I have a pair of 305 TPI heads that came off my 87 Trans Am with the 305. Will these 305 heads work for any 305 V-8 TBI or Carb. with center bolt valve covers and the 87 up intake bolt pattern. I'm not sure if the TPI intake is the only intake that will work on these heads. Thanks for any help. Jason

 

The heads will work with any intake manifold that has the correct bolt pattern for the 87 and later heads.

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1988 Formula 5L/5sp 3.45 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT.
Best ET street tires 13.85
Best 60 FT street tires 1.930
Best MPH street tires 99.29

 

Check the pushrod area and see if the heads have machined-in guideplates. Later model centerbolt heads require self-aligning rockers whereas early models do not. Your '87 heads probably do not.

I ported a set of '88 centerbolt heads, and installed them on my '84 two-piece L69 block. In addition, I used an early Edelbrock Performer manifold. I had to enlongate the center holes in the Performer manifold to attach the intake bolts, but I did not do anything other than enlongate the holes. There are no vacuum leaks, cooland leaks, or anything unnatural. It worked fine. So, for the most part, you CAN mix and match, as long as you stay aware of teh aligning versus non-aligning rocker arms.

Again, look at the heads and where the pushrod passes through the head casting. If you see a big hole there, then you need self-aligning rockers. If you have a small hole (or slot) which is within .015" the diameter of the pushrod, then you do not need self-aligning rocker arms.


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Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Turbine Technologies 2500 stall converter, underdrive pulleys, Crane Hi-6 & more.
1.05g skidpad verified.
New best E/T! 14.039 at 100.82 MPH in 41 degree air at Stanton, Michigan.