Thread: help me determine what ive got!

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i know for a fact it needs rebuilt. started to tear it down and its got a bit of gunk built up inside of it. now techinspector1 i dont plan on doing anything that crazy that you speak of. im just looking to get 300-400 hp outta the motor, 300 being more realistic but 400 would be nice. the motor is going in a 87 mazda rx7 and most likely will have a T-56 transmission behind it. it'll most likely just be a daily driver that will see the 1/4 once of so a month.

now as far has those three engines you showed be above it couldnt be any of those since its a 68-69 327. thats where i get confused, all the site i looked at online all said different things

Tech, there are five HH listings in my MSA-1 book...the three you listed plus 1967 300 hp 327 in a corvette and a 1968 Imp 327, 250 hp powerglide

The 3947041 Head casting number is listed for a bunch of applications
68-69 302 with 2.02 intakes
68-69 327 300 hp with 1.94 intakes
68-69 327, 325 and 350 hp with 2.02
68-69 350 295 hp with 1.94
68-70 350 with 360 and 370 hp 2.02

some of these listings are interesting since they span the heads with and without bracket mounting holes in the ends of the heads

mike in tucson