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Complete AssembledPair of
AluminumBig Block ChevyHeads
Square 320cc Intake port
115cc chambers withimproved flow
Exhaust ports raised for enhanced flow
DOMESTIC VALVES,SPRINGS, RETAINERS, GUIDE PLATES and STUDS USED IN BUILDOF HEADS
Will fit 366, 396, 402, 427, 454, 502 and stroker versions of.
Fits Mark IV, V and VI blocks with using correct head gaskets
Stronger Pressure casted Aircraft grade 356A aluminum alloy heat treated to T6 specs.newer process with less porousity and better consistance of port sizing
Harden valve seats
Bronze valve guide
Standard accessory bolt holes
Plus .400 thick deck for severe uses
2.250 intake valves
1.880 exhaust valves
Valves are one pieceforging EV-8 stainless steel alloy
Harden chrome plated stems
Undercut stems powerflow design for improved flow
Fully machined and swirl polished stems
Harden tips NO lash caps required
1.510 Diameter (Dual spring for Hyd. flat tappet)
110lbs at 1.900" installed height
310lbs at 1.300" open pressure(.600 Lift)
Max. lift .600
If your application requires different springs then shown just Email us for more information about this itemand we will quote if price is different CGMMOTORSPORTS@CGMMOTORSPORTS.COM
We machine andassemble all heads in our shop to your application using high quality parts
High temperature Positive viton valve seals for superior oil control
3/8" guideplates high quality heat treated steel
7/16" screw in rocker studs 190,000psi
7 degree chrome moly retainers to match springs
7 degree 11/32" valve locks
Harden spring cups and/or shims
5 angle intake valve seat and radius exhaust seat for improved flow
These Heads flow over 750HP without porting work!!!
Thats over 360cfm at .650 lift
Check out our other cylinder heads and engine kit sales
We are a premier High performancemachine shop with over 20 years in business. All heads are inspected and machine work done in our shop. We DO NOTjust assemble these heads each set is machined andbuilt to the buyers application.Buyer responsible for application and fitment like any HP parts. If you have any question please contact us..
e-mail us with your questions about this item: CGMMOTORSPORTS@CGMMOTORSPORTS.COM
or call us about this item at
International shipping will be quoted just Email us!!!
FEED YOUR NEED FOR SPEED WITH US!!!!!
We are CGMmotorsports in the .com world ~ For more information, see you on the web.
8211 Cloverleaf Dr.
Millersville, Maryland 21108