drivetrain power loss
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drivetrain power loss I dynoed my c5 a while back with 342 gears 3600 circle d and radial tires. I dynoed again but now with bigger cam 373 gears 4000 multi disc circle d and et streets. We lost roulghly 25 rwhp from the swap. What are the losses you see from each
1. higher numerical gears
2. higher stall
3. and difference in tires.
thanks
1. higher numerical gears
2. higher stall
3. and difference in tires.
thanks
Thread Starter
Banned
Joined: Nov 2008
Posts: 265
Likes: 0
I'm just looking to see what others lost from similar component changes I heard most of the loss is from being on the et streets. about 20 or so. I have also heard about 10+- on gears. The stall jump might about 10 or maybe more since its heavier now being a multi disc. Do these seem about right. And cam is not a lot bigger only 4 degrees on intake and 6 on exhasust all other specs the same
I'm H/C/I in an A4...TSP stage 2.5 5.3 heads,ported fast 90/90,and cam is a custom 232/238 6xx 6xx 111 on xfi lobes headers were hedman 1 5/8 step to 1 3/4
When it had 3:23 with that set up and a TCI 3500 stall I put down 435rwhp 407rwt
1)Added 3:73 gears and nothing else it whent to 424rwhp
2)I decided to step up to a circle d 5c which is a 4400 stall,and knew I would lose more"dyno" numbers..Figure it to be about 10rwhp,and put me at 414rwhp,but at the same time I added the 5c I moved up my header size to hooker 1 7/8...Figure this would gain me 10 or so more rwhp and put me at around 424-426rwhp..Anyway after the new headers were put in and new 5c converter I now put down 426rwhp..
'dyno" less than I did before but the car feels a ton faster with the gears and 4400stall
Hope this helps ya out
When it had 3:23 with that set up and a TCI 3500 stall I put down 435rwhp 407rwt
1)Added 3:73 gears and nothing else it whent to 424rwhp
2)I decided to step up to a circle d 5c which is a 4400 stall,and knew I would lose more"dyno" numbers..Figure it to be about 10rwhp,and put me at 414rwhp,but at the same time I added the 5c I moved up my header size to hooker 1 7/8...Figure this would gain me 10 or so more rwhp and put me at around 424-426rwhp..Anyway after the new headers were put in and new 5c converter I now put down 426rwhp..
'dyno" less than I did before but the car feels a ton faster with the gears and 4400stall
Hope this helps ya out
