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Are the accessory mounts the same on pre '87 heads and '87+ heads?

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Old Jan 23, 2003 | 09:02 PM
  #1  
My90Iroc's Avatar
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From: E. Patchogue, NY
Car: '90 Iroc
Engine: 305 TPI
Transmission: 5 spd
Are the accessory mounts the same on pre '87 heads and '87+ heads?

Basically what is says, are the accessory mounts the same on both sets of heads? If so that would make the only differences the centerbolt and perimeter bolt valve cover setups and the angle of the middle bolts for the intake manifold right?
I want to know if I build a motor with the Stealth Ram could I get pre '87 heads and still mount my current serpentine accessory setup from my '90 motor? Thanks.
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Old Jan 23, 2003 | 09:15 PM
  #2  
8Mike9's Avatar
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Joined: Jul 1999
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
The actual accessories are differentt, but the bolt holes to mount them should be the same from the early '70's on up.

You're correct, 87 and some 86's, up up, use the newwer style angles...could be that the HSR is ready for both???? Not sure, by Accel Base works for either (Accel claims)
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Old Jan 23, 2003 | 10:08 PM
  #3  
dimented24x7's Avatar
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
youll need to drill + tap one hole on the pass side head to accomodate the bracket. Otherwise, you good to go.
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