Some history:

Ive been around these forums forever but havent posted. Usually getting ideas and such. Back in Nov 08 I bought a 91 Z28 that a guy attempted to swap gaskets on the top end and never could get it running...and it ended up sitting for 3 years. Overall the car was pretty rought...looks like the guy tried to paint it in a dirt field with dupli color. The motor had various bolts and things missing. After I got it home I was an inch away from sending it to the scrap yard after noticing all that it needed but my neighbor (a chevy mechanic at a dealership) said lets take a run at rebuilding it. Anyway, we've been tearing it down and getting our parts together and finally got the block, crank, rods back from the machine shop and were putting it back together. I just wanted to see what you guys thought about my build.

91 L98 iron block .030 over
stock crank .010
stock rods .010
Speed Pro flat top pistons .030

GM ZZ4 cam 208/221 .474/.510

Patriot Performance Freedom Alum heads (2180 angle plug)

stock 1.5 rockers

Hedman 68460 long tube jet hot coated headers (going to run true duals)

Stock TPI intake plenum and runners (sent to be cleaned and powercoated/polished)

Stock Throttle body

stock ignition with MSD cap/rotor/coil

Wanting your guys opinion on how it will run/perform and see if you all thought I missed anything really important since Im running out of cash for now...lol

Thanks in advance guys!

 

I had a ZZ4 cam in my car before. It made great low & midrange torque. Should be a fun motor when you are finished.

 

I have just about the same set up for my car. I have not got it back on the road yet. But i have drove it.

 

Always good to hear of someone rebuilding instead of crushing cars, especially a 91-92 Z! Sounds like a solid build thus far, good choice with the the Patriot heads. My father has a pair on his Chevelle and has 0 (zero) complaints. Only other thing I could think of is maybe look into a set of aftermarket intake runners and maybe a lil lower intake porting to better compliment the heads/cam you have. Good work so far! Looking forward to hearing how this engine turns out for u!

Nick

 

You should port out your intake.
Now you have a 355. 350's were technically too large for the TPI setup.
It's free aside from the time spent and money invested in buying the tools.