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

new plenum and runners

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Old Feb 16, 2005 | 02:23 PM
  #1  
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From: berwick pennsylvania
Default new plenum and runners

well,

after hours of sanding and grinding on my old plenum i have nasty lookin pits that just will not come out so, i gave exotic muscle a call and ordered largetube extruded runners and a fully ported plenum both polished up nice and shinny.i am a little disapointed that i could do this myself but it must have been a poor casting that wouldnt clean up, oh well i gave it a shot.anyone else order these from em?
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Old Feb 16, 2005 | 02:34 PM
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I have no data on EM LT runners but would expect them to perform similar to the AS&M LTs. When Vic'89 installed them with his Accel base he picked up over 15chp.

I polished the plenum top for my IROC to a mirror finish, looked at those runners and said..."nah".

What mods do you have?
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Old Feb 16, 2005 | 02:53 PM
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Default mods

Originally Posted by 65Z01
I have no data on EM LT runners but would expect them to perform similar to the AS&M LTs. When Vic'89 installed them with his Accel base he picked up over 15chp.

I polished the plenum top for my IROC to a mirror finish, looked at those runners and said..."nah".

What mods do you have?
protopline 192 64cc 2.02/1.60's .610 springs, tpis torque secrets cam,1.6 comp cam pro magnums,crane hi intensity lifters,comp cams hitech .080 one piece push rods.waitng for em lt runners and ported plenum.these items not on yet.hopefuly this fall, i am in the process of buying a house at the present time. the other half cleared me for the runners and plenum for some stress relief.lol
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Old Feb 16, 2005 | 03:14 PM
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youre gonna need a big base to really see the gains.
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Old Feb 17, 2005 | 09:25 AM
  #5  
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forgot to add have a tpis bigmouth getting opened up to a 1206 gasket so i should be ok
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