| AD CATEGORY :: Engine Parts :: Heads |
18 degree GM heads titainium valves,jesel
jesel rockers,ported,matching intake
This cylinder head for competition small-block V8's represents a significant performance improvement over the Phase 6 head. The design moves the valve angle to 18º from its previous 23º. The valve centerlines are relocated .275" toward the intake manifold which positions the intake and exhaust valves on the centerline of the cylinder bore. This minimizes shrouding at high lift and also allows for the installation of larger valves (up to 2.20"). The valve centerlines are also shifted laterally to provide proper valve clearance with a variety of cylinder bore and valve head diameters. The intake runners are now raised, and floors of the intake ports are 1.220" above the deck surface. At valve lifts above .600", this configuration produces superior airflow. Shallow, wedge-shaped combustion chambers achieve high compression ratios with small piston domes. Spark plugs are closer to the center of the cylinder bore and shifted toward the top of the chamber, which improves flame across the chamber and reduces spark advance requirements. Exhaust flow is also increased because ports are .450" higher and .240" wider at the exhaust manifold flange than the Phase 6 Bow Tie head. I also have matching 4150 Gm intake that will go along with these heads.
This item is USED
Trades ACCEPTED: Trade for BBC 454 or bigger
Payment options:
![]() |
![]() |
cash |
Item Location: BLUE SPRINGS, MO Get Directions
Ad posted by: johnmawinc (#121264)
RaceSpace Profile: NONE [REQUEST]
Member Since: 2006-03-30
Number of Honor Payments: 2
Average Accepted Sale Price: $2,225.00
Average Honor Payment: $22.25
Phone Number: 816-520-8066


Questions & Answers about this ad
Question:
Thanks. Let me know what the valve sizes are. On [2008-09-28 20:59:22] johnmawinc wrote: > > > On [2008-09-28 16:29:40] hotfingrs wrote: > > What's the rocker ratio?? > 1.6 exhaust 1.7 intake. Im gonna take the valves to work tomorrow and measure them.
Answer:
On [2008-09-29 00:32:42] hotfingrs wrote: > Thanks. Let me know what the valve sizes are. > > On [2008-09-28 20:59:22] johnmawinc wrote: > > > > > > On [2008-09-28 16:29:40] hotfingrs wrote: > > > What's the rocker ratio?? > > 1.6 exhaust 1.7 intake. Im gonna take the valves to work tomorrow and measure them. > ex 1.65 in 2.180 length 5.54
RESOURCE LINKS











