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Old 07-01-2012, 08:48 PM
joelster joelster is offline
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Originally Posted by my87Z View Post
@ Joelster,

many 87' and up sbc blocks were roller but most trucks still came with a hyd flat tappet cam until 92-93' when they started making the first vortec sbc's. they were the ones with the swirl port heads, not the 906/062 vortecs that we all know today.

then you go into telling him to go after building a motor that will be pushing out 450-470hp which his 92' firebird wont hold up to very well. the 400hp goal he has is pretty much right where he wants to be unless he wants to start spending big $$$$ on setting the car up to handle it.
350hp will grenade a factory 7.5" rearend. 400hp that he is shooting for will pop it in a second. He will need a new driveshaft as well, then the flimsy factory stamped-steel torque arm will have to go, not to mention the stamped lower control arms.

I just have a feeling he will be a little disappointed with those iron heads, when he understands that for a few hundred more he could make more power, run more compression, shed more weight and keep the motor cooler. While the motor is out and everything is easily accessible, spend the coin on some good parts. I'm not telling him to get some cnc'd $2500 set of heads. Just some bang-for-the-buck aluminum ones.

Originally Posted by my87Z View Post
take a look at my profile name, My87z, and ask me how i know. that Z doesn't stand for and old datsun or nissan, it stands for Z-28. my most recent build has me running very low 11.0-11.15" and trust me when you exclude the motor i still have well over 10,000 into the car (not including the purchase price)
I have owned 6 Z-28's ('79, '80, '87 IROC, '91 G92 350, '94, and '95), so you aren't telling me anything I don't already know. My current Z-28 runs 10.5's on pump gas, in street trim. I know all of the weak links in a 3rd and 4th gen. 400hp will find them too.
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