Anybody know the factory power output of an SP 350? Also curious about specs such a comp. and cam lift/duration. Anything else special about them such as:intake/exhast manifolds, carb etc?
factory was i think 315 bhp and 410 ft lbs, but i'd have to look it up. compression i've heard as 9.5:1, 10.25:1....no idea who's right. i would also like to know the cam specs, since i'm looking at putting a new one in soon.
70 SP 350 Specs Hope this helps! 1970 Buick 350 "SP" HP- 315 C.R. 10.25 to 1 Carb- Rochester 4MV-7040245-man trans Carb -Rochester 4MV-7040244-auto trans Head cc- 48.0 (1233472,1240143) Piston height/volume- .075" / 17.3cc's Cam lift 382/398 According to the information I have all 1970 Buick 350's, including the 2bbl, use the same head casting and valves. And both 4bll engines share the same carb and intake manifold (1231924) as well It appears the only difference was the cam and pistons between both 4bbl options. Jake
My 71 350 has 9.5 compression, a holley 750 double pumper, accel equiped HEI, K&N filter, ported stock intake, headers, elec. fuel pump and a .469 lift/.268 duration comp cam. What kind of power numbers do you think I have? How much will the TA intake I'm ordering increase those numbers? Also what do you think my 1/4 mile times would be; car is a 79 regal, TH400, 2400 stall, 3.08 gears and 2.5'' flowmaster exhast? Thanks
Re: 70 SP 350 Specs The same cam was used in the 350 engine 1968 through 1972 (and possibly in later years as well).
Same Cam??? Marco, I think it was you who showed me the web site with the engine specs (NHRA I think). It is from there that I got this info. It lists 3 different cam lift specs for the 3 different 70 350 options. What gives? Jake
Re: Same Cam??? o No: :error: You got me Jake! You're right - the NHRA page lists three different cams for the 1970 350. I always believed that the 350 cams were identical. I'll try to do some research and see what I can come up with. Sorry for the confusion - we'll get to the bottom of this sooner or later. Anyone have a 1970 original parts catalog? We need to know if multiple 350 cams were available.
Different Cams Marco, I don't have a parts catalog. But I do have what I believe is the original cam from the SP 350 I stripped apart. Are there part #'s on a stock cam? I will look at it when I get a chance. Jake
My 71 350 has 9.5 compression, a holley 750 double pumper, accel equiped HEI, K&N filter, ported stock intake, headers, elec. fuel pump and a .469 lift/.268 duration comp cam. What kind of power numbers do you think I have? How much will the TA intake I'm ordering increase those numbers? Also what do you think my 1/4 mile times would be; car is a 79 regal, TH400, 2400 stall, 3.08 gears and 2.5'' flowmaster exhast? Can anyone give me a rough estimation on this?
specs on 1981 350 Y-block???? Can someone help me out with the specs on the Buick 350 Y Block...1981 out of a Buick Le Sabre Wagon??? The stock horse power, torque, cam size... Stock head / valve sizes, open chamber?, low compression? Stock cast or steel cranks.... 4-bolt or 2-bolt main? Stock cast or forged pistons? Stock lubrication problems? Stock cooling problems? Maximum bore size before heating problems? Where is that website???? I'm ganna have to get me a book or two! Thanks
Both my father and my uncle worked at a Buick dealership in the '60's, early '70's. They are Buick performance enthusiasts since the mid '50's. The Buick 350's all used one part number for their cam. The only variation on the Buick 350's (accurate for '68 - '72 only) are the pistons and distributors. Heads, intakes, valves, ex. manifolds, etc. were all the same. For '73 and up, we don't know what cam was used. I would bet it was a smaller profile with a few degrees of retard (the cam, not me).
