440 help!

[lewtot184]

what intake are you using? i'm a little south of indy; where are you in indiana?

 

[1965wagon]

I am running the 5440 edelbrock dual 4barrel inline intake and I am located out of Terre Haute are you going to the swap meet in march!

 

[wyrmrider]

first do not think of 906 heads unless race gas only NOT for street with pump gas
use the KB or Icon reverse deflector or custom pistons that fillup the intake side of the chamber
906 spark plug is in lousy location and chamber is really poor- will detonate no mater what compression on pump gas
do NOT put any money into 906 heads
by the time you put seats and guides in you might as well go Aluminum
unless iron are required for your class or a matching number restore deal

cc your heads BEFORE you start most are bigger than you think they are- especially after you unshroud for bigger valves
DO NOT use the 1.88 exhausts- that's max wedge type heads ONLY use the 1.81
but think - I you can run a bigger intake with the 1.74's do that
however you are limited by valve to chamber wall as well as valve to valve

410 gear you can stay with Hyd
check ONLY with grinders that have lobes for .904 lifters
If thinking comp go to the back of the cataoge- only "purple shaft" hyd are 904 rest are chevy grinds

Howards, Ultradyne, Engle, Crower (all custom not catalog)
check with Mike Jones
fill these out
http://jonescams.com/drag-race/
http://jonescams.com/street-performance/

 

[lewtot184]

I am running the 5440 edelbrock dual 4barrel inline intake and I am located out of Terre Haute are you going to the swap meet in march!

I usually go. i'm using the 5440 in my 65 coronet.

 

[1965wagon]

That is beautiful I cant wait to have mine together when i see pics like that!

 

[IQ52]

You are much better off to start with an aftermarket aluminum head if you can afford them, especially if the class will allow them.. You say, "........I am going to run a set of 906 heads........" so we will take that as gospel.

I've had a little bit of experience with 906 heads. Let us dispel a few false notions.

One, I have personally used 906 heads with 11.9:1 compression on 91 octane pump gas and had no detonation (but you have to be smarter than your cylinder heads).

Two, I don't think you can run a bigger valve with 1.74 exhaust valves, I know I have run 2.25" intake valves with 1.81 exhaust valves in a 906 head on a 9.5:1 compression 451. 'Course it didn't run worth a damn, It only made 554 RWHP, normally aspirated w/ single 4-bbl, on a chassis dyno. I mention this to emphasize....again....you don't need a bunch of compression to make horsepower. I certainly doesn't hurt, but you don't gotta have it.

I wouldn't recommend anything bigger than a 2.20" in a .030" over 440. The bigger valves won't do you a darn bit of good if you don't know what to do with the heads after you install the larger valves. P.S. A bowl hog isn't the answer.

 

[1965wagon]

I can run an aluminum head i just don't really want to.I have other things to buy to finish the car other then spending the extra money on the heads plus right now the car does have a bar so i only really want it to run around the 12.0 index. So im thinking if it makes it through the summer then there will be some upgrades over the next winter but i have the 906s and the guy do the machine work to them treats me really good and is really good with mopar heads!

 

[IQ52]

There ya go, there ya go , excellent!

 

[dvw]

I have a friend that runs a 65 Belvedere with the eddy 2x4 low rise intake, 2 Eddy 600's, home done 906 heads and a .557 Mopar solid. It has roughly 11-1 comp. Runs 11.5-11.6@114-115. My point on the aluminum heads is by the time you're done paying to make 906 work well the Eddys are cheaper. Question for IQ52. How much to do a pair of big valve
906? Am I correct?
Doug

 

[lewtot184]

12.00 index isn't a problem with iron heads. the last "performance" engine I had in my 65 coronet had a good set of iron heads. went with a set of edelbrocks on the latest build and firmly believe the edelbrocks weren't anywhere near worth the money spent for what I was doing.

 

[IQ52]

I have a friend that runs a 65 Belvedere with the eddy 2x4 low rise intake, 2 Eddy 600's, home done 906 heads and a .557 Mopar solid. It has roughly 11-1 comp. Runs 11.5-11.6@114-115. My point on the aluminum heads is by the time you're done paying to make 906 work well the Eddys are cheaper. Question for IQ52. How much to do a pair of big valve
906? Am I correct?
Doug

No, no, no, no, no! The question here is, "How much is the guy who 'treats him really good and is really good with Mopar heads' going to charge him?"

We can make a factory 906 head flow 266cfm to over 340cfm. How much flow is he getting and what is he paying for it. Maybe it is only costing a case of beer. Whatever it is, it is worth it to him! Apparently they will be better than stock heads and less than the cost of aluminum heads.

Less than the cost of aluminum heads (not outflowing).......at this time..........that is the criteria now.

 

[1965wagon]

Trust me i get what you are saying about the aluminium heads but i already have the 906s and when i am done with them i will have about half the money in them as to an eddy! So for me and the build they will work for now especially just trying to run 12.0!

 

[383man]

My old 440 was a pump gas eng that was in my 63 until I put the 493 in. It was a stock bottom end with KB quench pad pistons and 906 heads I ported. It came in right at 10.0 comp and I got quench with the KB pistons but its alot of work using them. I ran the MP .557 cam and a Holley Street Dominator intake with an 850 DP. In my 63 with a 9.5 Dynamic converter and 4.30's with a 30" tall tire it ran a best of 11.49 @ 116 at 3700 lbs. It would usually run 11.60's to 11.70's on normal days. Just thought you might want to know about it. Good luck with yours. Ron

 

[1965wagon]

Thanks Ron I think I will be right where I need to be with this build all your info has been helpful!

 

[383man]

Sorry I reposted that as I forgot I had already posted about it. Its tuff getting older. LoL. Ron

 

[bobtile]

o

 

[dvw]

No, no, no, no, no! The question here is, "How much is the guy who 'treats him really good and is really good with Mopar heads' going to charge him?"

We can make a factory 906 head flow 266cfm to over 340cfm. How much flow is he getting and what is he paying for it. Maybe it is only costing a case of beer. Whatever it is, it is worth it to him! Apparently they will be better than stock heads and less than the cost of aluminum heads.

Less than the cost of aluminum heads (not outflowing).......at this time..........that is the criteria now.

Agreed. Why I asked is for myself and others. To make a choice on whether we would chose the 906 or not. There is also the chamber, plug location, quench issue. Your thoughts?
Thanks Doug

 

[IQ52]

I've made my position clear on this many times........Unless you just want to run a factory iron head, or the rules require it, you are better off, performance wise, getting an aftermarket aluminum head and having it service prepped.

You can get a prepped iron head for less than an aftermarket aluminum head and it will flow less than the OOTB aluminum head.

Once you start getting the iron head up to performance equal to the performance of the OOTB aftermarket aluminum head you are about the same cost as the aluminum head. But the iron head, if done properly, will be more service ready than the OOTB aluminum head.

When you start competing against the aluminum head, the cost of the iron head will exceed the cost of the aluminum head. A pair of Stealth or Edelbrock RPM heads that flow 'bout 340cfm will cost approximately $3280. The same thing in a 906 will cost $5100.

 

[Budnicks]

Thanks IQ52
your insight is always nice to have

 

[dvw]

Thanks for the info.
Doug