trap speed and hp? What would you expect a stalled auto LT1 trapping 100mph to dyno? 280? 270? 260? I'm just curious as I dynod only 231 stock and trapped 95 and now I trap 100mph and I am surprised it trapped that high at all. |
Try this calculator. http://www.wallaceracing.com/et-correction.php . There's a bunch more in the stickie on the Drag Racing page. |
Yeah, it's saying 295 based off mph. That's impossible. I didn't gain 65hp from intake, tune, cutout, gears, STALL |
270 275 guessing 280 at the rear wheels |
Stalled autos do not follow the normal hp/ET/trap/dyno/etc formulas as manuals. Dont worry about what it puts down (or even what it traps, to a point). The ET is what is really important, and like you noticed gears and a stall help a LOT, even though they wont help on a dyno or change your trap too much. I agree that you're def not putting down almost 300 with a bolt on stalled auto LT1 :P |
Originally Posted by LSWHO
(Post 10757436)
What would you expect a stalled auto LT1 trapping 100mph to dyno? 280? 270? 260? I'm just curious as I dynod only 231 stock and trapped 95 and now I trap 100mph and I am surprised it trapped that high at all. |
what does the rest of the slip look like? |
Originally Posted by TABBED 5.3
(Post 10761943)
what does the rest of the slip look like? I2----5.494 I3----8.545@79.8 I4----11.136 ET---13.468@99.9 This was my fastest ET, but I trapped 100 hotlapping 5 minutes later (13.53@100.1)
Originally Posted by lt1-xjs
(Post 10761631)
I've never heard of using "trap speed " on a dyno, but rpm will affect your wheel speed. Revving to 5600 rpm on a pull will have a slower speed than if it was revved to 6000 rpm but the hp and tq could remain the same. the General rule of thumb is 1 mph gained from every 10hp so based off of that I gained 50hp, but I don't buy that at all. I just want to know where the 5mph came from. |
are u on slicks or street tires |
Drag Radials |
what time of year did you trap 95 versus when you trapped 100. cooler air can have a big effect on how these cars run. what brand stall are you using? |
With the same mods I currently have in 80 degree weather I was still trapping 98.7 so at most I'd have gained 1 mph from that first stock run. It's a performabuilt 3200 stall. Seems to be pretty tight. |
I trapped 105 untuned with longtubes, ory and flowmaster on stock converter. It put down 271HP and 302TQ with a borla muffler being the only change. |
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