383 240z Posted March 21, 2003 Share Posted March 21, 2003 First off the car. 2900lbs 4.11:1 rear with 245/45/16 and 7004r w/2000 stall. Mostly street use some track driven about 60 miles a day to and from work. The heads are 64cc iron 461 heads 1.94"/1.50" with 1.6:1 roller rockers, some blending done. Block is a .030 over 350 with cast 400 crank. Forged SpeedPro L2491's on rebuilt 5.7" rods. Total Seal 1/16" moly rings piston is .019" below the deck at TDC. SCR should be about 9.77:1. Intake is a Edelbrock RPM with a 650 Holley 4150 w/Vac 2ndry. The exhaust is a set of small tube headers 1 1/2" with 2 1/2" collectors to a pretty open muffler. I THINK a Crane Cam #113942 will fit this package well. I decided to go with a smaller carb to increase the velocity of the intake charge at low speed. This should help my MPG and throttle responce. Now there is the question on the quench height. A link that grumpy sent me says to run a .035" quench if the piston is .019" down the bore at TDC then my head gasket should be about .016" thick, right? Do they come that thin or do I get the block decked and run a thicker gasket? Any ideas what octane this motor will need? Also how does one figure DCR? I wish to thank everybody who has been helping me with this so far. Keith Quote Link to comment Share on other sites More sharing options...
383 240z Posted March 21, 2003 Author Share Posted March 21, 2003 Forgot one more question How do you think this set-up will take to a 100 shot of N2O? Keith Quote Link to comment Share on other sites More sharing options...
Guest Your Car is Slow Posted March 21, 2003 Share Posted March 21, 2003 Provided you can back off some timing while you spray...and provide enough fuel....a 100 shot would be quite nice Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted March 21, 2003 Share Posted March 21, 2003 7733 SH1 Steel Shim .015 $10.99 http://www.flatlanderracing.com/perfgaskets.html for a 100 shot back off 4-6 degrees of timing go up about 4 sizes in carb jets if its a dry spray nitrous heres something you may want to look at http://www.ws6.com/mod-13.htm Quote Link to comment Share on other sites More sharing options...
383 240z Posted March 21, 2003 Author Share Posted March 21, 2003 So Ihis is a good package? I'm ordering the rest of the parts today. thankyou for the info on the head gasket. Keith Quote Link to comment Share on other sites More sharing options...
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