BBC CASTING #'S
 

HELLO i HAVE A BBC THAT I WAS WANTING TO FIND OUT JUST EXACTLY IT WAS. I HAVE THE NUMBERS OFF THE BLOCK AND HEADS . THE PAD IN FRONT OF THE PASSENGER SIDE HEAD READS=T1001TRW C4B116871 ON THE BACK OF THE BLOCK IT READS 999289 T12 DRIVERS SIDE HEAD READS 12673 GM11T PASS 336781 PASSENGER SIDE HEAD READS 338781 GM9T 12773 . IF SOMEONE CAN HELP ME OUT I WOULD GREATLY APPRECIATE IT. :D

IT CAME OUT OF A 69 VETTE! :lol: :lol: Sorry, I had to say it!

THANKS ONE BAD i FIGURED IT OUT. 113CC CHAMBER HEADS CAME IN A 73 -79 PASSENGER CAR 270 WHOPPIN HP !! i'M GUESSIN THIS WOULDNT BE A GOOD CANDIDATE FOR A DRAG CAR?? :lol: BUT ON A SERIUOS NOTE WITH A CAM UPGRADE AND SINGLE PLANE INTAKE AND GOOD CARB AND HEADERS WHAT IS THIS ENGINE CAPABLE OF ??

Absolute worst heads Chevy ever made for the BBC. Those are the emissions smog heads, better known as "peanut ports".

You will also have a terrible time finding pistons for them that will work. They are neither a closed chamber head nor open. A true open chamber is 119CC.

Take them down to your local scrap yard and donate them, or use them in a tow truck.

They won't make HP, but they will make torque. Good for towing, not hot rodding.

The 14092360 casting is known as the "peanut port" head and are good for a peanut port. The 781 and 049 head have the large oval ports and can be made to make some decent power. www.mortec.com is a good place to look for casting numbers.

talk about bursting someone's buble. :lol: Hey at least you are honest. I thought I read somewhere years ago that Lingenfelter(sp) could make impressive numbers with those with port work. Obviously much more cost effective to buy better haeds especially since he is gone now.

Neither 781 nor 049 heads came with a 113CC chamber. They were both 119CC (in reality they varied between 118 and 122). I have a set of 049s sitting in the basement now.

So I guess the thing to check would be the chamber. If it's a true 781, it won't be a 113CC.

If it's a semi-open, like I said before, it'll be a pain in the arse to get a good piston for it.

Even if it's a 781/049, in order to make it breathe, the valves will have to be upgraded to 2.19/1.88s, which means new seats.

By the time you get done messing with rebuilding them and doing needed upgrades, it would have been just as easy to buy a low end set of aluminum heads.

And yes, you can make good power. I ran 13 flats with a 462 in a 3700 lb truck with them with a 9.5:1 motor (about 435 HP). Same motor with a B&M Powercharger 250 (4-71) with 7 PSI went 11.30s on pump gas in 1994 (about 660 HP).

Same motor with an alky dominator on top ran 10.50s just with a carb/fuel change (about 820 HP)

http://www.youtube.com/watch?v=QsCQbYpzQPM

http://www.youtube.com/watch?v=LW-9NV0VDMQ

so basically the heads are boat anchors. and the block has low compression pistons?? I was thinking about putting it in my 81 malibu drag car for a low budget play toy but by the sounds of it this thing would be slower than my street car.???

You could make it into a good motor, with a LOT of work. Realistically though, it's probably going to make the same power as a good small block, except it weighs 200 lbs more.

I mean, if it's together and running, toss it in there, assuming you have headers and appropriate front springs for your malibu. Spray the snot out of it and don't care about blowing it up.

Having one of those "don't give a flip" motors are some of the funniest and toughest motors you'll ever have! Kinda like the old 305's. Pcs of junk, but as tuff as wood pecker lips!!

Oh boy...I just got blasted for 3 pages on the chevelle forum for saying a motor was a "hunk of junk" so you better apologize to me because my grandmas station wagon had a 305 in it and I'll have you know it never did blow up...so you are WRONG!!! :lol:

JK...LONG STORY

I have a good 454 block with a good steel crank and rods needs bored the shop says .60 will clean it up. how much $$$ do I need to build a high ten second engine? the car will be a 81 malibu all suspesion work is done. is it possible with only 468 cubes?? the engine shop wants to stroke it to 496 and put a roller cam in it with RHS heads the bill will be 8000.00 for a long block, thats a bit out of my price range right now. he said he can cut costs by not stroking it and using a hyd. camshaft. just wanted to see what you more experienced guys think.

That's what I meant. The 305 was a pos, but you can't tear one up. The run forever. I've seen guys try to blow 'em up and you just cant!!
I'm a Chevy guy, but even I know a pos when I see one! lol

HA IM ONE OF THOSE GUYS HAD A 305 IN MY 84 HALF TON. I WENT THREW 2 REAR ENDS TRANNY WAS JUNK. BUT THAT DANG MOTOR WOULDNT DIE. WHITE SMOKE FOLLOWED IT EVERYWHERE. BLOCK WAS CRACKED AND IT WENT THREW A QT. A DAY. BUT I COULD NEVER KILL IT.

The old Chevy straight 6s were another of those motors. You couldn't kill one if you tried.

A guy I grew up with, back when we were teens, had a 70 Nova with a straight 6. He wanted to put a 350 in it. His dad says not until the straight 6 is junk.

Well this crazy fool decides he's gonna help the straight 6 along, and takes all the water out of it... He drove it around for nearly a week with no water and it never locked up!!! WTH!?

The motors you don't give a damn about always seem to run best and last the longest.

Steel crank is a good start. No need for a 496 unless you have the extra cash laying around to spend.

Nothing wrong with GM 7/16" Dimple rods...

If it's a 2-bolt block, just keep the RPM's down (under 7k) and it'll be fine.

Any FORGED (not cast, or hyper-junk) shelf piston is going to be fine. Get the pistons in hand before they hone the block so they can set the piston/wall tolerances right.

If you think you might want some bottle or blower down the road, short fill the block (about 1" below the water pump hole in the front of the block) BEFORE you have it bored/honed with torque plates.

Make sure they deck the block to where the piston is about .010 in the hole (that's my preference anyhow, opinions vary), and put the correct finish on the deck surface for the gasket you'll be using.

That'll get ya a good base.

Buy a GOOD oil pan/pump. You'd be shocked at how many high end engines have junk pans on them, and lose a TON of power due to it. Windage eats HP like mad.

What heads are on it now? Whats the car weigh at the starting line?

the heads are smog heads and I was wanting to buy a aluminum head but dont have 3g's to spend, is there a cheaper alternative?as for the car it has full interior , 9 inch moser 3.90's 35 spline axles N case center section , and its set up for a th400, not sure of weight but its probaly pretty heavy. car had a 540 in it and went 10.20's before I got it.

By the time you spend the money to have a set of Chevy iron heads worked over, you'd be just as well off to buy aftermarket aluminum heads.

Keep an eye out here on RJ for Dart 320s or Dart 325 Pro-1s. Either can be had ready to run for about 1800.00.

Just do yourself a favor and stay away from the cheap Chinese crap that copies all of the innovations of the USA manufacturers. Tolerances vary greatly on those heads.

Try and stick with known brands like AFR, Dart, Edelbrock, Brodix, etc.

Search away: http://www.racingjunk.com/category/1...ds.html?page=1

For compression, to put it in the mid 10s, probably going to need to be 11:1 or higher.

Cam, mid 600s for lift.

Of course, keep in mind, with making power, you better have the transmission, rear end, suspension, etc to make it all work.

how stout of a th400 am I gonna need for a 600 hp engine?

Bone stock with a fresh rebuild.

WOW i'M GLAD TO HEAR THAT ! WILL MY 3200 STREET FIGHTER CONVERTER HOLD UP TO IT??

engine
 

Save ya some time,I got an alcohol injected 489.727hp at wheels ill sell ya for $6000,throw in a built glide with a 5500 converter to boot, should get ya into 9s

I destroyed one of those with a small block. It sounded like it had gravel in it when I took it out. Maybe just bad luck cause the motor was nothing...11 to 1 406 with a hyd cam. I did abuse it though...powerbraking etc

8000 DOLLARS IN A BBC I WOULD HOPE TO BE GOING IN THE 9'S.I GOT ALITTLE OVER 4000 IN MY SBC IN A 86 SS MONTE CARLO AND IT IS GOING 10.40'S AND THAT IS ALL MOTOR.

Not a chance in hell.

what convertor will hold up and how cha-ching are we talkin??

Plan on spending no less than $1200ish on a good converter.

Bolt togethers are nice, but not required.

Neil Chance, ATI, Transmission Specialies, Coan... I'm sure there's more quality venders out there.

Before you call them though, it would be best that the vehicle is done, and an exact weight is known.

If you give them garbage information, they can't build you a good converter.

Personally, I run a Transmission Specialties 10.5" Northstar Spragless. But, converters, like brands of underwear, are a personal choice.