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View Full Version : BBC alum head recomendations

Alss
02-25-2010, 04:59 AM
Looking to buy a decent pair of aftermarket alum heads..recomendations?..going to support a 489/496 combo..thanks

ALbert
acelr8
02-25-2010, 05:13 AM
Have had great results with the Dart 325s and the Edelbrocks.Both combos with hyd rollers make 600/600.
Good luck and pm me if you want. Jeff
Mr. Chevy
02-25-2010, 05:18 AM
Edelbrock is the way to go!! http://www.yenko.net/ubbthreads/images/graemlins/biggthumpup.gif

Rich http://www.yenko.net/ubbthreads/images/graemlins/beers.gif
Kim_Howie
02-25-2010, 05:48 AM
I like my Dart heads 816 hp Been together 3 years............set the valves once!!!!!! Thats it.
OK maybe replace a plug once in awhile.
VintageMusclecar
02-25-2010, 06:04 PM
What are your specific HP and/or performance goals?

Eric
Alss
02-25-2010, 06:43 PM
[ QUOTE ]
What are your specific HP and/or performance goals?

Eric

[/ QUOTE ]

street strip car..would like around 550-600hp
PxTx
02-25-2010, 06:53 PM
Just curious when we speak about HP goals on this forum, are we usually talking about WHP as measured on a chassis dyno? Just wanted to clarify cause the delta in this range would be about 120 hp.
Chevy454
02-25-2010, 06:54 PM
[ QUOTE ]
[ QUOTE ]
What are your specific HP and/or performance goals?

Eric

[/ QUOTE ]

street strip car..would like around 550-600hp

[/ QUOTE ]
Shouldn't be too much of a problem with any set of heads considering your cubes...the killer port velocity of a worked set of ovals would make for a fun street car with plenty of boogie.
VintageMusclecar
02-25-2010, 07:06 PM
[ QUOTE ]
[ QUOTE ]
What are your specific HP and/or performance goals?

Eric

[/ QUOTE ]

street strip car..would like around 550-600hp

[/ QUOTE ]

You can easily make that with a set of OEM heads, oval or rectangle.

If you want to go with aftermarket heads, I'd look at either the AFR 305's (http://www.airflowresearch.com/index.php?cPath=68_71) or the Brodix Race-Rite's (http://www.brodix.com/heads/raceritebb.html).
427.060
02-25-2010, 08:56 PM
What about a set of the GM 077 cast heads?
James
1969l78
02-25-2010, 09:13 PM
I have dart heads on my 725 hp pump gas street car and drive it everywhere.
Alss
02-25-2010, 10:56 PM
After much debate......AFR 305's..CNC ported http://www.yenko.net/ubbthreads/images/graemlins/naughty.gif
VintageMusclecar
02-25-2010, 11:36 PM
Excellent choice.
1969l78
02-26-2010, 10:10 PM
Check these guy's they hand port & polish there heads. Did my car and can't beat stuff done by hand.

http://www.rollingthunderz.com/super-cylinder-heads.shtml
SuperNovaSS
02-27-2010, 02:39 AM
Why do you say you can't beat stuff done by hand? AFRs are awesome. A buddy and I went to their shop years ago to pick up a set of heads he ordered for a Mustang. I asked for a tour. I was very impressed.

Jason
1969l78
02-27-2010, 03:53 AM
Just an opinion.

Look on the link and read the part about the diffrence in CNC porting vs. hand porting. just an opinion and it makes alot of sense. Better flow on hand ported and more accurate when done by hand
RichSchmidt
02-27-2010, 05:59 PM
Hand porting is only as accurate when you measure every part of each port as you port them and get repeatable results based on a known head design.I dont care what anybody says,I have bee hand porting heads in my garage for years,and if you take a set of really well designed heads and plot them out on a computer and have a CNC machine duplicate what you enter,you will be hard pressed to get the same results with any level of repeatabitly working by hand.Hand finishing the CNC work is criical,but once you have a port design that works,I think the CNC machine is the best way to dulicate it.If you have a big shop and want t know how a head is going to respon to moving the port a set amount,it is much easier to do it by changing the design in the CNC program then tryng to guesstimate it by hand.

What I do today could best be descibed as hand finishing heads.Bowl blending,or widening the short turn,but a good set of CNC heads from a knowlagable maufacturer like AFR is leaps and bounds ahead of what most hand porters can do.Add hand finshing to the CNC head and you wont touch it by hand especially for the price
1969l78
02-27-2010, 06:24 PM
Like I said just my opinion, I have seen alot of work from that shop on same bad azz street cars 900 hp running on pump gas with there heads. I will take the hand job http://www.yenko.net/ubbthreads/images/graemlins/no.gif http://www.yenko.net/ubbthreads/images/graemlins/naughty.gif http://www.yenko.net/ubbthreads/images/graemlins/haha.gif http://www.yenko.net/ubbthreads/images/graemlins/haha.gif
EZ Nova
03-06-2010, 05:25 AM
I can tell you the stuff that come out of "Thunderz" is just that, IT THUNDERZ! The things will work.

As far as CNC stuff, yes it works on some "generic" stuff, but it's not all that it's cracked up to be. I've been CNC stuff for 20+ years now.

Now as far as heads for this 496, I would look at RHS 320's or Race Flow Development Victor "small bore" Eddy's. I can tell you this, I would NEVER put the 305's on MY 498 as the things would stop at like 5000 RPM!