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Author
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Topic: Manley race-flo valves
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ukracer
Gearhead Posts: 166
From: South Wales UK
Registered: Apr 2003
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posted 07-15-2003 04:19 PM
   
I am thinking of upgrading the valves in my '69 351W heads to 1.94/1.60 and as I have to keep the rail rockers (rules) I believe the valves I need are the Manley race-flo stainless (11888 and 11889) which they say are for use with rail rockers. It seems they have a necked down stem for improved flow which is a good thing. Does anybody have anything to say about these valves, either good or bad? Any comments or experiences would be appreciated before I rip into the engine.
Cheers, Martin.
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steve'66
Gearhead Posts: 9489
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 07-15-2003 09:43 PM
Martin,Looks like a good choice to me. 
Titanium would be better, but not worth the price/h.p. ratio.
SteveW
[This message has been edited by steve'66 (edited 07-15-2003).]
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 07-15-2003 09:49 PM
I put some in a set of 289 heads once with bronze guides added for good measure. The heads held up for years in a bracket car. They are still running strong on a boat motor now!------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)full street trim!
DanH
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ukracer
Gearhead Posts: 166
From: South Wales UK
Registered: Apr 2003
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posted 07-16-2003 11:50 AM
OK, thanks for the input guys. The heads were fresh last year and the guides were bronzewalled so I guess I just need to have the seats opened up and get porting again! Thanks, Martin.
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