the crank to 4.625 with 2.2 bearings and have a 588.
Last edited by gregsdart; 06/12/22 05:02 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: More stroke?
[Re: gregsdart]
#3049989
06/12/22 05:42 PM
06/12/22 05:42 PM
|
Joined: Jan 2003
Posts: 11,722 Portage,michigan
B3422W5
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 11,722
Portage,michigan
|
I could use this new ( to me) crank in the megablock i have. I would need to find a set of 2.375 rod bearing h beams 6.80 long. 572 cubes, would use the pistons and rings that were 8n the first 550 (megablock) motor. Or i could grind the crank to 4.625 with 2.2 bearings and have a 588. Seems to me the key to going faster is better heads, or weight. You have -1 heads, correct? Sell them and buy better heads if you want to go faster, otherwise your peeling a peanut
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
|
|
|
Re: More stroke?
[Re: gregsdart]
#3049990
06/12/22 05:45 PM
06/12/22 05:45 PM
|
Joined: Jan 2003
Posts: 2,926 A shed in England
Tig
master
|
master
Joined: Jan 2003
Posts: 2,926
A shed in England
|
Not sure on 4.625 stroke but you get into rod / cam clearance issues with steel rods with a 4.750 stroke with a wedge, with any decent cam, (unless you have a raised cam block). I'm guessing you may have more of an issue with an aluminium rod. Something to be aware of.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
|
|
|
Re: More stroke?
[Re: B3422W5]
#3050022
06/12/22 08:09 PM
06/12/22 08:09 PM
|
Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
|
I could use this new ( to me) crank in the megablock i have. I would need to find a set of 2.375 rod bearing h beams 6.80 long. 572 cubes, would use the pistons and rings that were 8n the first 550 (megablock) motor. Or i could grind the crank to 4.625 with 2.2 bearings and have a 588. Seems to me the key to going faster is better heads, or weight. You have -1 heads, correct? Sell them and buy better heads if you want to go faster, otherwise your peeling a peanut 572-13 will be on the aluminum block motor, 385cnc and finish ported to get some more flow. Vern l, member here, made 1065 hp with 572-13 heads. It probably was a 604.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: More stroke?
[Re: gregsdart]
#3050049
06/12/22 10:10 PM
06/12/22 10:10 PM
|
Joined: Jan 2003
Posts: 11,722 Portage,michigan
B3422W5
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 11,722
Portage,michigan
|
I could use this new ( to me) crank in the megablock i have. I would need to find a set of 2.375 rod bearing h beams 6.80 long. 572 cubes, would use the pistons and rings that were 8n the first 550 (megablock) motor. Or i could grind the crank to 4.625 with 2.2 bearings and have a 588. Seems to me the key to going faster is better heads, or weight. You have -1 heads, correct? Sell them and buy better heads if you want to go faster, otherwise your peeling a peanut 572-13 will be on the aluminum block motor, 385cnc and finish ported to get some more flow. Vern l, member here, made 1065 hp with 572-13 heads. It probably was a 604. Nice upgrade. Predators?
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
|
|
|
Re: More stroke?
[Re: gregsdart]
#3050336
06/13/22 10:55 PM
06/13/22 10:55 PM
|
Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
|
I went and got the crank today. Used Callies, 2.375 rod pins, 4.5 stroke. If i can find a set of good, strong 6.76 or 6.8 h beams with . 990 small end, 2.375 big end. I had planned to use it in the aluminum block, but it makes more sense to put it in the megablock for now as a spare motor. i can end up at -.027 (below) to +. 013 (above) piston to deck hight with a good crank that has rounded leading edges on the counter weights and double keyways. The down side is the large 2.375 bearings. But i will have to find another set of 440-1 castings to put the megablock back together.
Last edited by gregsdart; 06/13/22 10:58 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: More stroke?
[Re: B1duster]
#3051242
06/17/22 11:48 AM
06/17/22 11:48 AM
|
Joined: May 2005
Posts: 1,996 Apollo, PA.
B1MAXX
top fuel
|
top fuel
Joined: May 2005
Posts: 1,996
Apollo, PA.
|
The only rods with the mopar big end are going to be in mopar lengths. 6.76, 6.86. Unless you want custom.
Last edited by B1MAXX; 06/17/22 11:50 AM.
|
|
|
Re: More stroke?
[Re: Cab_Burge]
#3051662
06/19/22 08:56 AM
06/19/22 08:56 AM
|
Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
|
I was recently looking for 6.7 or 6.8 rods with mopar big end and couldn’t find anything Try Scat Cab, what power level would you trust scat rods to? Lets guess 2250 bob wieght, 8000 rpm cieling.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
|
|