Guest Anonymous Posted January 30, 2002 Share Posted January 30, 2002 I want o do a more accuate measure to decide on a cam and I want to use the airflow and cam files to get a little closer. Someone previouly mentioed how to get the files and I can not find the post now. how do I get em? Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted January 30, 2002 Share Posted January 30, 2002 here this may help, http://www.prestage.com/carmath/ddheads.asp btw if you hit the icon that looks like a valve and arrows you can load your own port flow data,and if you use CRANE,LUNATI,OR EDELBROCK DATA for .050 lift the cam data works too, use seat to seat timeing for COMP CAMS DATA THOUGH Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 30, 2002 Share Posted January 30, 2002 that is what I was looking for but the dart pro1 heads with the 200cc runners are not listed....just the 215 cc. mine are the 200cc with 72cc chamber, 2.02/1.6 valves. 350 block with 3.8 stroke scat crank. steel bushed rods, flattop pistons, I was thinking of useing the Doug Herbert cam(solid roller)with .502/.502 but can't remember duration. I have the roller rockers, solid vertical locking roller lifters, going with victor jr. or team G. 750 holley unless I can get ahold of a BG. I guess I have most of info I need except the cam specs. I want to be pushing between 450-500 ponies. Then I plan to drop a 150 horse juice kit on top. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted January 30, 2002 Share Posted January 30, 2002 here , you will need to make your own files but heres the data, http://www.dartheads.com/sbpro200.htm http://www.dartheads.com/sbpro215.htm http://www.dartheads.com/sbpro227.htm http://www.dartheads.com/sbpro230.htm Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 30, 2002 Share Posted January 30, 2002 hey grumppy......I have made much more progress now but have another question. On my Dyno cam card I put in all specs I had available but there is an input I don't know what to do with. I put in the Lobe Center Angle but don't know what to do with Crank Centerline. Not sure how this will affect my numbers. I played around with cam numbers to get the most reasonable hp I could without sacrificing bottom end. I am up to 498hp@6000 and 474ft.lbs.@5000 Can I give you all my numbers to run on your machine? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 30, 2002 Share Posted January 30, 2002 also....do you know anything about using my 3.8 stroke crank in a 400 block. If I used bearing spacers I could bolt it in but I don't wnat $700 invested in custom pistons. What rod piston combo can I use to do this. Since I will have to modify my block for the larger stroke I thought maybe I would just use 400 block and get another 20 cubes or so. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 31, 2002 Share Posted January 31, 2002 The 3.8" is the 350 crank? into a 499 block right? Hot Rod Mag did an article on the 350 chevy should have built (bigger bore less stroke) that sounds similar to what you want to build they only made 400hp but their critera was alot different (Califoria wharehouse?? I think supplied the spacers/bearings)any way do a search for 400hp 350 in the post I think a few things have been covered there. your engine sounds very interesting please do a post with your findings and cam selection Zya Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 31, 2002 Share Posted January 31, 2002 Actually the 350 is a 3.48" stroke. A 3.8" stroke with a 5.7" rod and a 383 piston will yeild 388 cubes. The stroke of a 400 (383) is 3.75". So by puting my crank in a 400 block and boring .030 over I would get a slightly larger stroke, less bearing friciton from the mains, and somewhere around a 415 cid Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 1, 2002 Share Posted February 1, 2002 Sorry about the confusion about the crank. Definatly 6" rod would be the wat I would go on the 400 .....5.6" can't be good for performance. Still interested in the 3.25" stroke 4.155" bore 350? 2500rpm 394ft/lbs...3800rpm 435ft/lbs.....5200rpm 400ft/lbs all this on 87 octain gas and AFR190 heads and a milder Comp cams 270hr10!!! Hot Rod June 97 Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 2, 2002 Share Posted February 2, 2002 I think you are on track but slightly off. 327cid: 3.25" stroke 4" bore 5.7" rod 350cid: 3.48" stroke 4" bore 5.7" rod 400 cid: 3.75" stroke 4.125 bore 5.? " rod a 400 block with a 327 crank and a 6" rod with custom pistons that are very high dollar will yeild near 353 cubes. Very high reving, low torque, high horses (only in high RPM band). Grumpy???? is this all accurate. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted February 2, 2002 Share Posted February 2, 2002 the 400 sbc normally has 5.565" factory rods, a 3.75" stroke and a 4.125 bore.a 400 block bored .030 oversize(4.155") with a 3.25 stroke 327 crank, 6.125" rods(prefered) would get you 352.5 cid but most 327 cranks are small journal and putting them in a 400 block will require custom bearing spacers, a better swap is the 350s 3.48" stroke crank that with a 4.155 bore , 6" rods, that yields a 377.48 cid engine (thick bearings for this swap are available). or if your into spending big bucks use a aftermarket raised cam location block with a small base circle cam, a 4" stroke crank, 5.7" rod and a 4.155 bore to get a 433.89cid small block. while its true the long rod smaller displacement engine makes more hp per cid the 433 will make much more total torque and power over most of the rpm range.BTW a 433 with a supercharger only needs to turn about 5500rpm and still can make 600 plus hp/650ft lbs easily Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 3, 2002 Share Posted February 3, 2002 was there any info you had to offer on the 3.8" stroke crank in a 400 block? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 5, 2002 Share Posted February 5, 2002 Also like John lingenfelter said in his book why build a special component 377/352 ect when the cubic inches of a 420 sb will kill the other special engines Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 5, 2002 Share Posted February 5, 2002 Hot Rod built the engine for $3000.00 less carb intake But still 412hp with 87 octane gas I wouldn't complain Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 6, 2002 Share Posted February 6, 2002 Two questions guys. HotRod built which engine? And Lingenfelter built a 420 using what? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 8, 2002 Share Posted February 8, 2002 Hot rod built the 352 for $3000 Lingenfelter built the 420 using a 400 block punched out to the max on bore and stroke almost custom everything,(rods,pistons crank,ect) sorry I don't have his book infront of me to give you #'s Quote Link to comment Share on other sites More sharing options...
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