Thread: BBC head question..

Tweet

Well this is my first big block so bear with me. It's a 427 tall deck (#3969858) with (#343772) heads. My question is are these heads any good. If so what are the valve sizes and the combustion chamber volume. Any help would be appreciated..

Originally Posted by 87AeroSS

Well this is my first big block so bear with me. It's a 427 tall deck (#3969858) with (#343772) heads. My question is are these heads any good. If so what are the valve sizes and the combustion chamber volume. Any help would be appreciated..

It really depends on what you are going to do with the engine.
I have never flow-tested that part number before.
I do know they used that head on the 366 truck engines and I would say they have the small intake ports.
If it is going in a pick-up and will see no more than 4,500 rpm's use the heads.
If you are trying to build a 550 hp engine for a car you better buy some better heads.

Thats what I thaught. I'm looking to do a 535 with it. My buddy has a set of aluminum heads with 320cc intake runners, 119cc combustion chambers, and 2.25 1.88 valves, that I could get in a trade deal. I believe they are Pro Top Line heads.

Originally Posted by 87AeroSS

Thats what I thaught. I'm looking to do a 535 with it. My buddy has a set of aluminum heads with 320cc intake runners, 119cc combustion chambers, and 2.25 1.88 valves, that I could get in a trade deal. I believe they are Pro Top Line heads.

If this is a street driven car the 320 cc heads might be a little large.
But if your 535 will see 7,500 rpm's often then they will work fine.
In a street car I would look at the AFR's 305 cc head or the Brodix BB-2's we have used both of these heads on 496-535 with really good sucess.
Of course you do know the 535 has a 10.20 deck height which means you need to run a MSD billet distributor with the slip collar,you will also need a longer oil pump drive and a tall deck intake manifold.
Also because the heads sit up higher sometimes exhaust becomes an issue.

Gotta agree with Eric, 320cc intake is a bit large unless it's mainly gonna be used at the track. Pro Topline, unless they've cleaned up their act, is at the bottom of my list for heads. They're always cheaper in price....why do you think that is?? Those heads will work, but you'll give up quite a bit on the bottom end.

I'll probably look into the afr heads. It will be more of a street car, besides I really don't think I want to get rid of my 406 small block for a set of heads. I do undersatnd the challenges that go with the tall deck but I think I can handle those.

theres no replacement for displacement aero
If you GET a GOOD deal on those heads get them!
you can run a oval port intake from brodix[HVH2007]KEEP YOUR BOTTOM END TORQUE AND HAVE PLENTY OF HEAD FOR THE TOP END & SAVE SOME CASH!
if you need more top end SQUEEZZZZZZ!
& RUN A 2" 4500-TO-4150 SPACER W/A WELL TUNED 1050+ DOMINATOR.

Originally Posted by TT572ZZILLA

theres no replacement for displacement aero
If you GET a GOOD deal on those heads get them!
you can run a oval port intake from brodix[HVH2007]KEEP YOUR BOTTOM END TORQUE AND HAVE PLENTY OF HEAD FOR THE TOP END & SAVE SOME CASH!
if you need more top end SQUEEZZZZZZ!
& RUN A 2" 4500-TO-4150 SPACER W/A WELL TUNED 1050+ DOMINATOR.

UMMM,there is only one problem.
The heads he is thinking about are rec. ports, the intake you listed is an intake for an oval port head.
Do you think he might have a little "port alignment problem????

you can look at e-bay 230076396515 they would work ok for low mild rpm

Well its posible! but I doubt it Eric, I ran a set up like that before w/a set of Dart-308's and a Dart oval port intake on a 496"BBC w/a 1050 dominator
& that 2" spacer! I bet i would give that blown540/57 a run for your money w/alittle space

Originally Posted by TT572ZZILLA

Well its posible! but I doubt it Eric, I ran a set up like that before w/a set of Dart-308's and a Dart oval port intake on a 496"BBC w/a 1050 dominator
& that 2" spacer! I bet i would give that blown540/57 a run for your money w/alittle space

I am just a little curious to what intake gasket you would use to make that work.
Would that be a 1210 or a 1211 Fel Pro?

there was a time that dart told people to use the O port intake on the rect head with a heavy car .and you would use a rec gasket f1211. i have used rec port intakes on O ports it work how good? lets say it work i think it would be fine it would not hit the wall the head i do not think any one would wast the time to dyno but did hear that the old 396 stock cars did use the rect port for the O ports gm stock alum intake

WELL BIG E
I THINK I WOULD USE A 1211. BUT ITS BEEN A WHILE SINCE I PUT A COMBO LIKE THAT TOGETHER SINCE MOSTLY IVE JUST BEEN REDOING MY BIGCHIEF's WHEN NEEDED, IM NOT A BIG ENGINE BUILDER GUY LIKE YOU AND PAT,I JUST
DO WHAT I DO DOWN HERE IN THE BIG CEREAL BOWL FOR ME AND MY CUSTOMERS.

ERIC!
WHY WOULD A JEDI MASTER SUCH AS YOURSELF ASK ME WHAT TYPE OF GASKET TO USE
YOU WOULD'NT BE CHECKING ME OUT TO SEE IF I KNOW WHAT IM TALKING ABOUT WOULD YOU

Originally Posted by TT572ZZILLA

WELL BIG E
I THINK I WOULD USE A 1211. BUT ITS BEEN A WHILE SINCE I PUT A COMBO LIKE THAT TOGETHER SINCE MOSTLY IVE JUST BEEN REDOING MY BIGCHIEF's WHEN NEEDED, IM NOT A BIG ENGINE BUILDER GUY LIKE YOU AND PAT,I JUST
DO WHAT I DO DOWN HERE IN THE BIG CEREAL BOWL FOR ME AND MY CUSTOMERS.

ERIC!
WHY WOULD A JEDI MASTER SUCH AS YOURSELF ASK ME WHAT TYPE OF GASKET TO USE
YOU WOULD'NT BE CHECKING ME OUT TO SEE IF I KNOW WHAT IM TALKING ABOUT WOULD YOU

You just proved my point.

Hey 87aeross
Hows The Big Inch 535 Coming Along? Let Us Know What You Decided To Do,Im Excited To Find Out What You Did. What Car Is It Going In? Are You Putting A Roller Cam In It? Are You Gonna Port The Heads/intake?