Small-Block Chevy Heads

Muscle Car Review - - New Products -

The Trick Flow DHC 175 small-block cylinder heads avail­able through Sum­mit Rac­ing Equip­ment are “trick,” all right. From the out­side they look stock, with straight spark plug holes, raised mark­ings on the ends, and op­tional drilled ac­ces­sory holes. In­side, though, the heads fea­ture CNC-ported in­take and ex­haust run­ners, 60cc com­bus­tion cham­bers with blended bowls, 2.02/1.60-inch in­take/ex­haust valves, and a choice of sin­gle or dual valve springs for up to 0.600 inch of max­i­mum lift. Heads come fully as­sem­bled, but it’s up to you to add the stealth paint job. In­for­ma­tion: Sum­mit Rac­ing Equip­ment, 800/230-3030, sum­mi­trac­

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