08-03-2017, 03:19 PM | #1 |
pully boost
I have the new style slp tvs 2300 supercharger. how much more boost can I expect from dropping to a 3.4 or a 3.2 pully compared to the stock 3.6 pully that it has now and at what size will I have to change belt size? thanks.
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2014 SS/RS blackwing CAI. LTH. 3inch X pipe exhaust to NPP mufflers. SLP TVS 2300. 1LE strut tower brace. 5.1 short throw shifter. BMR trailing arms. poly cradle mount bushings. 559HP/543TQ
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08-03-2017, 03:44 PM | #2 |
This is a chart for the LSA motor so it won't be exact but it should give you some general ideas.
https://weaponxmotorsports.myshopify...ng-mods-needed |
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08-04-2017, 06:21 AM | #3 |
thanks
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2014 SS/RS blackwing CAI. LTH. 3inch X pipe exhaust to NPP mufflers. SLP TVS 2300. 1LE strut tower brace. 5.1 short throw shifter. BMR trailing arms. poly cradle mount bushings. 559HP/543TQ
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08-04-2017, 09:13 AM | #4 |
Drives: 2023 Camaro SS 1LE on order Join Date: Dec 2014
Location: Bowling green Va
Posts: 293
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a good read for calculating boost after changing your pulleys
https://www.lsxconcepts.com/zl1-cts-.../#.WYSArcsUl7g
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2017 Camaro SS 50th anniversary, I sold it but 2010 Camaro SS, whipple, cam, full bolt ons and full exhaust made 739/656 RWHP/TQ on 93 pump gas
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08-04-2017, 02:47 PM | #5 | |
Drives: 2023 Camaro SS 1LE on order Join Date: Dec 2014
Location: Bowling green Va
Posts: 293
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Quote:
7.5/3.6= 2.08 (crank size/blower pulley size= current pulley ratio) new pulley example 1: 7.5/3.4= 2.20 (crank size/new blower pulley size= new ratio) New pulley example 2: 7.5/3.2= 2.34 (crank size/new blower pulley size= new ratio) assuming you are at about 9 lbs of boost with the 3.6 pulley your new boost would be below 9/2.08x2.20= 9.51 lbs of boost with a 3.4 pulley 9/2.08x2.34= 10.125 lbs of boost with a 3.2 pulley You can also get an overdriven crank pulley that would bring up your boost numbers. I have a ATI 7% OD crank pulley (8" crank pulley) but I think you can also get it in 10% OD (8.5" crank pulley). doing this changes your pulley ratio and will increase your boost level. 8/3.6=2.22 pulley ratio 9/2.08x2.22= 9.60 lbs of boost with 3.6 pulley 8/3.4=2.35 pulley ratio with 3.4 pulley 9.6/2.22x2.35= 10.16 lbs of boost with 3.4 pulley 8/3.2=2.5 pulley ratio 9.6/2.22x2.5= 10.8 lbs of boost with a 3.2 pulley You are pretty safe up to about 13 lbs of boost on a stock bottom end with a good tune. My car has been at 13 lbs of boost for about 130k miles now. it currently has 160k miles on the stock bottom end hope this helps
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2017 Camaro SS 50th anniversary, I sold it but 2010 Camaro SS, whipple, cam, full bolt ons and full exhaust made 739/656 RWHP/TQ on 93 pump gas
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08-04-2017, 03:08 PM | #6 |
wow I didn't think the bottom end would hold up to that much. thanks for all the info.
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2014 SS/RS blackwing CAI. LTH. 3inch X pipe exhaust to NPP mufflers. SLP TVS 2300. 1LE strut tower brace. 5.1 short throw shifter. BMR trailing arms. poly cradle mount bushings. 559HP/543TQ
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08-04-2017, 04:52 PM | #7 |
Drives: 2023 Camaro SS 1LE on order Join Date: Dec 2014
Location: Bowling green Va
Posts: 293
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No problem, good luck. I have a few friends running 13lbs of boost with meth and TVS 2300 making around 680-700 at the tires
__________________
2017 Camaro SS 50th anniversary, I sold it but 2010 Camaro SS, whipple, cam, full bolt ons and full exhaust made 739/656 RWHP/TQ on 93 pump gas
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08-05-2017, 11:19 AM | #8 |
I'm currently making 640 rwhp on my 1LE with an LSA @9.5 psi boost along with a stage 1 pd cam, and full intake/exhaust. Thats vs. 386 hp stock on the same dyno. I only have 65 lb injectors and they're about maxed for my hp level. I've been considering going from a 2.75 pulley to a 2.50 but I need new ID850's for that I think.
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08-05-2017, 04:36 PM | #9 | |
Drives: 2023 Camaro SS 1LE on order Join Date: Dec 2014
Location: Bowling green Va
Posts: 293
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Quote:
__________________
2017 Camaro SS 50th anniversary, I sold it but 2010 Camaro SS, whipple, cam, full bolt ons and full exhaust made 739/656 RWHP/TQ on 93 pump gas
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08-06-2017, 08:19 PM | #10 |
I have the ZL1 pump as my car is a 1LE. I also have the adm fpcm but no BAP. When the car was on Janetty racing's dyno i think Ted had said I was at 87% duty cycle which he wasn't that comfortable with so he recommended ID850's. I didn't have the cash and said I'd hope I didn't have any fuel hiccups. He seemed to think I'd be good to about 700 rwhp with my 2.50 pulley and ID850's but after that I'd need a different pump setup. I've considered a BAP but I figured I should probably do ID850's first and only get a BAP if I was losing fuel pressure on the top end.
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08-06-2017, 08:28 PM | #11 | |
Quote:
http://www.lingenfelter.com/PDFdownloads/L460111410.pdf |
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