14mm pump preview....
04-18-2010, 01:10 PM
#31
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I did some math today....
....I looked back at the dyno graphs from when I first got the truck and put a lower stall (Goerend) converter in it. Going from a 26% slip rate to a 12% slip rate at peak power (c.62 mph, 3rd gear) netted an extra 19 hp, or a 14% slip rate decrease was worth about 6.5% in power. Moving on to today, that means if I lowered my slip rate to zero from 20% at 514 rwhp, I'd get a 9.3% boost to 561 to the wheels, not really worth to the big change to a lockup trans at this point, not to mention all the added crankshaft rotational weight that a triple disc lockup converter would add, which saps up maybe 10 or 20 hp due to the extra weight.
....I looked back at the dyno graphs from when I first got the truck and put a lower stall (Goerend) converter in it. Going from a 26% slip rate to a 12% slip rate at peak power (c.62 mph, 3rd gear) netted an extra 19 hp, or a 14% slip rate decrease was worth about 6.5% in power. Moving on to today, that means if I lowered my slip rate to zero from 20% at 514 rwhp, I'd get a 9.3% boost to 561 to the wheels, not really worth to the big change to a lockup trans at this point, not to mention all the added crankshaft rotational weight that a triple disc lockup converter would add, which saps up maybe 10 or 20 hp due to the extra weight.
04-18-2010, 01:40 PM
#32
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Location: Quinton, New Jersey (middle of nowhere)
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Well at least if you threw in a Lockup O/D trans you could run a 3.54 D70 and have 10x more options when it comes to LSD/POSI/LOCKER options. Which i'm sure is getting to be a concern since that kinda sucks having no traction.
+ the $$ you'll get back from the 3.07 rear when you sell it.
+ the $$ you'll get back from the 3.07 rear when you sell it.
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