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Reply With QuoteThe differnce in the angled holes is the difference from tbi to vortec IIRC. I cant remember which one has angled holes though.
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This is a discussion on ever had to drill the holes on the itntake? within the Performance forums, part of the General Discussion category; ok well i am building a second motor with my buddy well he bought some pro-comp heads...and he is using ...
ok well i am building a second motor with my buddy well he bought some pro-comp heads...and he is using the edelbroke performer tbi...well the the 8 holes on the outside of the intkae lined up 100% but the 4 inner we had to drill the intake hole almost sideways to egt them to fit..it was a pian..in the A$$ why the hell did edelbrock do that to the intake....has anyone elses had to do this..
92 5.9l full roller,fully forged,scatt crank.AFR 190cc heads,Crane 2032cam,nv3500,S2 6 Puck clutch.Hurst Short Shifter,14-bolt,auburn 4.11.Carbed
The differnce in the angled holes is the difference from tbi to vortec IIRC. I cant remember which one has angled holes though.
2001 rcsb Z71 06 clip, lowered, 6.0 LQ9, p&p 241s, cam, PI3600, LPP long tubes, etc. Tuned by TJ of Baker Engineering Inc - SOLD
1989 rcsb 4x4, solid axled, HP44/14ff, 4.88s, 35s/20s
no i knwo vortec holes the heads have both on them.... but the edlbrock tbi intake has angled on the outside 8 and inner four our at a very small angle
92 5.9l full roller,fully forged,scatt crank.AFR 190cc heads,Crane 2032cam,nv3500,S2 6 Puck clutch.Hurst Short Shifter,14-bolt,auburn 4.11.Carbed
It's not the intake, its the heads. Those heads were probably designed for a 1986-later motor. Its common to have to mess with the four inner bolt holes to get them to fit.
1995 350 "Tool Box Injection"
Going 4/6 with 20" Billet Specialties
Originally Posted by SuperStepside
your buddy bought the wrong heads. the angles on the center bolts changed in 1986, along with the 1pc RMS. hogging the holes out like you did works fine, been done MANY times before.
77 Chevy K20 - 80 GMC K2500 (in pieces)
90 Chevy K3500 - 93 Chevy C2500 (in pieces) - 94 Chevy K1500
i did the same thing on my 92. its got a 80s block and heads with tbi intake. i just used rtv and washers and have had no problems:fsc:
2004 chevy 2500hd no mods yet
1992 Chevy 80s 350 block and heads modded for tbi with a comp cam, tbi spacer, pod spacer, custom tune, under drive pulleys k and n air filter, small lift with 285/75/16 tires and custom rims, air bags, and more to come
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