72delta88

how much power could i expect to see from a 350 olds heres the parts list
60 cc heads
flat top pistons
holley 600
offy 360 intake
longtube headers
msd hei ignition
comp 280 cam
and 12.18.1 compression

slade69

Compression ratio much too high for that cam(280 advertised). You should be around 10:1 with pump gas.
Offy intake is not the best by any means, go 7111 RPM instead.
With that combo you will sure have detonation, unless running with ethanol as fuel?
With these assuming decent iron heads unported and stock valvetrain 0,5"ish lift you should be over 300 crank hp when tuned properly.

olds 307 and 403

Why in heck would you want that high of compression? That intake sucks and that carb is too small. Get a RPM intake and either a Slayer or Street Demon 750 and drop your compression by 2 points with that cam. Power brakes will be marginal with that cam, a custom from Mark might be a good idea. Mark's new stroker crank isn't cheap but adds a lot of cubic inches. I would maximize torque in your car. You also need higher stall and gearing with this combo.

72delta88

im converting to manual 4 wheel disk brakes so vacuum isnt a concern im switching to a build full manual valve body trans i figured id need a carb higher stall an gears im just trying to get a rough idea of how much power and what parts will work best before i order
im changing to 4 barrel high comp pistons and i may have it bored 30 over
whats marks contact info if i can build a stroker thatll b the route ill go my motor needs a cam main bearings oil pump ect after 107000 + miles its starting to die

olds 307 and 403

Fastone01@hotmail.com is his preferred contact through email. As long as a diet of premium fuel is fine, hopefully you have 93, 10 to 1 compression should work with the right cam. You will have 10 to 1 or a little more with flat top pistons and your current heads with a clean up mill. Also get the bowls opened with 2.07"/1.625" valves and the matching springs to whatever cam you pick.

72delta88

thanks much at the risk of upsetting the purist i may be dropping a sbc 383 in for the time being the car is my daily so ive gotta keep it running

olds 307 and 403

I understand that, I hate immobile vehicles. I am sticking a 260 in 88 CSC until I get the 424 stroker done.

72delta88

its still alive i treated my neighbers to the sound oif spinning tires and the smell of tire smoke

olds 307 and 403

Consider Mark's new stroker crank if you can justify the $1600 asking price and don't mind waiting a bit. Add Procomp heads especially if you are going to efi and the 4" stroker crank route, an electric pump is necessary with the Procomp's and your current heads need port work to match their flow.