CR with SR and 219?
#1
Burning Brakes
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CR with SR and 219?
What compression ratio's are you guys running with a 406 SR219 combo? I've got one I'm currently building and I'm going close to 11.0:1 (10.8:1 w/.044" quench) according to intake closing point I'm right at the edge of pump gas! It's got 195 cc AFR Heads.
#2
Le Mans Master
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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21-'22
'23-'24
I think you're fine Juan, I'm at 10.66 with the same combo in a 421 and my octane out here is 91. I think the big thing is to determine if it's a true LPE or one of the knockoff versions which have a 4* advance. My cam is an Erson small base circle which came with the advance, so I had to retard it 4* to regain the true LPE valve events. That did wonders for my dynamic CR. I'm amazed at the idle quality...........it sounds like a stocker almost. Just be sure you install it at 112* and you'll be fine
Edit: My quench is fairly tight at .040
Edit: My quench is fairly tight at .040
Last edited by Caboboy; 05-15-2005 at 10:11 PM.
#3
Race Director
Originally Posted by JUAN J SANCHEZ
What compression ratio's are you guys running with a 406 SR219 combo? I've got one I'm currently building and I'm going close to 11.0:1 (10.8:1 w/.044" quench) according to intake closing point I'm right at the edge of pump gas! It's got 195 cc AFR Heads.
Not that I have a 406 But my 381 has 10.75-1 and I have taken out a head gasket to detination. I now add Av gas to be safe. All's it takes is one bad tank of gas.
#4
My 383 219 combo was 11:1 and like Rich, I had detonation a time or two.
Av gas Rich? That is for higher altitude burning I thought? A little 116 now n then would be fine...but it should be ok for pump gas.
Av gas Rich? That is for higher altitude burning I thought? A little 116 now n then would be fine...but it should be ok for pump gas.
#5
Race Director
[QUOTE=Jay 383]My 383 219 combo was 11:1 and like Rich, I had detonation a time or two.
Av gas Rich? QUOTE]
Yah then I throw some more fuel in it on the PE tables..I think I will get some race fuel to be safe..
Av gas Rich? QUOTE]
Yah then I throw some more fuel in it on the PE tables..I think I will get some race fuel to be safe..