Does anyone know what the specs for the stock 1964 2bbl 300 cam are? I see crower 50226 looks to be a stock replacement, but I can't find the specs of that either in any of their catalogs.
valve lift is 401 intake and exhaust. duration at .050 i would guess high 180's - low 190's like 187 to maybe 193 duration
Can't find them. I checked their Buick cam catalog and they've got all cams listed apart from the 50226. Summit doesn't include specs for it either.
I'm getting a custom ground cam for mine, just wanted to figure out what the specs of the stock cam are to know if I'd be able to use it as a core. I have a Crower 50230 as well, but the LSA is 112 which is too big to grind down to the 107 or 108 that I'll need.
I've tried that already, can't seem to get it to work for any cam actually, just leads me to a 404 error
you could grind the 50230 down 3* from 112 LSA to a 109 LSA. that 50230 is a nice size cam on a 108 LSA with a 4* advance would be great with a 300 engine. on a 109 LSA might still be decent give it a 5* advance.
comp can grind you a 206 int duration with 461 lift and a 212 ex duration with 474 lift. on a 107 or 108 LSA
Those cam specs are great for under 9 to 1 static compression. He will have around 11 to 1 and will require more duration and overlap to lower Dynamic compression for pump gas. Why such a low LSA? Choppy, lumpy idle sound? For the street 110 to 112 is ideal.
we don't have all the information like compression or aluminum heads. 108 LSA in a small 300 engine would help it turn and better low end torque. why does it have to be 11 to 1 compression if building a new engine.you can add a little more duration and less built in advance. he must have a plan and was't asking advice on the cam i just volunteer it. lol
Heads are aluminum. Small 29cc Rover chambers instead of 54cc 64 Buick 300 chambers. .040 longer Chevy rods too.
Crower 50230 is good for 215 Buick, 3.5 Rover with about 9 to 1. 50232 is good for 3.9, 4.0 and 4.6 Rover with about 9.5 to 1. 300 and 340 really like the 50233 with about 10 to 1 compression.
A machinist I've been talking to throughout the whole engine rebuild suggested I use a cam with 107 LSA, 40 degrees of overlap so 254 degrees at 0.006. I'm still quite green when it comes to camshafts so I'm just going off of what he calculated for me. That would be with the Rover heads. The plan is going into a 3000lb car with 3.27-3.55 gears and a 4th gen camaro T5. This would net 8.79 Dynamic compression ratio with my 10.02 Static.
your machinist is on the ball. i like the 108 LSA if i had a choice. I would ask him if you can benefit from the extra lift and faster ramp with something like the comp cam. if your buying new pistons then again i would also stroke the 300 to get 340 cubic inch like David Nelson did, it was in hot rod magazine if you look up some old threads, then a one size bigger cam. the 340 would give you an extra 35 lbs of torque and maybe 30 HP with no loss in driveability.