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Originally Posted by 1940bowtie
Great Site! I have a '68 Cutlas Conv. orgi 350 & #5 heads. Heads are currently receiving 3-angle valve job, surfacing etc. Also just received Performer RPM intake and 750 cfm Edel carb. I would like to build "nicely" performing street cruiser. This car wont see the strip, but it will see lots of Hwy miles. I recently read an Edelbrock article "397 HP in and Olds 350" that peaked my interest. I am concerned that the cam might be to radical for my application. The cam (#7112) has duration @.50 of Int-224, Exh-234, and lift at valve of .496/.520. Anyone have any experience with this cam or thoughts? I'd like to get around 350 hp and still afford to drive it everyday, or am I dreaming?
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1940 bowtie,
That is a lot of cam. You didn't mention what transmission you have, but if it's an automatic, you going to need a high stall converter/and/or 3.73:1+ rear gear or you will have no low end torque.
It seems to me that if you want a pleasant street ride it's best to try to achieve your hp goals by building the engine with an excellent cylinder head and a mild cam, rather than using a mostly stock head and trying to make the power with the camshaft.
For your goal of 350 h.p. you should be able to achieve that by using a cam with less than 220 degrees of duration all the way around, and keeping lift below .475". Plan on building with 9.5:1 pistons. Call Crane and tell them exactly what you want to do. Once you get the cam specs, then call Coan or one of the converter mfgr's, and get a converter made for your combo. Get your distributor recurved for your compression ratio/cam/converter combo. Install a Performer RPM intake and a fresh 750 cfm Quadrajet and you should have a pleasant street machine.
Huron