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#1
11-28-2009, 06:47 PM
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kre d-port pushrod clearance
I been working on assembling my motor,I'm using a set of kre d-ports cnc'd by sd performance. I want to bolt the heads down to the block but I don't have my rocker arms yet so I'm not sure if I need to do anything to clearance the pushrod holes,I don't want to find out AFTER they are torqued down that they need to come back off and be ground on. I'm running a solid roller cam with .370 lobe lift/.610 valve lift w/1.65 rockers,typically does anything have to be done to the kre d-ports at this lift as far as pushrod to guide clearence,thanks,Smitty
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#2
11-28-2009, 09:01 PM
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Om my KRE sd heads I was running .658 lift with my H.S 1.65's and didn't notice any problems..
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#3
11-28-2009, 09:54 PM
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Ditto what Darby said. KREs come pre-clearanced for 1.65 rockers.
Jim
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65 Catalina sedan. Allen Thomas Performance 495. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3.50 Moser/Ford rear. F-Glass front bumper by son Rob, rear by the old man and joint effort for trunk lid. 3950# w/driver. Best of 9.5761/139 on 175 shot, 6.01 /114 in 1/8. |
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#4
11-28-2009, 10:48 PM
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Do you have the correct length pushrods?Like others have said no problems with 1.65 rockers.
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#5
11-29-2009, 07:00 PM
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Quote:
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#6
11-29-2009, 11:00 PM
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My KRE's by SD were also clearanced for the 1.65 rockers. My total lift is .61, similar to yours. If you have any doubt, call SD...If you didn't buy directly from SD, there's a number stamped on the front surface of the heads. I think they can identify the work done on those specific heads by that number.
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#7
11-30-2009, 04:49 AM
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I was just wondering if you have measured for pushrod lift.It is just easier to swap to checker springs with the heads off.
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