hi sorry for my poor english (dutch)
i have 383ci chevy 10:1 compression (STILL asembling)
edelbrock 750 carb, pro flow cleaner edelbrock
edelbrock rpm manifold
headers rollertip rockers
cam 230 in 230 ex 480 lift both
under drive pulleys, ram air scoop
462 fully ported heads valves 1.94/1.5 will de heads do a good job ????
and what hp will it get
I have used these heads on 383 and they work good, I used a bigger cam. Comp Cam 305 Magnum-.525/.525 lift, 253/253 dur, 110 cl
This is one guys opinion off the net-
Bert (aka Racerguy – your friendly Chevytalk Performance)
I can not give you an accurate guess as to the power that your motor will make, but I can tell you that 462 heads when well ported flow very well. I have a set of 462's on my 383. It has a GM 400 steel crank, H beem rods, JE 12.5:1 forged pistons, solid lift cam, 750 holley mechanical secondary carb, Hooker super comp headers, etc. The heads were brought up to 2.02 intake, 1.94 exhaust though. They are well ported by a long time racer and use roller rockers with a stud girdle. That motor is in my 69 Firebird with a turbo 350 trans and a 3:91 posi 8 3/4 mopar rear (3350 lbs. without me in it). The car will run a 12 flat 1/4 all day long at the track using only 255/60/15 BFG radial ta STREET tires. It has enough power that I can only start out with about 1/3 throttle off the line and slowly work up to full pedal down just before I shift into 2nd gear, and then it usually gets away from me a bit as it churps into 2nd. I run through the lights at 114mph or so and with a best 60 ft time of high 1.9's.
Long story short...462s can handle ALOT of street motor. 500hp easily when well set up. Those were the hot head back in the day, and they ran very fast with them. They do not have the ultimate potential of some of the newer heads, but it seems as though they are well up to the task of your motor.
Good luck and I hope this is useful.
"It has a GM 400 steel crank"
Just so you know GM didn't make a steel 400 crank, they were all cast. So if your crank is really steel, it would have to be aftermarket.
I loose my head sometimes. Sorry I was mixing my engines(have a 350 also) there for a minute. Perhaps I've been sniffing a bit too much of my exhaust fumes. I apparently "mis spoke" also about my exhaust valve enlargement also. I said they were 1.94's insdead of the 1.6's that they are. Again aparently loosing my mind. Sorry about the confusion.
Anyway, I love the modified double humps. Not as kick ass as the new stuff, but solid old school power!