Blower guys: Who is running more than 7 lbs on stock bottom end?
10-25-2004, 09:10 AM
#23
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Originally Posted by NA$TY-TA
Now watch out for the A4 ..... rebuilt mine twie aqnd this time it lasted 2700 miles... they just cant take the HP.
10-25-2004, 01:26 PM
#24
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cast pistons 
If there is any detonation, they crumble. It is a bit rich for my safety, but it's not washing the cylinders rich 
I really should hop on a dyno and see if going with less timing but a little leaner makes more power. I doubt it would though.
If there is any detonation, they crumble. It is a bit rich for my safety, but it's not washing the cylinders rich I really should hop on a dyno and see if going with less timing but a little leaner makes more power. I doubt it would though.
10-25-2004, 02:45 PM
#25
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Originally Posted by Ryan23silverado
12psi with ARP head studs, MLS head gaskets, 10.8-11.2:1 afr and 15* advance. It can be done quite easily
As noted earlier with my setup, P1SC with 2.8" , so I'm running 12 psi on stock heads (2001), I get 2# at 1800, 5# by 3K RPM, 10# at 5500, using 1.8 slp rockers, 1 7/8 grott ceramic coat long tubes with stock 3" Firehawk exhaust, 255lph inline walbro, 36# (slp stock type injectors, at pressure they are equivalant to running just over 42#), custom tuning by me (LS1 Edit - SD type MAfless tune) other than that everything else is stock. Running 17 degrees timing at 11.5:1 for safety in the heat in Palm Beach. No problems other than startup piston slap BS, (but that's another story)
I start running leaner at 5200 due to pressure loss at that volume ( drops to 55#, I know I need more fuel pump( I see DP in my future ), but ever since my Impala SS was stolen a couple months ago the Hawk has become my daily driver so I won't race it until the new 402 and fuel goodies get put in for more piece of mind. So for now I just don't go past 5K rpm. ( well ok I did a couple of times but I pretty much almost never do it anymore :wink :wink
10-26-2004, 02:47 AM
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Originally Posted by 10thanvhawk
How thick are your MLS? you probably added a few more CC to your head volume with those.
I just posted that in regards to the Bottom End of these motors taking 12 psi.
-like the topic said 
10-26-2004, 07:39 AM
#27
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Originally Posted by Ryan23silverado
You are right. Well actually I'm running a 64cc chamber with those mls gaskets too. Approx 9.0:1 compression ratio now.
I just posted that in regards to the Bottom End of these motors taking 12 psi. -like the topic said
I just posted that in regards to the Bottom End of these motors taking 12 psi.
-like the topic said 
10-26-2004, 10:56 AM
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Originally Posted by LSs1Power
Where did u get the MLS gasket guys? And how much would it drop the C/R on a stock engine?
10-26-2004, 02:03 PM
#30
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2002 Z06, cam, full bolt ons, meth injection, 9 psi stock heads and shortblock. 12.0 AF, 25 deg timing with the meth inj. 617 rwhp 507 tq. No worries with 7 psi, thats just getting started. 
(by the way, customer car, not mine, but applicable to the thread at hand)
(by the way, customer car, not mine, but applicable to the thread at hand)
