Thread: 327 for 88 firebird

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Yeah yrs ago the small journal crank everyone wanted for less fiction.We also put in a 283 small journal crank for a de-stroker.Spun those to the moon.But any how,given a consideration of a head swap,you don't want to get with a cast iron head and today's gas too high of a static compression ratio.SCR.That would be adding octane booster for the yrs you say you want to use it.The first link I am posting is for SCR and you can play with head cc's to see what that would be.

AutomotiveCalculators and Converters

The second link is dynamic compression ratio and that is considering the cam timing and how much compression is bled off because of that.

Wallace Racing - Automotive Calculators

You need to know to a certain degree given the bore size of the 327 that no matter what upgrade in a head you make the intake valve is shrouded by the bore size.

I had a 305 in a 1987 Formula FB with a 700R4, quadrajet carb and everything else stock. I installed a Comp 252HE cam - 206-206 dur. at .050, .430 lift, 110LSA and it was a really great cam. Lots of low and mid range power and still got decent gas mileage. Even with some 1.92-1.50 heads this cam would work well in your 327. Hot Rod did a cam test on a 9.7 c.r. 350 with AFR 190 heads and one of the cams was the 252 cam. The engine was a zz4, with edel. perf. intake, 750 holley, headers and it made 348 hp which is what the old L79 222-222- cam made on the same engine. They then used a Comp 268HE 218-218 cam and it made 380 HP. I would definately go with a 350 trans or better yet a 700R4 with its low first gear ratio. Good luck.