1995 Lightning Shortblock - Piston to Valve Clearance w/2.02 valves??? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 11 Old 11-19-2004, 01:21 PM Thread Starter
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1995 Lightning Shortblock - Piston to Valve Clearance w/2.02 valves???

A buddy of mine has a 95' factory lightning shortblock with the stock dished pistons. Looking to install:

AFR 185cc's w/2.02/1.60 valves
CompCam XE274HR 224/232 @ .050" .565"/.574" 112LC

Will I have piston to valve clearance issues with the above setup? I notice the pistons have a huge dish but does that disk encompass the area where the 2.02 valves would be extended too?

Any issues running this cam in that block?

Ryan

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post #2 of 11 Old 11-20-2004, 09:42 PM
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Ask the guys over at NLOC.net. You will get more people that will help you out..


1979 F150 351m
1994 Cobra
2012 5.0 6 speed
2005 Harley Night Train
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post #3 of 11 Old 11-22-2004, 07:16 PM
 
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He will have to fly cut the pistons to a small degree, the dished area does not make up for the valve position. I am actually trying to figure out how much cam I can use to get by without fly cutting the pistons and I am positive that if I use a cam that is.496/.520 they will have to be fly cut 0.100 deep.

good luck!
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post #4 of 11 Old 11-24-2004, 05:59 PM
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On My L motor I have 64cc chambers with 2.20 1.60 and 1.6 rockers and I didn't cut the pistons. If you have smaller chambers lke 54cc I would do the clay test first
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post #5 of 11 Old 11-26-2004, 02:18 AM
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the pistons have tons of clearance, as long as the cam isn't huge lift and lots of duration you will be ok

1994 Lightning, AFR185's, Edelbrock RPM intake and Jay Allen cam.
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post #6 of 11 Old 11-28-2004, 10:19 PM
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I used the same heads with Compcam magnum #266HR and had no problems and lots of piston to valve clearnce. Jeff
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post #7 of 11 Old 11-28-2004, 11:05 PM
 
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How much lift does Compcam magnum cam have and how did you degree the cam for your engine?

thanks!
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post #8 of 11 Old 12-02-2004, 08:42 PM
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my cam has .530 lift with tons of clearance left

1994 Lightning, AFR185's, Edelbrock RPM intake and Jay Allen cam.
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post #9 of 11 Old 12-08-2004, 05:18 PM
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The lift is 533.the cam was put in straight up .
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post #10 of 11 Old 12-08-2004, 05:42 PM
 
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Hey thanks for the info, I actually decided to go with different heads so this question is moot for me at the moment. Whats wierd is that I read an article in one of the 5.0 buildup books about a 5.8 build for the owner of E-brock going into a 40 ford sedan and in the article they tell that the heads which had the same size valves but they were E-brock head and not World product heads like have and they show them fly cutting the stock pistons? Wonder why? they also say that the cam was degreed straight up. Which would make one assume that the valves would interfere, not to mention that the cam was not all that large, it was certainly not bigger than the FRPP Bcam..

Ben

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post #11 of 11 Old 12-09-2004, 09:34 PM
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Duration is as important as lift as far a clearance goes because of the relationship of where the piston is in the bore vs. valve timing. The only way to know for sure is to clay it well not the only way but the easiest on parts.
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