Edelbrock Int/Ex Valve Guide SBC BBC SBF Perf /RPM

Manganese-bronze valve guide (one each) for Performer & Performer RPM heads, except as noted. Edelbrock Int/Ex Valve Guide SBC;BBC;SBF Perf./RPM The Edelbrock #60975 E-Tec Cylinder Heads are replacements for 302, 327, 350 & 400 SB Chevy engines with Vortec-style manifolds. They feature an LT1-style raised runner intake port design for increased air-flow and ultimate performance. Chevrolet:Small-Block Gen I:262 (4.3L)-400 (6.6L);Chrysler:Small-Block LA-Series:318 (5.2L)/340 (5.6L)/360 (5.9L);Chrysler:Big-Block B-Series:383 (6.3L)-400 (6.6L);Chrysler:Big-Block RB-Series:413 (6.8L)-440 (7.2L);Ford:Small-Block:289 (4.7L)-351W (5.8L);Oldsmobile:-:330 (5.4L)-403 (6.6L);Oldsmobile:-:400 (6.6L)-455 (7.5L);Pontiac:-:326 (5.3L)-455 (7.5L)