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Discussion in '1974 Specific' started by vernonwright, Sep 25, 2013.
What makes this car so spical. Do they have big valve heads what is it
Yes the 74 z28 has the big valve heads, It was the last year for it ending the z28 muscle car engine era in the early 70s. Also it had a big change in the exterior body styling and adding the big bumpers while retaining the unique 1970 to 74 back window.
This guy says because mine has ac it is not a real z28 every thing on mine matches and comes
Back. To +
Z28. If I get the info again will some one check it for me thank you vernon
I thought it was because of the small back window??
Air conditioning became an option beginning in 1973 when the engines were built with hydraulic lifters instead of solids from previous years.
Yes, it had the big-valve heads, but the casting was the 882, not the greatest by any means. I sold the heads off of my car back in the mid-1990s, and they had 2.02/1.60s.
See Sean's thread
1974 Camaro uniqueness
Your vin should have a " T" in it , if it was a factory Z28 optioned car......pretty easy to check
fYI..The early 882 heads ...used in 1974 ....were still the same good casting , the exhaust webbing passages were the same thick ones as previously. These didn't crack , compression was still same 9:1 as in 72 , they were fine for the technology of the day.
The latter 70's corvette L82 heads were the poor ones ....casting changed many cracked
The 74 " special preformance engine Z28 " had 4 bolt mains , forged crank and pink rods and( I think) forged aluminum pistons . It only lacked adequate compression . It was a really stout foundation . BTW my 73 Z28 has A/C and it's real
Talking performance-wise, not casting-wise.