SONNY'S SYMMETRICAL PORT 5" BORE SPACING "PRO SERIES" HEADS (DRAG), COMPLETE RACE READY WITH COMPONENTS, FULLY ASSEMBLED

Race Ready Fully Assembled Heads 5x13 (Drag)
(Picture may show optional equipment. Click to enlarge.)

Description

5" SYMMETRICAL PRO-SERIES FOR DRAG RACING. At Sonny's all head porting is done in-house. We use a state of the art 5 axis CNC vertical machining center, which can produce precision work to programmed "blue print" specs. This unique cylinder head was designed by Sonny's for 500 + cu. in. engines. The intake runners are symmetrical and feature all good runners (runners that direct towards the middle of the cylinder). We offer the heads with Bronze seats and Ampco 45 replaceable drive-in step guides. These cylinder heads is to accommodate 5.000" bore center applications, like IHRA Pro-Stock and Pro-Mod, Pro-Street cars, Tractor and Truck pullers, and Unlimited Marine/Boat engines. Blocks and cranks can be purchased from Sonny's to make-up with this ultimate performance cylinder head.

Price: 8725.00 pr.
✷ Call 434-239-1009 or Contact Us

Specifications

  • 4.750" bore chamber 74-75 cc
  • Intake valve 2.550"
  • Exhaust valve 1.930"
  • Intake flow 610 cfm @ 1.100" With 28" H20
  • Exhaust flow 415 cfm @ 1.100" With 28" H20
  • Intake runner volume 574 cc
  • Exhaust runner volume 336 cc
  • Intake valve angles 5 degree cant x 13 degree incline (rollover)
  • Actual intake square in. 2.08 x 2.66 = 5.53 - 3/4R = 5.05 Drag

Options

Race Ready Fully Assembled Heads 5x16 (Drag) $9,439.50
For questions or additional information, call 434-239-1009 or Contact Us