What are the specs on the L98 vette heads, and what are the specs of the ZZ4 heads. I want to see the two specs side by side to compare and truly judge my chances of passing NJ emissions... Thanks

What about the differences between the L98 F-Body heads and the L98 vette heads?

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***The driver formerly known as 89IROCZ***

1989 Chevrolet Camaro IROC-Z
350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back (currently no muffler, sounds on webpage) 3.23 Posi rear, Hypertech chip, Under-Drive pulleys, AFPR, K&N's, moddified MAF, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)

Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Sphon SFC and LCA

1989 Chevrolet Celebrity Eurosport
2.8 MPFI, no mods
225,000 miles and still ticking!

More info, pictures and sounds (of the IROC) available on my webpage: http://go.to/iroc-z

AOL IMer: GPA 0point0

[This message has been edited by L98IROCZ89 (edited June 21, 2001).]

[This message has been edited by L98IROCZ89 (edited June 21, 2001).]

 

I think they are the same. I am not sure but they have same chamber size and runner size and same intake. The zz4 heads have upgraded valve springs I think.

Brian

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1989 Camaro RS

305 .030 over Hydro Pistons
Vortech heads milled to 58cc...Performer RPM intake....LT4 cam..Crane Gold rockers...FastChip custom chip...ALum. Driveshaft...3.73 gears with Posi...underdrive pullys...Rebuilt 700R4 with Vette Servo and B&M shift Kit...MSD ignition...A/C Delete No SMOG junk....1997 SS leather interior...B&M Shifter... Ultimate TBI mods...14X3 K&N open Element Non-Drop...Hooker headers....3" exhaust with Flowmaster Cross flow 16X8 Wheels from 97 RS Spohn LCA's Spohn Panhard Bar..LETS PLAY FORD!!

www.geocities.com/feltsb

 

I agree. I beleive they're the same heads, essentially. Both aluminum. 58cc chambers. Same bolt pattern, same runners, same valve sizes, etc.