ProStreet_632

Hey guys, anybody running big cubes on the streets these days, just seeing what is out there...

I have a 632 in the works
Donavon Aluminum block
Callies 4.75 crankshaft
eagle 6.7 rods
Je Custom 10.5 compression pistons(pump gas motor)
Brodix Big Brodie heads(done by Reher/Morrison)
Dart intake
Comp solid roller(it's big) thats all I can tell you.
backed by a Turbo 400 with a brake

Should get about 5-7 mpg, not a economy car thats for sure

capn smokey

iTrader: (1)

What did that donovan run you $$$$?

ProStreet_632

$2000 used, came with 2 new sleeves that I had to install

ulakovic22

iTrader: (12)

That's definitely big. I'm going to be running a 555 in my T/A.

G&HRacing

540 going to 565 next rebuild. Rarely street driven these days, no more than a few laps around the block the last few years, just so it's considered "street driven". Engine size has nothing to do with streetability anyway, it's camshaft size and how long will the lifters and springs last.

stainless40cal

WOW bro let me know if you see another aluminum block for that price used ill grab it asap

78novacaine

iTrader: (2)

holy hell, that sounds like a badass setup

p.s., what color is your 67, just wondering if i have seen it around town

JUICED96Z

iTrader: (2)

Sounds sick, I you sure you don't mean 5-7 gallons to the mile???


As long as you have a good top notch aftermarket cooling system you should be ok. My 468 stays cool all day long with two sets of fans and a belt driven water pump. One of the fans is attached the the water pump (ditching that soon for an electric water pump).

As stated above more of the issue is cam size and valvetrain

383lt1impala

iTrader: (33)

Well You Can Go As Big As You Want Aslong As It Lasts

ProStreet_632

I got lucky on the block, most likely will not c another like that, unless it has been destroyed.

ProStreet_632

It will be stay cool, already have the radiator and fans to go with it, no problem on that...been dealing with big blocks for 20 years know, never hade 1 overheat. As for the valve train, it will be fine, just have to adjust them every now and then

JUICED96Z

iTrader: (2)

HMMM I have allways been told the larger CUI you go the harder it is to keep cool. IE 5XX and up.

slick1851

Wouldnt that depend on the car? And what your doing with that motor?

JUICED96Z

iTrader: (2)

Yes, but I doubt someone building a 6XX motor is building something mild

ProStreet_632

Just went from a 598 in a street car for 3 years with no problems, to a 615 in a buddy of mines car....depends on how its built and who built it, it will be fine

JUICED96Z

iTrader: (2)

Im sure it will be fine, was just curious

ProStreet_632

It will be kinda mild, most people don't know that more cubes, eat up the agressiveness of a pretty good size cam and calms it down some.

93Polo

iTrader: (5)

Sounds like a carzy 1st gen

I do know of one other 632" streetcar a 67 Vette. He posts on Corvette and sometimes Team Chevelle.

http://forums.corvetteforum.com/show....php?t=1728758

JUICED96Z

iTrader: (2)

Thats true, the more CUI the smaller the cam is in the motor. As in a BIG cam gets smaller with the more CUI the engine gets.

For a 350 a .650 lift cam might be considerd big but for like a 408 its just right.

Its all relative.

ClemsonT/A

iTrader: (2)

I am planning a 572 crate with a cam swap for my 1969 Impala backed by a th350. looking for around 600 rwhp in the street car. It was my first car and a gift from my great grandmother.. I am rebuilding the car in her memory. She bought it brand new in 1969 (paid cash) 327/pwerglide 2 door vinyl hardtop.