At what point do I need a 58TB??
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On The Tree
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Joined: May 2007
Posts: 172
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From: Las Vegas, NV..but originally from Oregon!!
At what point do I need a 58TB?? I already have a BBK 52tb. My engine is going together with the following mods...
stock rebuild LT1 shortblock with ARP rod bolts
Local Ported Heads( LE1 equivelant)
stock intake
1.6 NSA roller rockers
LE 224/230 .596/.574(with the 1.6's) 110 lsa cam
PAcesetter longtubes
will go with #30 injectors
LS1 lid swap
undecided exhaust from headers back..
stock rebuild LT1 shortblock with ARP rod bolts
Local Ported Heads( LE1 equivelant)
stock intake
1.6 NSA roller rockers
LE 224/230 .596/.574(with the 1.6's) 110 lsa cam
PAcesetter longtubes
will go with #30 injectors
LS1 lid swap
undecided exhaust from headers back..
When i did the logging between both a 52 and 58 i gained around 15 at peak airflow on datamaster with the 58. That was even with a stock 52-54mm intake inlet. Give or take when your on the dyno your peak airflow is usually within 10hp for a rough indication. So even if you dont port your intake inlet id say you would still gain 5-10rwhp going with the 58 with or without the intake ported.
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Depends on what rpms you are taking it up to. and how well the head/cam combo flows.
i like to set the bar at 450 hp. If you are making 450 hp and still plan on trying for more a 52/58 is gonna be needed. so that's why I set it there.
i like to set the bar at 450 hp. If you are making 450 hp and still plan on trying for more a 52/58 is gonna be needed. so that's why I set it there.
I'm going to experiment this weekend at the track with a stocker and a 58mm. With my amazingly accurate butt dyno I can tell you on the street the 58 pulls harder down low and the stocker pulls harder up top.
Two things to keep in mind.
1. The 502/502 crate motor has a 48 mm TB.
2. There are a bunch of LT1 Super Stockers out there running way into the nines with a stock TB.
With my amazingly accurate butt dyno I can tell you on the street the 58 pulls harder down low and the stocker pulls harder up top.
As posted i think after any h/c setup you would gain a good amount of power. However with a stockish setup i dont you gain as much. As i had posted earlier up in the setup i gained roughly 10rwhp going from a 52-58 with my setup in my sig below even with the stock 52mm intake inlet. So that being said a modded h/c setup sucking more air and fuel can only make more power with more coming in so its a no brainer as to you making power. Question is 5-10-15rwhp depending on the setup worth the 3-400 new? I found my 58 had alot more throttle responce and but its very sensitive and when at low throttle % it will jurk as its loading/unloading the driveline in my M6 which is VERY annoying.
As posted i think after any h/c setup you would gain a good amount of power. However with a stockish setup i dont you gain as much. As i had posted earlier up in the setup i gained roughly 10rwhp going from a 52-58 with my setup in my sig below even with the stock 52mm intake inlet. So that being said a modded h/c setup sucking more air and fuel can only make more power with more coming in so its a no brainer as to you making power. Question is 5-10-15rwhp depending on the setup worth the 3-400 new? I found my 58 had alot more throttle responce and but its very sensitive and when at low throttle % it will jurk as its loading/unloading the driveline in my M6 which is VERY annoying.