screamin eagle heads
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Cruiser
Joined: Apr 2007
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screamin eagle heads
ive got screamin eagle heads on my newly aquired 99 roadking. its got the 95" bigbore setup. not sure yet what cams. my question is about the heads. does anyone know what lift these can handle, what size valves are in them, and what they flow? anyone have info would be great. thanx
Road Warrior
Joined: May 2006
Posts: 1,479
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From: SoCal
The SE heads of this era list .575 max lift. Definitely not for use out-of-the-box without work, IMHO. Here's some info:
http://www.baggersmag.com/tech/0205h...ead/index.html
PN 16952-99B: We’ve combined the proven Screamin’ EagleŽ valve train components and innovative port shapes from the EvolutionŽ 1340 cylinder heads with the Twin Cam 88Ž engine “bathtub” combustion chamber to create a cylinder head that really performs. These heads offer a bolt-on compression ratio of 9.5:1 for a Twin Cam 88Ž (1450) and 10.0:1 for a Big Bore Twin Cam (1550). Combined with forged high compression pistons, both 1450 and 1550 engine configurations would achieve a 10.5:1 ratio. Use of Screamin’ EagleŽ spark plugs P/N 32320-91 when flat-top pistons are used or P/N 32321-91 with high compression pistons is recommended. Best performance can be obtained by combining with one of HarleyŽs Screamin' EagleŽ valve spring can accommodate up to .575" valve lift camshaft kits. Heads are machined to accept Compression Release P/N 29298-02.
* Caution: Screamin’ EagleŽ Adjustable or Perfect Fit Pushrods are required for installation. Do not use high compression cast pistons with Screamin’ EagleŽ Twin Cam 88™ Performance Cylinder heads. Failure to comply may result in engine damage. For Race Application Only.
http://www.baggersmag.com/tech/0205h...ead/index.html
PN 16952-99B: We’ve combined the proven Screamin’ EagleŽ valve train components and innovative port shapes from the EvolutionŽ 1340 cylinder heads with the Twin Cam 88Ž engine “bathtub” combustion chamber to create a cylinder head that really performs. These heads offer a bolt-on compression ratio of 9.5:1 for a Twin Cam 88Ž (1450) and 10.0:1 for a Big Bore Twin Cam (1550). Combined with forged high compression pistons, both 1450 and 1550 engine configurations would achieve a 10.5:1 ratio. Use of Screamin’ EagleŽ spark plugs P/N 32320-91 when flat-top pistons are used or P/N 32321-91 with high compression pistons is recommended. Best performance can be obtained by combining with one of HarleyŽs Screamin' EagleŽ valve spring can accommodate up to .575" valve lift camshaft kits. Heads are machined to accept Compression Release P/N 29298-02.
* Caution: Screamin’ EagleŽ Adjustable or Perfect Fit Pushrods are required for installation. Do not use high compression cast pistons with Screamin’ EagleŽ Twin Cam 88™ Performance Cylinder heads. Failure to comply may result in engine damage. For Race Application Only.
Last edited by Firetender; Jun 10, 2010 at 12:09 PM.
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