still crunching #'s and for more $ i can go up in cubes.. sweet... but wanted to ask if anybody has done the 427/434 small block.. looking at doing one....looking for more grunt..mid to top end in the 6500rpm ball park.. anybody?

With every build I've seen like that (421, 427, 434, etc) they almost always end up being worse off having built the small block - you'd be both money AND power ahead to build a 427 - or bigger - with a big block and put that in the car.

If you don't start with an aftermarket block, you'll end up with one.

Where I would start:

http://www.shafiroff.com/

see thats why im asking.

it would be with a dart block and all forged bottom end..

T & L Engine Development is going to do my old size eng now
and for like $1000 more i could go up in CID. there short blocks in that size run about $3400. nothing like more Cubes..

what is it you see thats wrong with the 420+ engs

Lingenfelter my old eng Guy. is passed and his shop is still going but i aways liked His input.. to what i wanted..

what about the 406's and the 415's

I've built quite a few 434s and 414s, and most of them with production blocks. The bang-for-the-buck is just not there. You can get 600 hp at 6500 rpm very easily, but it'll take a solid roller cam with over 250 duration at .050". Then after you spend about $2200 on heads, $600 on rods, $ 700+ on the crank, $600+ on pistons, and so on, you'll start wondering why you didn't just go LSx.

Good point. Cut to the chase and get the latest and greatest.

If you are going to build a 4 inch stroke anything. A tall deck is recommended. With that large stroke you are pulling the pistons way out of it's bore and you will have excessive piston wear. If you can afford the tall deck build a smaller cubic inch engine and use rpm to get you the power you want. Ask all those 434 engine builders that offer crate 434's about their reliabilty and wear on a higher hp 434 engine.

thanks for the replys..

with this upgrade (new short block) i wanted to Keep it $4000.
we know how that go's.. at this point

IM TIPPING THE SCALES NOW AT $7000.

another $3000 and im thinking about the RamJet 503 cid 602 Hp
they call it the 502 602 ramjet
crate Eng from Chevy.. then all i need is headers...lol.

all kidding aside.. this is getting spendy..

I know I just went from small block to big block. Now thats expensive.......

i picked up a few things I did not need!.. 5 hrs after buying them ..i say to my self..WTF DID I BUY THAT CRAP FOR!!
new seats $360
new set of MT ET Street's $340
Alum drive line..$185.

this stuff was not needed..as my stuff is still in good shape..
granted the tires will be coming in handy nexed summer about sep!
as my other ones are still fine..

then there was the no seeums... was thinking $500 but i paid summit this week $1500. ya know stuff like gaskets /oil pump/ cam lock/ cam button
new lug nuts cap plugs and heards hookers 2210.. nothing cool or trick looking just small stuff for the new eng.. so there is $2000.. and i dont even have the other eng out yet.. i have $5000 set aside for that..
with dino test on the new eng (using my heds and hard parts. and shipping $4200.

AND NOW IM THINKING HOW COOL IT WOULD BE TO DO MY FRONT END WITH ALL SPOHN PARTS$$ another $1400..

thinking crate bigblock $10.000
headers $1000.

HHUUMMM? 602 Hp alum heads.. Hummm


and it will fit my Ram air set up how cool is that..
A FOOL AND HIS MONEY ARE SOON PARTED..kEEPS RUNNING IN MY HEAD!!! MAKE NO mistake..i am getting the Big block.(Visa). after all it comes in a crate.. and can sit!! till the new small block brakes..

The L92 block can be bored to 4.125", so it's the cheap way to go 427 LSx. It's also a much lighter option than an iron-block big block.

wanted to Keep the eng under $6000.with the swap.
with a dart block looks like ill be into it for $3400. (short block)

and i can still use all my other parts.. that saves another $3000.

with the more cubes.. have to see if my 236/242 602/608 cam will fit.
love them Mech rollers..