Heads with MS3?
11-17-2007, 04:37 PM
#24
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I hope this was a typo...My car with stock heads a stock pulley ant stock TB is running in the mid 11's. I am going with those 2.5PRC 5.3 heads and an UD pulley and 90/90 I will expect low 11's high 10's. Also depends on M6 or A4 for the gearing too, with my 373 gear and 4500 stall My RPM's NEVER fall under 5900-6000 shifting at 6900. when deciding the gear stall size makes a difference along with trans type and weather or not you plan on spraying it, I know a lot of ppl like to spray this cam.
11-17-2007, 04:44 PM
#25
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"NHRAFORMULA00" could maybe have some info on this setup, his sig really cought my eye this is impressive.
Ms3 cam,PRC 5.3 heads,Fast 90/90,Yank PT4400,Strange 12 bolt 411 spool,10.56 at 125 mph on a 1.40 60 ft in NEG 150 DA.11.10 .07 433HP-373 TQ-Mustang Dyno,Straightline 3275 LBS
Ms3 cam,PRC 5.3 heads,Fast 90/90,Yank PT4400,Strange 12 bolt 411 spool,10.56 at 125 mph on a 1.40 60 ft in NEG 150 DA.11.10 .07 433HP-373 TQ-Mustang Dyno,Straightline 3275 LBS
11-17-2007, 05:16 PM
#26
Hi fellas. This head and cam combo works very good.The piston to valve clearance is tightbut, and has to be checked!!!!!You can NOT run a thinner than stock head gasket because of the clearance problems, Unless you flyct the pistons.If you flycut then you can run a thinner head gasket too get your quench even better.The reason the heads work well is because of the smaller runner,compared to the ls6 heads, on a 346 ci motor.Dont get me wrong ,ls6 heads are very good also,IMO the 5.3 are a tad better.The stage 1 have stock valves, the stage 2.5 have stainless 2.02 & 1.575 valve for better flow. Give Texas Speed a call,they are very friendly. Just make shure when you do the install,TO CHECK PISTON TO VALVE CLEARANCE. IT HAS TO BE CHECKED !!
