feature list
- 5" SYMMETRICAL PRO-SERIES
•4.750” bore chamber 74-75 CC
• Intake valve 2.550”
•Exhaust valve 1.930”
•Intake flow 580 cfm @ .900” w/28”
H2O
•Exhaust flow 407 cfm @ .900” w/28”
H2O
• Intake runner volume 574 CC
• Exhaust runner volume 236 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
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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 Ductile 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.
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