Description: Air Flow Research 227 LT1 performance/racing cylinder heads. About as much done to these heads as can be to a 23-degree head. Professionally ported by Indy Cylinder Head to flow 326 CFM at .600 on the intakes and 248 at .600 on exhaust. Big improvements on the exhaust side of these heads by the items below that were done and better than a normal competition port job on the intake side. 1. Titanium 2.10 intake valves, 11/32 stems, .100 long2. Inconel 1.60 exhaust valves, 11/32 stems, .100 long3. Copper seats for intake and exhaust4. 1.580 valve spring pockets5. 57 cc chambers6. Step washers machined into heads for all head bolts to run big block chevy nuts for increased holding/clamping force. 7. Stahl header bolt pattern to allow improvements on exhaust flow8. Water boss port in-between the center two exhaust valves to solve the heat issue in this head design9. O-ringed for copper head gaskets. Have also seen the O-ring setup used with some standard composite head gaskets also to improve cylinder sealing. Or O-rings can be removed. 10. Heads were run on an LT1 car that weighs 4500 pounds. Quarter mile trap speed was 157 MPH which calculates to over 1400HP made with these heads.
Price: 2999 USD
Location: Fishers, Indiana
End Time: 2024-12-23T17:58:02.000Z
Shipping Cost: N/A USD
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Item Specifics
Returns Accepted: ReturnsNotAccepted
Brand: Air Flow Research 227
Manufacturer Part Number: 1126
Performance Part: Yes
