7.1 Pros and cons

SmokeShow

Well-known member
Nov 30, 2006
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in theory, the stroker shouldn't have to work as hard to make the same power as a lower displacement equivalent hp therefore shouldn't wear as much or as quickly as a standard dmax. HOWEVER, that is just on paper. Way too many variables to make that statement a reality IMO. If all, and I mean everything where exactly the same, then the stroker should be easier on parts to make the same power.
 

Cougar281

Well-known member
Sep 11, 2006
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St Louis, MO
So far as a daily driver its been great, no issues at all. The milage increased alot. He gets about 21 to 23mpg pulling his enclosed motorcycle trailer with 4 bikes in it. As far as sitting in traffic I had it a few weeks ago and it was 103* to 105* and we had the ac blowing and it stayed just under 210* all day.

Wow... That's pretty impressive; Not really what I would have expected with more displacement.
 

SmokeShow

Well-known member
Nov 30, 2006
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I'm curious about a destoked dmax for higher RPMs??? Any thoughts? With some optimized air flow (serious flowing heads and exhaust and turbo setup) it should be plenty capable of making power and should be able to spin higher, easier shouldn't it? Of course, in theory. This might be what I looked into if I were a drag racer.


For pulling, I'd want the extra mass in the rotating assembly so stroking would be nice (assuming it adds weight to the rotating assembly) because the acceleration of the RPMs isn't as important as the actual peak and sustained RPM. Not so much the case for racing or least I think so. I'm no racer by any stretch but I'd think quicker revving would be more desirable for a racer.



c-ya
 

z79outlaw

Member
Apr 20, 2007
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I'm curious about a destoked dmax for higher RPMs??? Any thoughts? With some optimized air flow (serious flowing heads and exhaust and turbo setup) it should be plenty capable of making power and should be able to spin higher, easier shouldn't it? Of course, in theory. This might be what I looked into if I were a drag racer.


For pulling, I'd want the extra mass in the rotating assembly so stroking would be nice (assuming it adds weight to the rotating assembly) because the acceleration of the RPMs isn't as important as the actual peak and sustained RPM. Not so much the case for racing or least I think so. I'm no racer by any stretch but I'd think quicker revving would be more desirable for a racer.



c-ya

Was just going to bring that up. I thought there was a shameless self promoter doing some neat things, or talking about doing some neat things with Duramax's on COMP D, hint he has terrible grammar as well. But serisouly theres alot of stuff talked about in that thread that definetely raise an eye brow. I thought there a de-stroker in the works as well as strokers that werent SoCals
 
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68skylark455

Larry the "Stroker"
Aug 7, 2008
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www.larrysperformancepalace.com
in theory, the stroker shouldn't have to work as hard to make the same power as a lower displacement equivalent hp therefore shouldn't wear as much or as quickly as a standard dmax. HOWEVER, that is just on paper. Way too many variables to make that statement a reality IMO. If all, and I mean everything where exactly the same, then the stroker should be easier on parts to make the same power.
You are right and thats not just on paper. Strokers have been used for years for just that fact. This truck doesn't seem to need the same amount of fuel to do the same amount of work.
 

clayt171

He's watching you
Aug 21, 2008
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I O Way
I'm curious about a destoked dmax for higher RPMs??? Any thoughts? With some optimized air flow (serious flowing heads and exhaust and turbo setup) it should be plenty capable of making power and should be able to spin higher, easier shouldn't it? Of course, in theory. This might be what I looked into if I were a drag racer.

Aren't the lightly modded engines already able to turn faster than the electronics allow?
 

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
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Norco CA
www.mcratracing.com
I'm curious about a destoked dmax for higher RPMs??? Any thoughts? With some optimized air flow (serious flowing heads and exhaust and turbo setup) it should be plenty capable of making power and should be able to spin higher, easier shouldn't it? Of course, in theory. This might be what I looked into if I were a drag racer.


For pulling, I'd want the extra mass in the rotating assembly so stroking would be nice (assuming it adds weight to the rotating assembly) because the acceleration of the RPMs isn't as important as the actual peak and sustained RPM. Not so much the case for racing or least I think so. I'm no racer by any stretch but I'd think quicker revving would be more desirable for a racer.



c-ya

I don't think destroking would show any advantage at the RPM levels we can run on diesel fuel, but that's just my opinion. But I still believe that rpm is the key to a lot of Dmax problems.

The reason I starting playing with higher peak HP rpm back in 2006, was in an effort to make it so folk would not need aftermarket rods to run 750HP, and make it so the Allison would live longer. Basically, bolt on parts, and run the stock Dmax engine. With a HP peak at 4500rpm, I made 800rwhp with a peak torque of less than 1100ftlb, a number we know is fairly safe on the rods and the trans. However, the piston melting thing put a dampener on my efforts, as well as some other issues.

750HP was chosen as the desired power, since it is enough to put a typical Dmax into rollbar territory (which is where most racers stop at), and could be attained with a 3.0 charger for pulling.

But I'm just one guy hotrodding his trucks, with a real job, kids, and a busy race schedule. I haven't solved all the problems of running a street truck in that trim. I think it will be done someday, but it's unlikely to be me who puts the final pieces in the puzzle.
 

dmaxvaz

wannabe puller
Nov 22, 2006
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METRO DETROIT
I ran one of these a little while back in a past motor. It was called "To much power for the stock rods" :rofl: ;) :rofl: J/K.




I'm sorry, I just had to do it. I do agree strongly with the "No replacement or displacement".

it probably ran damn good before it blew up:D
 
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ChevyDieselLLY

Whats A Budget???
Apr 1, 2008
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So far as a daily driver its been great, no issues at all. The milage increased alot. He gets about 21 to 23mpg pulling his enclosed motorcycle trailer with 4 bikes in it. As far as sitting in traffic I had it a few weeks ago and it was 103* to 105* and we had the ac blowing and it stayed just under 210* all day.

what does he see for mpg while not towing and what about larger loads? 10k plus
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
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Here's the text:


· New 4330M Billet Crank +.250 Stroke Built to Top Fuel Standards.

· Knife Edged Counterweights.

· Redesigned And Improved Crankshaft Oiling Passages.

· Crower Billet Rods. (Optional Carrillo add $425)

· ATS Billet Flywheel. (SFI Approved For Competition Use)

· SoCal Diesel Super Damper. (SFI Approved For Competition Use)

· Mahle “Forged” Piston And Ring Kit. (Optional Thermal Barrier Coating $400)

· Choose from Std, +.020 (433ci) and +.040 (437ci) bore sizes.

· Mahle Clevite Inc. “H” Style Main and Rod bearings.

· Crank Gear Installed. (Included, Not shown)

· Rear Main Seal Included. (Included, Not Shown)

· Entire Assembly Digitally Balanced And Ready To Install In Your Block.

What Id like to see is a price breakdown of all these individual parts. I think if someone were to compare what buying all these parts individually costs compared to "in the kit", theyd see it is probably a better deal like this.

As for the cu in debate....all one has to do is look to the Chevy 383 stroker kits to see what can be done, and the results. Larger displacement will make more power with the same effort.
 

ChevyDieselLLY

Whats A Budget???
Apr 1, 2008
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What Id like to see is a price breakdown of all these individual parts. I think if someone were to compare what buying all these parts individually costs compared to "in the kit", theyd see it is probably a better deal like this.

As for the cu in debate....all one has to do is look to the Chevy 383 stroker kits to see what can be done, and the results. Larger displacement will make more power with the same effort.

Tom i did that the other day at work, added in everything that was in the kit the only thing i couldnt really get a price for is a crank but you can get a used one from 500 and up and the price difference was just about 6k.

so aside from the 13,000 $ price tag are there any cons?


HAHA i really dont think there is one. its just are there enough pros to out weight the con (the price tag). its be said already if you can make the same power with less stress on the motor with the kit it should live longer which in time could pay for its self. i think the thing that stops me from pulling the trigger is i would have to run a stock charger if i bought this kit for some time seeing how i wouldnt have the money for an upgrade......
 

DMAXchris

It’s only temporary!
Apr 28, 2009
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Natrona Heights PA
so aside from the 13,000 $ price tag are there any cons?

I went for a ride in an LBZ stroker and the only thing I noticed was it sounded more like a diesel. That's all I could come up with, but thats a pro for me.:D
It was a twin truck, 366/480 and it was mild mannered until your right foot told it otherwise.
 

ChevyDieselLLY

Whats A Budget???
Apr 1, 2008
2,684
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MI, NC, now Hawaii
I went for a ride in an LBZ stroker and the only thing I noticed was it sounded more like a diesel. That's all I could come up with, but thats a pro for me.:D
It was a twin truck, 366/480 and it was mild mannered until your right foot told it otherwise.

is that guy on here? id like to ask him a few questions