AFR 245cc LSX Cylinder Heads, 64cc Chambers, No Parts
Description
THE BEST Cathedral Port Head Available with 64cc Chambers!
A tremendous amount of time and energy was invested to bring you our 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 our take no prisoners LSX cathedral shaped offering and its focus is large displacement combinations (415 - 454 CID) 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 pushrods without additional clearancing (in most applications) and comes direct from the factory with 1.570 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 700 HP range while still providing gobs of low and midrange 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 this head can offer you and hang on when its time to go WOT!
Basic Package Components | Part # |
100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports Competition 5-angle Valve Job |
Specifications, Features, and Optional Supporting Components |
Head Torque | 11mm ARP 70ft. lbs. w/ Moly |
Head Torque | 8mm 23ft. lbs. w/ Moly |
Exhaust Port Gasket | GM #12558573 |
Head Gasket, Cometic 4.200 .040" | AFR #6845 |
Head Studs (04+), ARP 234-4317 | AFR #6335 |
Head Bolts (97-03), ARP 134-3609 | AFR #6330 |
Head Studs (97-03), ARP 234-4110 | AFR #6331 |
Head Bolts (04+), ARP 134-3610 | AFR #6334 |
Suggested Manifold | FAST 90mm, 92mm, or 102mm |
Intake Port Volume | 245cc |
Exhaust Port Volume | 88cc |
Combustion Chambers |
65cc or 73cc
|
Spring Pocket |
1.150 O.D /Can be cut to 1.525, no deeper
|
Head Bolt Washers, Manley | AFR #6320 |
Intake Port Dimension | 3.315"H x 1.145"W x 11/32 top 13/32 bottom |
Valve Angle | 15° |
Flat Mill (Milling options available) | .006" per cc |
Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match AFR heads.
Note: Milling head deck will affect flow numbers.
Details
- AFR 1681
- AFR 1681
- Air Flow Research
- New
Categories
Shipping Information
- Item Requires Shipping
- 65.0 lbs.
- W12.0000” x H12.0000” x L24.0000”
- Free Basic Shipping
- This item ships in its own box.
- FREE continental USA ground shipping on ALL AFR Cylinder Heads
- TRE Performance Difference
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