C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Boost question - need input or help

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Old Oct 19, 2007 | 11:40 PM
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arlockstedt
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Default Boost question - need input or help

I'm running 12-15lbs boost on my built lt4 and was wondering that sence i stepped up the boost, do I need to upgrade the bypass valve or is the stock one with the vortech kit ok? advantages and disadvantages?
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Old Oct 20, 2007 | 01:09 AM
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I'd step up to the vortech mini race one, minimum. It bolts right onto the flange of the discharge tube on the vortech kit. You can pick one up for about $200.
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Old Oct 20, 2007 | 01:12 AM
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thanks for the input.....can u get me a link to the right part you think i should look into? i have found so many different vortech ones.....
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Old Oct 20, 2007 | 03:32 AM
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http://www.vortechengineering.com/pr...p=25&cat_key=4

They used to call it the mini race bypass. It flows 320 cfm @ 10psi. I ran one with my t trim setup. What head unit are you using? This bypass comes standard equipment on the mustang fox body t trim high output kit.

If you're using anything bigger than a t trim or even spinning the t trim hard, you may want to even get a mondo or the b57. There really aren't any bad effects to having too much bypass. Just impeller bearing damage from having too little. FWIW, I run a procharger red race bypass on my ysi setup and it's good to about 2000 hp.
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Old Oct 20, 2007 | 08:07 PM
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Originally Posted by qwiketz
http://www.vortechengineering.com/pr...p=25&cat_key=4

They used to call it the mini race bypass. It flows 320 cfm @ 10psi. I ran one with my t trim setup. What head unit are you using? This bypass comes standard equipment on the mustang fox body t trim high output kit.

If you're using anything bigger than a t trim or even spinning the t trim hard, you may want to even get a mondo or the b57. There really aren't any bad effects to having too much bypass. Just impeller bearing damage from having too little. FWIW, I run a procharger red race bypass on my ysi setup and it's good to about 2000 hp.
I'm running a V-1 setup. 8 rib conversion with the modified brackets for better belt grip, with a custom inlarged crank pulley. I was just wondering if the stock unit would let out or leak some of the boost under the higher 12-15lbs pressure.
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