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05-11-2006 05:44 AM #1
CHR Member
- Join Date
- Oct 2005
- Location
- Columbus
- Car Year, Make, Model: 78 F-100 & 85 S10
- Posts
- 206
Thanks guys. I am considering decking but hate to pay the cost for less than 10hp.What I have is a silvolite piston with 1.779 compression height+1.50 which is half the stroke,(3.00" stroke 283 motor),+5.7 rod length= 8.979. Subtract that from sbc 9.020 deck height and I come up with .041 in the hole. Using the compression calculator I get about 8.821:1 static,and 8.086:1 dynamic.Thats using a .016 gasket that Denny suggested with 58cc heads
This is my first attempt at figuring CR per engine spec's so I may be missing something.
Other spec's are piston head relief 6cc;gasket bore 4";cyl.bore 3.935";deck clearance .041;stroke 3.00";rod length 5.7";cam intake valve closing point 41 deg.ABDC.
So .041 deck clearance+.016 gasket=.057 yuck!
Hey has that thing gotta Heme in it? No, it's a shevy not heme!
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05-11-2006 06:18 AM #2
CHR Member
- Join Date
- May 2003
- Location
- Zephyrhills, Florida, USA
- Car Year, Make, Model: '32 Henway
- Posts
- 12,423
I don't know how you figured the DCR, but I come up with 7.586:1 by using your 8.979 SCR and figuring your cam intake closing point at 41 ABDC @0.050" lift. If that is the case, you're gonna be a little light. A good, crisp street motor should be between 8.00 and 8.25 on the DCR.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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That is terrible, sad to hear about him.
RIP Mike Frade, aka 34_40