Instant Rebates
800.345.4545
Call Our Support Line
24 Hours / 7 Days a Week!  
FREE SHIPPING!
Same Day Shipping Before 11 PM ET
0
My Cart
0
$0.00
Shop By Vehicle
Shop By
Category
Close Menu
Shop By Vehicle
Top Categories
All Categories

All Categories


Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates
Rebates
Help

AFR - Airflow Research 1690

245cc LSX Mongoose Strip Aluminum Cylinder Heads LS1 / LS2 / LS6 Chevy

AFR - Airflow Research 1690

033-1690

jegs shipping
FREE Shipping
Estimated ship date 09/01/17 if Ordered Today
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
AFR - Airflow Research 1690 245cc LSX Mongoose Strip Aluminum Cylinder Heads LS1 / LS2 / LS6 Chevy $2,619.00
245cc LSX Mongoose Strip Aluminum Cylinder Heads
  • LS1 / LS2 / LS6 Chevy
  • 73cc Combustion Chambers
  • Cathedral Style Intake Port
  • Assembled
  • Sold in Pairs, 2/pkg.

  • AFR - Airflow Research 1690 Details

    73cc Combustion Chambers

    LS1/LS2/LS6 Chevy 245cc LSX Mongoose Basic Package Components
    100% CNC Ported Combustion Chambers
    100% CNC Ported Exhaust Ports
    100% CNC Ported Intake Ports
    Competition 5-Angle Valve Job
    Intake Valve, 2.165'' x 4.915'' o.a.l.
    Exhaust Valve, 1.600'' x 4.907'' o.a.l.
    1.270'' OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650'' maximum lift, max RPM 7000-7200
    7° 1.250'' Titanium Retainers
    7° Valve Locks
    Viton Valve Seals
    Hardened Spring Cups
    Intake Valve Seats
    Exhaust Valve Seats
    Bronze Valve Guides
    LS1/LS2/LS6 Chevy 245cc LSX Mongoose Strip Head Specifications
    Head Torque w/Moly Lube 11mm ARP 70 Ft. Lbs. / 8mm 23 Ft. Lbs.
    Intake Port Volume 245cc
    Exhaust Port Volume 88cc
    Exhaust Port Gasket Fel Pro 375-1440
    Head Gasket Needs a 4.200'' Bore Gasket
    Cometic 033-6845
    Head Bolts & Studs Standard ARP
    Head Bolt Washers Standard ARP
    Shaft Mount Rocker Arms Yella Terra Ultralite p/n 033-6038
    Suggested Manifold LS6 or FAST p/n 244-54039B
    Spark Plug Starting Range AC 41-974 Platinum
    Combustion Chambers 73cc
    Spring Pocket can be cut to 1.525, no deeper.
    Valve Spacing Stock
    Rocker Arms Stock
    Valve Angle Stock
    Flat Mill .006'' per cc

    Specifications:

    Manufacturer's Part Number:
    1690

    AFR's Max Effort Cathedral Port Offering!

    A tremendous amount of time and energy was invested to bring you this 245cc LS1/LS2/LS6 Gen III head that represents the pinnacle in cathedral design bolt-on performance. With over 355 CFM's available, it has intake flow numbers approaching GM's famed (and much larger) LS7 head with much stronger exhaust flow in comparison. This head is AFR's ''take no prisoners'' LSX cathedral shaped offering and its focus is large displacement combinations, like 415-454ci with a minimum bore size of 4.000''. It requires a head gasket bore of 4.200'' or larger and comes standard equipped with lightweight 2.160'' intake valves / 1.600'' exhaust. Another unique feature of this head is that it is ''solid roller friendly'' having been designed and machined to accept larger .375'' (3/8'') diameter pushrods without additional clearancing (in most applications) and comes direct from the factory with 1.510'' spring pockets (Note: Under no condition can these pockets be machined deeper). With an aggressive set-up this head is capable of producing power in the 700HP range while still providing gobs of low and mid-range torque. It is still a factory direct bolt on with standard length valves, stock valve train geometry, and everything in their respective OEM locations. It of course comes standard equipment with AFR's trademark 3/4'' head deck and the same rugged castings found in the rest of the AFR LSX line up. Make sure you're packing lots of displacement to fully realize the benefits that this head can offer you and hang on when its time to go 'Wide Open Throttle'! .

    Installation Notes: LSX valve stem bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.

    245cc LSX Mongoose Strip Cylinder Head Features:
  • 100% CNC Ported Combustion Chambers
  • 100% CNC Ported Exhaust Ports
  • 100% CNC Ported Intake Ports
  • Competition 5-angle Valve Job
  • 245cc Intake Ports
  • 88cc Exhaust Port
  • Bead Lock Intake Valve, 2.165'' x 4.915'' Overall Valve Length
  • Bead Lock Exhaust Valve, 1.600'' x 4.907'' Overall Valve Length
  • PAC Racing Valve Spring: 1.270'' OD Hydraulic Roller Dual Valve Spring, 155 lbs on seat, .650'' maximum lift, Max RPM 7000-7200
  • 7° 1.250'' Titanium Retainers
  • 7° Bead Lock Valve Keepers
  • Viton Valve Seals
  • Hardened Spring Cup
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides

  • Items You Need

    Before you leave us... Receive a free catalog or join our email list

    Sign up to receive our catalog or subscribe to our email list now to see our exclusive email only specials, new products, and offers!

    Request CatalogJoin Email List