Thread: 350 rebuild

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Greetings

I am in the process of building a 350. It will be bored .030 over, with a stock crank, and factory reconditioned Vortec heads. I am getting really confused on what this will do to my compression ratio, and do not want to invest time and money and have the motor blow up on initial start up...so I was hoping that someone could clear a few things up for me. Upon research this is the list of parts I plan on using

4 bolt 350 block .030 over (355)
stock crank
Vortec Heads completely stock (64cc)

Chevy performance cam (24502476)
Hydraulic flat tappet
duration @ 050 lift - 212 int. / 222 ext.
valve lift - 0.435 int. / 0.460 ext.
lobe seperation - 112
3 bolt gear attachment

Hypereutectic aluminum pistons
Flat top, with four valve reliefs

My biggest question is will these work together, and create a strong engine, or will this raise my compression to level that will not function properly?

Thanks for any advice

Originally Posted by pmeffert

Greetings

I am in the process of building a 350. It will be bored .030 over, with a stock crank, and factory reconditioned Vortec heads. I am getting really confused on what this will do to my compression ratio, and do not want to invest time and money and have the motor blow up on initial start up...so I was hoping that someone could clear a few things up for me. Upon research this is the list of parts I plan on using

4 bolt 350 block .030 over (355)
stock crank
Vortec Heads completely stock (64cc)

Chevy performance cam (24502476)
Hydraulic flat tappet
duration @ 050 lift - 212 int. / 222 ext.
valve lift - 0.435 int. / 0.460 ext.
lobe seperation - 112
3 bolt gear attachment

Hypereutectic aluminum pistons
Flat top, with four valve reliefs

My biggest question is will these work together, and create a strong engine, or will this raise my compression to level that will not function properly?

Thanks for any advice

You'll be fine. it will be 9.0 to 9.5/1 compression DEPENDING on the head gasket you use. Cheap gas may cause some pinging.. if you notice it, add some premium to the mix.. but I doubt you will have a problem if you have the timing set right.
Have built a lot of street motors with similar combinations. you should have an honest 300 Hp or a little better when your done. Pretty decent combination of parts.