Pulley dyno numbers??

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Dec 23, 2004 | 12:00 AM

chevysrule94

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Pulley dyno numbers??

Hey guys, what were your gains from an underdrive pulley? which do you reccommend? Just want to see if it's worth it.

Matt

Dec 23, 2004 | 01:25 AM

jrp

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From: Valencia, Ca

.1-.2 off your e.t and 10-12rwhp.

Dec 23, 2004 | 08:23 AM

No Juice

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From: Minnesota Corn Fields

Hey jrp how about a sticky for pullies? common brands with pros and cons for each or just the differences. Just something I was thinking about with all the pulley threads lately

Dec 23, 2004 | 09:23 AM

chevysrule94

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Yea, which pulley do you guys reccommend.

Dec 23, 2004 | 10:01 AM

WS-Sick

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From: The point of no return...

Quote:

Originally Posted by jrp

.1-.2 off your e.t and 10-12rwhp.

Is that what you gained personally or is that what you have come up with from various results of others? I still need to get a pulley and ported TB and I was wondering how much it would help.

Dec 23, 2004 | 10:57 AM

30th t/a

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From: Butler, PA

get a ASP unerdrive pulley.

Dec 23, 2004 | 08:25 PM

jrp

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From: Valencia, Ca

Quote:

Originally Posted by WS-Sick

Is that what you gained personally or is that what you have come up with from various results of others? I still need to get a pulley and ported TB and I was wondering how much it would help.

i have an asp pulley but no verifiable results from it. the .1-.2/10-12rwhp is about average gains i've seen over the years.

pulley and TB is ~15-18rwhp

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Dec 23, 2004 | 09:27 PM

chevysrule94

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Wow!!! I never thought a pulley would do that much!!! I put an underdrive pulley on my LT1 car, and all it did was mess up my idle. Thanks, for everyones input.

Dec 24, 2004 | 10:32 AM

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Ryan02SS

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I have no verified dyno results to show but after I installed my ASP pulley I immediately noticed a faster revving engine along with better throttle response. It's one of those little need to have mods that works really well in conjunction with others. I noticed a way better gain from my home ported throttle body especially at higher rpms.

Dec 24, 2004 | 11:50 AM

#11

chevysrule94

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Man, I have a Spec 14lb Aluminum Flywheel too, I noticed a hige difference in how fast it revved when I installed it. The first few times I got on it I hit rev limiter on accident...I cant immagine it revving any faster....I'm definitely getting a pulley now.

Dec 24, 2004 | 03:25 PM

#12

tomss99

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From: south jersey

oh **** i got a ported TB and asp pulley now.... before the mods i was at 393.77 rwhp...maybe ill break 400 untuned woohoo!!

Dec 24, 2004 | 03:29 PM

#13

seabirdak

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hate to burst your bubble but ported TB isn't that good of a mod, and people acutally lose hp, best just to buy a bigger one

Dec 24, 2004 | 03:43 PM

#14

jrp

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From: Valencia, Ca

Quote:

Originally Posted by seabirdak

hate to burst your bubble but ported TB isn't that good of a mod, and people acutally lose hp, best just to buy a bigger one

uh, right...

i've seen plenty of ABA test to prove that a stock sized ported TB is worth 8-12rwhp.

its the BBK 80mm and the like that seem to loose power or not gain much, go figure.

Dec 24, 2004 | 03:58 PM

#15

LS1_PNYTAMR

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ive heard atleast 3 from a tb and 8 on a cam/head car min. man i think i might get one of the asp underdrive pulleys.. i could use a tenth and 10 hp before i do a cam thats for sure!

Dec 28, 2004 | 03:56 PM

#16

riceyum

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From: Ft. Bragg

I cut a tenth and gained 8 rwhp not bad for a benjamin on ebay

Dec 28, 2004 | 04:36 PM

#17

davered00ss

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I gained nothing with the ported TB from Texas Speed.

Dec 29, 2004 | 03:34 AM

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BLASTER

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From: bridgwater, nj

My old dyno thread...
https://ls1tech.com/forums/dynamometer-results-comparisons/237579-before-after-pulley-install.html

Dec 30, 2004 | 11:14 AM

#19

equandt

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Quote:

Originally Posted by Mike98WS6

I got 10 rwhp from the ASP pulley.

Me too, 10 HP on the nose.

Dec 30, 2004 | 04:53 PM

#20

slow trap

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i was thinking of getting one but i'll have to get the overdrive alt. pulley because of the 15s in the trunk.if i can gain anywhere near 10 rwhp i'll be happy.

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Pulley dyno numbers??

Pulley dyno numbers??

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