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Small block Valve to piston clearance?
#1338061
11/19/12 07:03 PM
11/19/12 07:03 PM
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Joined: Jul 2009
Posts: 237
Redding,CA USA
440charger500
OP
enthusiast
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OP
enthusiast
Joined: Jul 2009
Posts: 237
Redding,CA USA
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Finishing up the 340 and got the cam degreed in @ 106 and heres the P-V clearances .085 exhaust & .092 intake with 0 lash, cam calls for .014-.016 lash. To do any more we are going to have to buy some cam keys or a timing chain with more adjustment. What do you guys think?
Engine details
340
eddy heads
Lunati 60442 solid cam
.586 ex .566 in
@ .050 251-259
Last edited by 440charger500; 11/19/12 08:03 PM.
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Re: Small block Valve to piston clearance?
[Re: 440charger500]
#1338062
11/19/12 07:05 PM
11/19/12 07:05 PM
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Joined: Aug 2007
Posts: 498
El Dorado Ca
65signet
mopar
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mopar
Joined: Aug 2007
Posts: 498
El Dorado Ca
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Thats a little tight on exhaust, street or strip motor?
1965 Plymouth Barracuda 273 M/SA
1970 Plymouth Duster 360/904 10.60s with J heads
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Re: Small block Valve to piston clearance?
[Re: 440charger500]
#1338064
11/19/12 08:31 PM
11/19/12 08:31 PM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Solid or hydraulic? Roller or flat tappet? RPM range? Spring pressures?
I've run less with a solid flat tappet with 440 PSI over the nose with no issues. You could move the cam around a little to gain some more exhaust clearance, you can run less on the intake but that doesn't look bad to me.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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As long as you have decent spring pressures 
My definition of decent spring pressures are 120Lb + on the seats and 300 lbs + opened, I shoot for 150 to 170 lbs on the seats and 350 to 375 lbs opened on a solid flat tappet cam that the motor will be shifted before 7500 RPM with stock type valves 
