185cc Aluminum Small Block Chevy Cylinder Heads
Technical Specifications and Recommended Components:
Combustion Chamber - 72cc
Weight - 55.00 lbs
Intake Runner - 185cc
Exhaust Runner - 62cc
Intake Valve Size - 2.02"
Exhaust Valve Size - 1.60"
Max. Valve Spring Lift - .575" Hydraulic Flat Tappet
Spring Pressure - Closed 115 lbs. @ 1.800", Open 315 lbs. @ 1.225"
Valve Seal Material - Viton
Valve Guide - Manganese Bronze
Retainer Material - Steel
Valve Job - 5-angle
Head Bolts - ARP 070-134-3601
Valve Spacing - OEM
Valve Seats - Hardened Steel
Intake Gasket - Fel-Pro 375-1206 or 375-1266
Exhaust Gasket - Fel-Pro 375-1404
Head Gasket - Fel-Pro 375-1004 or 375-1094
Spark Plug - 750" Reach Gasket Seat
I want to know if these heads are recommended for roller hydraulic lifters. The springs look close to the Comp Cam 986-16's recommended for the retrofit cam, 12-422-8 I'm using. (315 lbs. vs 322 lbs.) but the Comp Cam springs are 1.430" O.D.
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