440EX Race Head
#1
#2
440EX Race Head
I just aquired a duncan 440 motor with the rod sticking out of the case. Has over sized valves in ported head w/ their mid/top end cam.
I wanted to do a 426 kit but know if I like the method (just bore it all the way out).
I'll prbly just use that head with a 440 kit
can anyone suggest a good rod.
I seen 2 440s & 1 400 w/12.5:1 comp. with rods sticking out
I have always used hot rods in 2 strokes. I was looking at sparks 440 kits and rods.
I wanted to do a 426 kit but know if I like the method (just bore it all the way out).
I'll prbly just use that head with a 440 kit
can anyone suggest a good rod.
I seen 2 440s & 1 400 w/12.5:1 comp. with rods sticking out
I have always used hot rods in 2 strokes. I was looking at sparks 440 kits and rods.
#3
440EX Race Head
Originally posted by: CapnMorgan
I just aquired a duncan 440 motor with the rod sticking out of the case. Has over sized valves in ported head w/ their mid/top end cam.
I wanted to do a 426 kit but know if I like the method (just bore it all the way out).
I'll prbly just use that head with a 440 kit
can anyone suggest a good rod.
I seen 2 440s & 1 400 w/12.5:1 comp. with rods sticking out
I have always used hot rods in 2 strokes. I was looking at sparks 440 kits and rods.
I just aquired a duncan 440 motor with the rod sticking out of the case. Has over sized valves in ported head w/ their mid/top end cam.
I wanted to do a 426 kit but know if I like the method (just bore it all the way out).
I'll prbly just use that head with a 440 kit
can anyone suggest a good rod.
I seen 2 440s & 1 400 w/12.5:1 comp. with rods sticking out
I have always used hot rods in 2 strokes. I was looking at sparks 440 kits and rods.
This weekend I raced another 440 bore EX with a pipe, cams and carb and I took him up comp hill at Florence in the wet sand with power to spare. There are a few tricks that have to be done with the Edlebrock carb, and getting the right cam makes all the difference too. In a year I'll have it stroked to a 460 and that will be really fun!
#4
440EX Race Head
would you put a GMC 6/71 Blower on a stock 305.
would you expect a stock honda vtec to last long with a 150hp nitrous setup
The bottom end was not designed for 12.5:1 compression or a ported race head.
It also wasn't designed to rev past 8500 rpm.
Do you think 7000+HP Top fuel engines use stock rods and cranks.
http://www.bmeltd.com/dragster.htm
http://www.stevehamiltonracing.com/new/car.html
Check the links if you don't believe the HP numbers
My Point is:
Do it right the first time. I'll already be in the motor, why not buy some insurance.
That just how I am. I have a 355cid Chevy in a 91 S-10 w/an intake/cam/ignition setup for 5800-6500 rpm yet it has forged pistons, H-beam rods and a lunati crank thats all balanced and safe to about 7500rpm. Why? I never worry about throwing a rod durring a burnout because the engine can't over rev.(also has MSD6AL with 6000rpm rev limit just in case)
would you expect a stock honda vtec to last long with a 150hp nitrous setup
The bottom end was not designed for 12.5:1 compression or a ported race head.
It also wasn't designed to rev past 8500 rpm.
Do you think 7000+HP Top fuel engines use stock rods and cranks.
http://www.bmeltd.com/dragster.htm
http://www.stevehamiltonracing.com/new/car.html
Check the links if you don't believe the HP numbers
My Point is:
Do it right the first time. I'll already be in the motor, why not buy some insurance.
That just how I am. I have a 355cid Chevy in a 91 S-10 w/an intake/cam/ignition setup for 5800-6500 rpm yet it has forged pistons, H-beam rods and a lunati crank thats all balanced and safe to about 7500rpm. Why? I never worry about throwing a rod durring a burnout because the engine can't over rev.(also has MSD6AL with 6000rpm rev limit just in case)
#6
440EX Race Head
Originally posted by: CapnMorgan
would you put a GMC 6/71 Blower on a stock 305.
would you expect a stock honda vtec to last long with a 150hp nitrous setup
The bottom end was not designed for 12.5:1 compression or a ported race head.
It also wasn't designed to rev past 8500 rpm.
Do you think 7000+HP Top fuel engines use stock rods and cranks.
http://www.bmeltd.com/dragster.htm
http://www.stevehamiltonracing.com/new/car.html
Check the links if you don't believe the HP numbers
My Point is:
Do it right the first time. I'll already be in the motor, why not buy some insurance.
That just how I am. I have a 355cid Chevy in a 91 S-10 w/an intake/cam/ignition setup for 5800-6500 rpm yet it has forged pistons, H-beam rods and a lunati crank thats all balanced and safe to about 7500rpm. Why? I never worry about throwing a rod durring a burnout because the engine can't over rev.(also has MSD6AL with 6000rpm rev limit just in case)
would you put a GMC 6/71 Blower on a stock 305.
would you expect a stock honda vtec to last long with a 150hp nitrous setup
The bottom end was not designed for 12.5:1 compression or a ported race head.
It also wasn't designed to rev past 8500 rpm.
Do you think 7000+HP Top fuel engines use stock rods and cranks.
http://www.bmeltd.com/dragster.htm
http://www.stevehamiltonracing.com/new/car.html
Check the links if you don't believe the HP numbers
My Point is:
Do it right the first time. I'll already be in the motor, why not buy some insurance.
That just how I am. I have a 355cid Chevy in a 91 S-10 w/an intake/cam/ignition setup for 5800-6500 rpm yet it has forged pistons, H-beam rods and a lunati crank thats all balanced and safe to about 7500rpm. Why? I never worry about throwing a rod durring a burnout because the engine can't over rev.(also has MSD6AL with 6000rpm rev limit just in case)
#7
440EX Race Head
Originally posted by: CapnMorgan
I just aquired a duncan 440 motor with the rod sticking out of the case. Has over sized valves in ported head w/ their mid/top end cam.
I wanted to do a 426 kit but know if I like the method (just bore it all the way out).
I'll prbly just use that head with a 440 kit
can anyone suggest a good rod.
I seen 2 440s & 1 400 w/12.5:1 comp. with rods sticking out
I have always used hot rods in 2 strokes. I was looking at sparks 440 kits and rods.
I just aquired a duncan 440 motor with the rod sticking out of the case. Has over sized valves in ported head w/ their mid/top end cam.
I wanted to do a 426 kit but know if I like the method (just bore it all the way out).
I'll prbly just use that head with a 440 kit
can anyone suggest a good rod.
I seen 2 440s & 1 400 w/12.5:1 comp. with rods sticking out
I have always used hot rods in 2 strokes. I was looking at sparks 440 kits and rods.
The hot rods arent much better than stock, Its a replacement. But like cal said the carrilos are pretty much bullet proof.
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#8
440EX Race Head
Originally posted by: CapnMorgan
I have a 355cid Chevy in a 91 S-10 w/an intake/cam/ignition setup for 5800-6500 rpm yet it has forged pistons, H-beam rods and a lunati crank thats all balanced and safe to about 7500rpm. Why? I never worry about throwing a rod durring a burnout because the engine can't over rev.(also has MSD6AL with 6000rpm rev limit just in case)
I have a 355cid Chevy in a 91 S-10 w/an intake/cam/ignition setup for 5800-6500 rpm yet it has forged pistons, H-beam rods and a lunati crank thats all balanced and safe to about 7500rpm. Why? I never worry about throwing a rod durring a burnout because the engine can't over rev.(also has MSD6AL with 6000rpm rev limit just in case)
#9
440EX Race Head
CapnMorgan,
You can spend all kinds of money to protect yourself for something that may never happen. I know of no 440 big bore that "Caused" a rod failure. I run mine really hard, and have nearly every weekend for a year. I inspected the the rod 2 weeks ago when I upgraded to the race head - there are no signs of wear - none.
I think an aftermarket rod is something you can do if you want - but in my opinion, its not needed when going from a 400 to a big bore 440.
Sorry...
Marky
You can spend all kinds of money to protect yourself for something that may never happen. I know of no 440 big bore that "Caused" a rod failure. I run mine really hard, and have nearly every weekend for a year. I inspected the the rod 2 weeks ago when I upgraded to the race head - there are no signs of wear - none.
I think an aftermarket rod is something you can do if you want - but in my opinion, its not needed when going from a 400 to a big bore 440.
Sorry...
Marky