hey what you think of a 355 chevy small block? going in 1998 k1500 with a 4l60e

 

Just a 350 bored .040 over. I had one in my 97 z71. Fan pretty good

 

Actually it is a .030 over bore


Nothing wrong with sbc engines. Built rite they are reliable, make plenty of HP.

Buddy of mine had a 327 old double hump head with good valves, valve job in them, in a 70 nove, would run low 12's high 11's all the time, twist it to 7k on a regular.

 

Id either run a 350 or a 383.

I don't think the 5 extra cubes is worth the trouble.

 

ok what can i expect on hp running a 490/490 290 cam what the guy building it said it was! heads are getting a little work done,flat top pistons? sorry don't have all the info down yet!

 

And you plan on choking it to death with the stock Vortec garbage CSFI....... or are you converting to something else..... or carb?

 

It's not the extra cubes as much as it un-shrouds the intake valve for a little more efficient air flow. But with the overbore you must decrease your chamber size on your cylinder head to keep your compression ratio the same. But I still live by the rule " no replacement for displacement". Don't believe me ? Check out Sonny Lennards Godfather!

 

This

I run vortecs with just a valve job.

And its Nova... i fixed it for ya

 

Will we are getting a valve job but all options are still open first going to try with a EFILIVE custom tune and of course see how far the money will last!

 

The intake manifold will kill anything from 4500 on or so....... Plus you are limited with the stock 19 pph poppets. You will run out of air before you run out of fuel though. Westers sells 30 pph poppets but the intake manifold is still a terrible design with the entire fuel injection system in with the air stream. You can get a Vmax spacer to lift the entire upper plenum an inch.... but I would just save pennies for a marine. That and the PCM is limited to 5900 rpm no matter what you set the rev limiter to if you care. An 0411 swap along with a marine intake should be in your budget.