I have a 327 engine from my 69 camaro,to build a 302 do I use a crank from a 283 in this block?Has anyone done this?Is it worth the trouble?Should I use the 327 heads (1969) or 283 heads (early sixties I think).What rods and pistons are required?

I would stick with your 327. It will be torquier and more fun to drive. Not to mention make more power.

Randy

Please do a search here under 302 or even my name b/c there is a bunch of info on the little buggers!!

pdq67

The 302 is a great motor. I have one in my Z, but I too personally think you should keep the extra cubes of the 327. If you really want the "DZ 302", I suggest that you build a "DZ 327" as an alternative, i.e. build your 327 with the same parts combination (cam, compression, intake, heads, etc...) used in the 302. I'm in the process of building a "DZ 383" so that I can store my little 302. I think your DZ 327 would run even better than a 302. Just some food for thought...if you absolutely have to have a 302, then give her a shot. The 302 pistons will be the expensive part from what I've heard, but it's certainly do-able. Make sure you keep the compression up. That little 302 needs compression to make her go with the cam she was born with. I've read of some other configurations where guys have used a shorter rod with say a 350 or 327 piston. Should be able to find it on this forum.

The "DZ 327" would be the same specs as the '64-'65 Corvette L-76 (327/365hp); use good aftermarket rods - the stockers are the weak link in the bottom end. :thumbsup:

Asside all of other great comments on keeping the cubes,, If your heart desires the 301 / 302 combo... You will need the pistons of course. Depending on if your current 327 is large or small journal you will have to use a 3" stroke crank, large or small journal. Drawback on small journal is small rod bolts but lower bearing speeds. Large journal will have larger 3/8's rod bolts and of course large crank id bearings. If small journal , you will have to use a 283 crank. Be sure which one you use as you will need a "steel crank" . You will need some good rods to match crank.

All in all you will have same reving ability between 301 or 302 , BUT, you will be less 1/4" stroke, thus less torque as the guys above mentioned.

I have a 327 engine from my 69 camaro,to build a 302 do I use a crank from a 283 in this block?Has anyone done this?Is it worth the trouble?Should I use the 327 heads (1969) or 283 heads (early sixties I think).What rods and pistons are required?
what 327 do u have the 210 h.p. version? i would go with a set of camel humps, u cant go wrong there, afterall that is what the 302 came with right?

Unless you are dying to try and shift at 8,000 RPM; the 3.25" stroke of the 327 when bored 0.030" over will give you the appearance, and thrills of a 302 on the street, with much better manners. Though a 4.155" bore (0.030" over 400 block) with a 3.00" stroke 4340 forged crank would also give you a very nasty 327 that would fun to drive also. :D


Larger Dave

Unless you are dying to try and shift at 8,000 RPM; the 3.25" stroke of the 327 when bored 0.030" over will give you the appearance, and thrills of a 302 on the street, with much better manners. Though a 4.155" bore (0.030" over 400 block) with a 3.00" stroke 4340 forged crank would also give you a very nasty 327 that would fun to drive also. :D


Larger Dave
dang i never thought of that one, thats a nasty high rever, try the .030 over 400 with a 350 crank aka: the 377 De-Stroker thats another nasty highreving motor.

if you have a long journal block you cannot use a 283 3.00" crank, and good luck finding a long journal 3" crank, if you stumble apon 2 lemme know.

thanks guys maybe I will try redoing the 327.Any ideas what is a good streetable cam.My heads are the stock chevy heads,not camel hump or anything.The pistons from this engine are 12:1 pop ups,used to be a racer I think.I assume I should buy lower comp pistons for the street,any ideas.

Sure, a CC 268HE or 270 Magnum AND flat-top pistons such that you get right at 9.75 CR or so.

GREAT street 327 motor, imho!!

NOTHING fancy at all here!!

pdq67