48re testing

[BRayls]

while I was checking into the brake compatability of the 48re . I was in the dyno room at work,some may have read about this already,they had the srt allum v-10 mated to the 48re and dyno simulating 14,000 lb trailer. the test has been going for a week now,at 10 am the trans had 5800+ miles on it. the v-10 used 1000 gallons of gas,for a sorry 5. 8 mpg rating. but the test goes as follows so it is understandable,full throttle 0-90mph, off throttle coast 30 seconds ,stop and over again. this is the same engine that is in the viper ,I think it has 500+ hp and 500+ torque,if incorrect I am sorry please correct the numbers. I will be checking into the test and will update this thread as I find out more info. looking good for the 48re.

 

[banshee]

It should be just fine behind the Viper mill. It's the low RPM Cummins torque that rips 'em to shreds.



John

 

[BRayls]

I can assure you that the v-10 is just as hard on the transmission as a"STOCK" RAM. now those who mod,you are asking for it. if that could not be obvious ,when you can double the power. I do not think many products can get outside there design perimeters by that much and be expected to hold up.

 

[juicedcummins]

Originally posted by BRayls

I can assure you that the v-10 is just as hard on the transmission as a"STOCK" RAM.





That sounds like the same thinking the Chrysler engineers have been going by for years.

I'm not sure on the torque curve of the v-10 but I doubt it gets as early as the Mighty Cummins!



Your updates on the 48re are appreciated.

 

[BRayls]

I will agree ,that the curve is not as strong down low. but remember they are only worried about "stock" trucks. my biggest complaint,and most will agree, is the weak TC. that being said when does the TC lock-up? when the cummins is down low in the curve,not. I also hear of the v-b complaints,while one the older trucks I would agree,they left much to be desired and for improvements. which they have done. lock up is much quicker now due to the v-b mods over the older units. as well as quicker shifts. problem here is you get into,do you want to please the minority(modders) or the majority (stockers)? I can assure you the minority is not going to win. the first thing,I did on the auto's is change the v-b. we had done some,back in 97 doing proto's for enginneering,which is what led to the better v-b. I have a modded v-b from engineering for a 47 if anyone in the area would like to do the swap,it is a brand new unit just swap them here. did this swap on my 97 that had 267 rwhp and 670 lbs truck had over 140,000 when it was sold recently,transmission was finally going and needed rebuilt. anyhow anyoone who had v-b complaints please pm me with why you did not like it,thanks in advance. the v-b mod helps the TC lock-up by alowing the fluid to escape much faster,doing so by drilling a . 090 hole above the switch valve. also has mods to separater plate for quicker shifts,these led to design changes in the steel plate allowing TC lock faster,without drilling the hole(in the 48re stock). I can take pics of the v-b for anyone wanting to see what was done.

 

[juicedcummins]

Lots of talk about valve- bodies back for the model years 94-97 and the improvements you have seen. The bottom line on my current personal ride is THE FACTORY valve -body [in a 99] was CRAP from day one. Did the production guys not get any specs from your tests going back to 94-97?



For the hell of it what kind of torque does that v-10 put out @say 1800rpm.

What about the 5. 9@ 1800rpm? { you could even go back to a 12}valve if you wish. }

No one will argue that the stock tc was junk.

That 1800 is very conservative for an in-line 6. They should be pulled down to 1400rpm just like the OTR trucks. The main reason they are not is try and save the auto and or save the clutch.



Not trying to start a ******* match.

 

[BRayls]

I think you are right about the rpm,I do not think at that low of rpm that the pump has enough pressure to do its job,just guessing. as for the spec of the test,the test units came from engineering and they did not rush the changes. would you rather have a failure or me the guinea pig?I will check on the numbers and see if I can get them.

 

[BRayls]

just an update for those interested. went down to see the srt-10 4 door truck so I stopped at the dyno room and seen the mule has about 20,000 miles on it now looking good. I was told they have a kevlar band in them for the v-10(only,I was told) and it need adjusted every 15,000 miles or so.

 

[stevenknapp]

Did the production guys not get any specs from your tests going back to 94-97?



Can't speak for mechanical stuff, but the lag time from engineering to production in automotive electronics applications is REALLY long. Even after all the engineering work is done there are years of testing that follow.

 

[BRayls]

not sure I understand what you are asking?