Hey guys my z28 came with a 305, I want to put in a newer block and keep it smog legal but I also want to get good torque and hp, anyone have ideas? I have never built an engine before. I need to know what heads, cam, crank, pistons, etc. Any info is greatly appreciated. Thanks.

 

whats your price range?

 

3000-5000? I already have a 350 single rear main hydralic lifter block to build on, I have no idea what cam to run or which heads. I just want to have a wicked ride for summer.

 

Here this will save you some money and give your 350 a good wake up



http://www.jegs.com/i/Edelbrock/350/2098/10002/-1

 

Which State is the car going to get smoged in? I hope it's not Ca...

 

That's a great kit, and a very good price, but I'm not sure it will pass the sniff test in any state that has a DEQ air test. Not too many 350's will make 400+ HP and still be smog legal.
All the items in that kit should be just fine with a smog motor, but I'd want to see the specs on the cam before I made a choice of that kit. The cam and carburetion will be the most critical factors for making a smog motor work well.
I'd stay with a cam that develops great low end torque, and that doesn't usually mean high HP. Generally a cam with durations under 250 degrees will work, and the max lift for that duration will help it breathe and build HP. I'd also stay with a spreadbore style Holley in the 600cfm range.

 

This is out of your price range but I think its the best way for a smog motor.https://store.gmperformanceparts.com/store/SelectProd.do?prodId=8188&redir=true&manufacturer= GM&name=LS3%20E-ROD%20emissions%20package%20(for%20automatic%20tra nsmissions)&model=<!--19244805--> Kind of long huh?

 

Yea it is in cali, heh I can save and get the ls3 I sorta wanted to piece it together myself and learn, my schools never offer auto shop or anything. That jegs kit looks good, what kind of crank and pistons would I run?

 

you should be able to run stock 350 rotating assemblies, but you could also go with these pistons http://www.jegs.com/i/SRP/867/138081/10002/-1 you will get 10.3:1 C/R with the 64cc heads. Or you can always go stroker, they make a crank that you can use instead of the 400 crank.

And if all else fails and you don't get to build your own engine, you can prob buy one close to your likings complete for under $5000 im sure?

good luck

 

Since you're from Cali, anything and everything that affects emissions is going to need an O.E. number (except if it a stock replacement). I recently got my 78 smogged in San Francisco and boy, was it tough. All I changed was the intake manifold to a Edelbrock 3701 (stock replacement, smog legal) and an Edelbrock 1400 carb, which has an E.O. number. I only changed TWO things and they still gave me a hard time. SO, bring your receipts and all the appropriate paperwork stating that whatever you put on (intake, headers, heads, cam shaft, etc.) is all 50 state legal WITH E.O numbers. A test-only might not care as long as it LOOKS legal (stock air cleaner, appropriate vacuum lines, EGR, EFE,etc.). BUT the Gold Shield test stations will question every part you put on so be prepared!

Also, go here... http://www.arb.ca.gov/msprog/aftermk...es/amquery.php

This website lists all aftermarket parts that are approved by the Air Resources Board.
All you need need to do is find what part you want to replace or add, find your year and there you go. It'll give you who makeS the product with the item number.

Sorry for the long response.
Good luck!