basic sbc concept build info

grumpyvette

Administrator
Staff member
Ok in both those engine sizes 377, and 383, Ive recently built similar engines, if you add killer heads,(maybe the AFR, 195cc, brodix IK200 TRICKFLOW 215R )a cam like the crane 110921,or crower 00355, a cpr at about 10.5:1, a decent intake and carb like an edelbrock RPM air gap,1.6:1 roller rockers, and a 800cfm holley, good headers etc,match them to a manual trans with a 4.11:1 rear gear and you get a killer street/strip combo for a 2800-3200 lb muscle car, it won,t idle or perform great in traffic but it will kick butt and take names at the local strip .
as stated above a 377 and a 383 will produce similar hp but differant tq values
theres no question a 377 will produce slightly more hp per cubic inch of displacement with its larger bore and higher average rpm range, lets say (assume) 1.3 hp per cubic inch (490hp) for the 377 vs the 1.25 hp per cubic inch of a 383 built in a similar manor (480 hp)for the 383, but the 383 has noticably more torque in the lower and mid rpm ranges (below 5000rpm), where youll spend 90% of your time on the street.
the suggestion to build the 406 (the larger bore of the 377 with the longer stroke of the 383 is a good one, with the advantages of both you might get 1.27 hp per cubic inch, or 515 hp for the 406 with the tq curve that runs similar to the 383, but slightly better

http://www.crower.com/misc/cam_spec/cam_finder.php?part_num=00355&x=20&y=6

http://www.cranecams.com/?show=browseParts&action=partSpec&partNumber=110921&lvl=2&prt=5


http://airflowresearch.com/articles/article072/A-P1.htm

keep in mind SOLID LIFTER FLAT TAPPET CAMS are an excellent value, and route to keep costs lower
 
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