Competition BOMBING a CR vs. 24 Valver Gen 2

[Pourinthecoal]

Hey guys,



Appreciate the help in the last thread I had here. Just wondering, if a guy is to bomb out a newer generation truck, is there more potential in the newer CR engines as compared to the 24 valvers. Jst thinking to myself, I feel that as long as there is adequate fuel to the engine it shouldn't matter, henceforth a CR engine is not capable for nay more horse than a 24 valver. Am I right on this or does to the injector pressures play a part in this? Just for future reference for a buildup. Thank-you in advance!



Andy

 

[JBlock]

Yes yes

It appears that with just a box you tack on 175 hp on to the 325 stock, that 500 at the flywheel. with a programers.



At stage! Yes the 3rd generations bomb quickly but the trubo will be needed very quick if you over wind that HY-35.

 

[Devan Manis]

not only does the pressure play a big role, but the pilot injection, and the control.

 

[jwilliams3]

They are both very capable engines.

I think though overall the CR is more street friendly into the higher hp area.

 

[mattymac]

I think the CR is an easily potent 500 HP truck, Its more reliable adjustable and streetable at this level IMO than the 24v's.

 

[ToolManTimTaylor]

All I know is I finally got a ride in a worked 3rd gen dually that has a comprable ammount of bomb money in it as do I. In fact maybee less in overall "Stuff Needed" to go fast. All I can say is wholly cow what a ride. Your dollar can go further right off the bat because you get more from the get go.



325 H. P CR Vs 235 H. P 2Nd Gen stock for stock. (allmost 100 hp Pro CR)

Better Trans on the CR (Alltho argueable :-laf )



Aside from just the heart of it all one of the biggest that I can tell is frame stiffness. Stiffness or rigidity ... Ridgididititty ... Rid. . rig . . aww heck stiffness to some extent transferes more work to the suspension that at the end gets it to the ground and not absorbed so much in flex.

 

[hammersley]

But don't forget the CR's have a

KITTY that every time you use it it clogs up a little bit more!!!

 

[jwilliams3]

They do? :-laf

 

[Toolman9304]

I think for overall performance the 24 valve has it right now. But in the future the CR will surpass it when the programing gets better, it has allot more potential. The cool thing about the CR'S is the adjustability. I pull my first gen truck to the track with my 3rd gen " incase I break something" change the program and race. I don't know of many 24 or 12 valves that can do that. They are either race trucks or work trucks

 

[Pourinthecoal]

I hear what you guys are saying. I agree that since the CR atomizes the fuel more than a 24 valver, it should always be capable of higher numbers. BUt I'm talking when a truck gets up to 600-700 HP, not just a chip exhaust and intake. Is there much difference in the POTENTIAL of the CR due to the better injection control? Do the heads flow better? THese type of things are what I'm wondering.



One thing I know is the older 24 valvers had much more reliable fuel systems. And injectors can account for much greater gains than the CR motor. That is the main thing I am lookinf for is reliable HP at high levels.



Thanks!

 

[WUnderwood]

I think the 3rd gens are better, because of all the electronics, quietness, and their ease to work on. throw a few chips at it, intake, exhaust, gauges, and you are playing with 600 ponies on the stock injectors and CP3



just my opinion

 

[ToolManTimTaylor]

They do? :-laf

:-laf :-laf :-laf

 

[RCenters]

after a day of dyno runs at scheids few weeks ago and watching some CRs push 600 with 90hp rated Injectors then u c the 2nd gens with the same amount but usen a 200+ inj the CR should have better street manors , but they both can make just as much power as ether just depends on what u want

 

[BigDan]

Ive owned both and ill tell you this.



It take's more HP to get a CR moving down the track given the same ET. CR's always seem to run slower at the track, maybe its due tto the weight. A 600hp CR is good for low 13's while a 600HP 24V is good for low 12's possabily high 11's. I know of some 700hp CR's that cant break into the 12's. I believe 24V do better in slead pulling as they can turn 4,000rpm and nobody has been able to pass 3,500 on a CR.



I know the CR's CP3 injection pump is capable of more but it doesnt seem to fuel hard going by SOP meter. It's weird I went for a ride in a 550HP CR and it didnt hit as hard and quick as my 99, even though he had more HP. I guess CR's are able to get to 500HP quicker but once you get into injector and CP3 mods it gets WAY more expensive then on a 24V. I heard the stage 3 CP3's are over $4,000!!



Also I strongly reccomend going with a 04. 5+ as they respond WAY better to mods and will always give more HP per dollar vs the 03-04. There's guy's with 05's putting down 600hp with stock injectors and injecton pumps.



I know you can make a 24V run high 11's low 12's for cheaper then a CR. Yes CR's are more street friendly at higher HP levels since you can turn your 600HP CR into a dosile 400HP street version with a few pushes of a button. Not to mention 24V are cheaper and are most likely out of warranty so bomb away.



Again I am not a professional builder but I have learned alot by hanging out here.

 

[2broke2smoke]

we just upgraded my friends '03 TST box with the early twins program last night ...



all i can say is wow ... :--)



with just a box, exhaust and intake this thing will flat fly ...



it will make 12psi boost just revving in neutral ...



it really hammers that little hy ...



it hits harder than any 24 valve with comparable mods i've ever rode in



don't know why they do but i think the CR's will spool turbos much quicker than ANY of the previous motors ... (he says putting on his flame suit)

 

[Toolman9304]

The big reason the CR'S are slower at the track is 1 they weigh allot more the axles are bigger and the frames are heavier. My truck weighs in at 7200 with me in it with out the spare tire and the rear seat . A 24 valve weighs about 6500-6600 doing the same stuff a hundred pounds is a tenth in the quarter.

2 the programing for the CR'S is just not there yet. The program I run in my truck defuels on the line if I try and launch over 15 psi because of Torque Managment so my 60 ft. times suck. but it fuels hard on the top. I have another program that deletes TM and my 60 ft times are right there with the 24 valves but it doesn't have any top end fueling . When the programmers can get this sorted out or we can get EFI live the CR'S will be very hard to beat.

 

[Luken]

I have another program that deletes TM and my 60 ft times are right there with the 24 valves but it doesn't have any top end fueling .

My truck is the exact same way. Without tq man my 60 fts are 1. 69-1. 75, but the top end sucks.



With tq man my 60ft's suck bad but the top end has alot more power.



I think the main reason is we are draining the rail early and it can never pick back up. Hopefully my cp3 mod will fix that Oo. What do you guys think?

 

[Bigd6.6]

I would try just the cp3mod with the stock sticks the reason is that the stage 2 only flows 30 percent more and i would think that big injectors would just put you right back to where you were. I might be wrong has anyone heard of a truck with a stage 2 cp3 and factory injectors i think that is what im gonna do next pulling season.

 

[MD500E]

I am a little slow to accept new technology (Long live the p-pump Oo. ) but after playing around a little bit with the new cr trucks I would put my money on them any day. Especially with new products like smarty and maybe someday efi-live. My 98 with all of its mods had a hard time running down a stock 05 with just a smarty!

 

[Bob Wagner]

and just consider the price difference :{ cr is very cheap to mod