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aluminum bbc heads

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heads

  • Brodix

    Votes: 9 32%

  • AFR

    Votes: 19 68%
  • Total voters
    28
  • Poll closed .
1 - 20 of 21 Posts
H

hferris

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260 Posts
Discussion starter · #1 · (Edited)
I have been kicking around the idea of switching from heavily ported 840 heads to aluminums. If you guys had to choose between the AFR 305s and the Brodix 295s as a replacement for the iron 840s which way would you go? They are very simalar in price from summit.. Also what kind of gains would I expect to see? Aside from the weight obviously:D


4 bolt 396
0.30 over,
12.5:1 Arias domed pistons
Stock steel crank
Dimple rods 3/8 ARP Wave locs
Solid roller 248/254 .680/.663 108c
840 heads heavily ported 2.25 1.88 valves
Weiand Team G
Holley 850
MSD 6AL
Hooker Super Comp 2 1/8" primaries 3" collector
 
#5 ·
hferris said:
I have been kicking around the idea of switching from heavily ported 840 heads to aluminums. If you guys had to choose between the AFR 305s and the Brodix 295s as a replacement for the iron 840s which way would you go? They are very simalar in price from summit.. Also what kind of gains would I expect to see? Aside from the weight obviously:D


4 bolt 396
0.30 over,
12.5:1 Arias domed pistons
Stock steel crank
Dimple rods 3/8 ARP Wave locs
Solid roller 248/254 .680/.663 108c
840 heads heavily ported 2.25 1.88 valves
Weiand Team G
Holley 850
MSD 6AL
Hooker Super Comp 2 1/8" primaries 3" collector
Click to expand...
=
Hi Hollis
While I sell both heads I think the Brodix is a better fit for your engine
And if you don't think they will make power just look at Bob West's car
He has Ovals on his 500" engine & it seems to run pretty fair

The Brodix 270cc oval is a much better match for your baby rat but the rectangular one will work if you already have an intake & need to use it.

And for the next two weeks the Brodix heads are on sale from us ;)
Give me a hollar if I can help with either head,,,
As you know we have pretty fair pricing on both AFR & Brodix, especially the Brodix right now,,,,

BTW, I still think those headers are too big for your engine :D
 
#8 ·
FourEightyNine said:
Foul play Mike, you arent allowed to pick a head that isnt an option.:D

Thats like picking option E on a A-D test.:thumbsup:
Click to expand...
=
Nah,,, I sort of picked one
Brodix.. just don't tell Tony :cool:

And everyone here knows how I feel about AFR heads,, it is my first choice for the majority of the stuff discussed here,,, just not for a 400" mini rat
Now if Tony would just finish the AFR oval,,,,,

How's that for covering my ass,,,, :D
 
#9 ·
Hey Mike what head do I get to dream about for my 540? Since your up late and I need something to dream about. Tell the pack I said hi....
 
#10 ·
Better he only have to buy heads once. He will likely go bigger inches soon enough and will have a good head to start with then. AFR. Wolfplace is looking after your immediate interest.
 
#11 ·
aukai said:
Hey Mike what head do I get to dream about for my 540? Since your up late and I need something to dream about. Tell the pack I said hi....
Click to expand...
=
I will know better after I dyno the next one ;)
But it will be AFR,,

Or we could always put a set of them Chinese PC specials on,,,, just think of the weight you cold save,,,,,, l:)

The gang says Woof,,,
 
#12 ·
There you go giving me nightmares YIKES....:boxing::D
 
#13 ·
Wolfplace said:
=
I will know better after I dyno the next one ;)
But it will be AFR,,

Or we could always put a set of them Chinese PC specials on,,,, just think of the weight you cold save,,,,,, l:)

The gang says Woof,,,
Click to expand...
oh thats just so not right lol hey Mike I want to know about sending you my 350 block for a 377 or 383 build.
 
Discussion starter · #17 ·
Thanks for the replies!! Back to part 2 of my question. What real world gains will I see over the irons? I'm looking for numbers if possible, or stories of people who switched from irons. Are these heads really worth ONE THOUSAND DOLLARS EACH? Mike, can't I use my rect port Team G on the Brodix ovals?
 
#18 ·
10secBu said:
You left the best ones off your list.

Carl Foltz Engineering aka CFE/BMF sportsman. 310cc is the best available CNC box head out there.
Click to expand...
=
Also without question one of the top of the line heads, I think it would be a toss up which was better between this & the AFR 315 & the BMF 310
But not for a 400" engine in my opinion

Hell, the last 470" engine I did made peak power at 6900 & this is with the 294cc RR so why would you want to but a 10cc bigger head on a 400" engine?
Unless you want 8000 ;)

469, (4.320x4) 11.0 compression, Brodix RR 294cc Rect heads with CNC chamber, T&D 1.7/1.7 shaft rockers, Ede Victor with Pro System's Dominator, 2" dyno header w/3.5" collector to 6" exhaust, fuel was 50/50 91pump & Phillips 110
Custom Comp cam 254/262, .703 lift, 110 sep, 106 ICL


RPM CHP CTRQ
3300 275 438
3500 302 453.5
4000 385 506
4500 476 555
4800 512 560.4 PK TQ
5000 529 556
5500 585 559
6000 618 541
6500 656 530
6900 685 529 PK PWR
7000 682 522
 
#19 ·
hferris said:
Thanks for the replies!! Back to part 2 of my question. What real world gains will I see over the irons? I'm looking for numbers if possible, or stories of people who switched from irons. Are these heads really worth ONE THOUSAND DOLLARS EACH? Mike, can't I use my rect port Team G on the Brodix ovals?
Click to expand...
=
Almost impossible to answer, it just depends on how good your heads really are

How much money the new heads are worth is a question that is totally up to you ;)

Yes, you can use the Team G on the Brodix ovals, this has been shown to work very well over the years even though everything we think we know about air flow says it won't
As I have said before, engines sometimes do not read the same magazines or frequent the same internet sites we do :D

And an intake change is pretty easy at a later date ;)
 
#20 ·
If you have no intentions of changing pistons, I think that you should make sure that the "dome" will be compatible with the chamber. I think that the AFR's are heart shaped.
 
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10secBu
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