lilbowilson

iTrader: (2)

Does anybody own a set of Superflow heads that they sell on ebay? If so how good are they and what HP gains have you've seen with them? I'm just wondering because I own a set and I won't be getting my car up and running until spring time. I would love to see some dyno results if any.

lilbowilson

iTrader: (2)

Here are the flow numbers for these heads. What are your opinions about them?


INTAKE FLOW SPECIFICATIONS



0.200" Lift
117.8 cfm

0.300" Lift
168.7 cfm

0.400" Lift
214.3 cfm

0.500" Lift
238.5 cfm

0.600" Lift
258.7 cfm

0.700" Lift
254.5 cfm

EXHAUST FLOW SPECIFICATIONS

0.200" Lift
85.8 cfm

0.300" Lift
119.9 cfm

0.400" Lift
146.2 cfm

0.500" Lift
159.2 cfm

0.600" Lift
162.2 cfm

0.700" Lift
159.8 cfm

THEGENERAL

you have a link to these?

lilbowilson

iTrader: (2)

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7946275372&category=33617&sspagename=WDVW

lilbowilson

iTrader: (2)

I can't seem to get my link to work! If you go to ebay and just type in superflowheads as one word you will see them. I heard these heads were made with a Pro Topline design. Pro Action also makes a set of these for the same price and design.

StealthElephant

Click

lilbowilson

iTrader: (2)

Yep! thats them. How much HP do you think they are
capable of making?

Brisk

iTrader: (25)

I'd really like to know more about these heads too.. I was inches away from buying a pair. There is currently a buy it now auction for a pair that is under $500... but I couldn't find any 'real' information about these heads from a source outside of ebay.

I ended up buying a complete pair of aluminum corvette heads instead because they'll work very well for my setup...

On a side note, where can I buy some *nice* center bolt valve covers?

anesthes

iTrader: (12)

Do a search. THey are junk. We covered this..

-- Joe

ljnowell

Yep, there is at least one other thread going right now covering the difficulties of getting them to work. Bad problems getting intakes to line up, some intakes cant be ported enough to match, not to mention gasket issues. Someone also related a problem with head bolt holes. They certainly dont seem worth the risk to me.

Brisk

iTrader: (25)

Well i did find this other thread which discusses problems..

I've done some reading now on other forums and I have come to the general concensus that they are indeed carp-ola, at least in their stock form - yet still nothing special once worked on, cleaned up, and ported out.

I tossed in a bid earlier today and wound up winning a set of aluminum L98 heads from a corvette, I believe I will be much happier with these instead

anesthes

iTrader: (12)

If they are the later l98 heads with the 113 casting, they are an awesome head.
With some porting, slightly larger valves, they'll outflow a lot of popular iron heads such as sportsman, double-hump, etc.

Lingenfelter has built some pretty high output street motors (450-500hp n/a) with these heads.

-- Joe

lilbowilson

iTrader: (2)

Well I don't agree! I have a set and when I installed them I didn't run into a gasket problem they work well with my HSR intake. An looking at the flow numbers they out perform L98 heads easily. Please with L98s you have to upgrade springs, machine the seats for bigger springs, get bigger valves and pay to have a 3 or 5 angle valve job.

With the heads I bought for $840 I have springs that are good to .600 lift, a 5 angle valve job, and 2.02/1.60 valves. If thats not better than L98 heads then what is for the price? Also I've read the threads that you mention and yes there seem to be some installation issues but what wasn't covered is performance. I would like to hear from some one thats actually has these heads an has tested them out on the street. To say that their crap isn't a valid statment especially when you don't own a set and haven't seen them run

cam-

There is no doubt that even by just looking at the pics of these Superflows they hold at least two advantages over the L98 heads. First they clearly have a fast burn chamber which the L98 does not have so thats one distinct and substantial advantage that cannot be argued. Second the ports are tall... way tall which anyone can clearly see in the pics and widening ports does very little for performance but raising the window gives a much better shot through the bowl such as the trusty Vortec head which also have narrow yet tall ports and these superflows look to be even taller. These heads clearly hold at least these two advantages over the L98 just from looking at the pics.

What we need is someone to take theirs to a flow bench and a couple of guys to get dyno tested and post up their combos so there can be some accurate information on whether or not the performance of these heads is junk. Until that happens anything said here is anyones guess not fact.

Now as far as construction quality goes... I would seriously doubt that a $500 dollar set of heads with no warranty does not posess the same standards as an OEM L98 head designed for many years of hassle free street use. This issue may be big enough to relegate these heads to the junk pile and they look to need some tweaking and planning to bolt up properly but... there were plenty of issues with the Vortec head at first when the first guys were drilling them for standard intakes etc. But the performance was still there and now there are solutions. If these heads perform as claimed there will be solutions to these issues found too.

About the Lingenfelter remark that they have made huge horsepower with the L98 head... Guys in the 70's made huge power with ported "double hump" heads too but thats old school tech and there are many new advantages that modern day heads offer that puts the "double hump" head to shame. Heck even stock Vortec heads will out flow a heavilly ported set of the famed "double hump". The superflows are "Proaction" knock offs and proaction was distributed in the US through AFR for years and rumour has it that AFR stopped distributing them cause they were performing better than AFR's own brand. So even if these heads are only close to the proaction they cant be total junk with regards to performance. I would be shocked if they did not out flow the L98 head in stock trim substantially.

I'm not trying to flame and clearly there is some excellent performance to be had with the L98 head but not until you get into some serious porting. So why would anyone want to buy used L98's with no fastburn technology and then have to port them to make power when you could try these Superflows for the same coin and get a brand new head that holds at least two advantaged over the L98? One thing to consider too is that if they were not so cheap and priced comparably to say the trickflow 23's and there was some nice magazine spread marketing on these that showcased them on a couple of buildups that no one would say they were crap. But that all cost money... big money which would drive the price up. Just my two cents. Lets see some independent flow numbers before we drop the hammer on these Superflows.

anesthes

iTrader: (12)

The heads flow less than sportsmans. They are crap, get over it.

-- Joe

lilbowilson

iTrader: (2)

Well from what I can see they flow about the same as Sportman heads and even better than the SR Torquer heads at .400 and .500 lift. Which is were my cam lifts too and the fact that they are the same price as those heads an ALUMINUM makes them the better choice in my opinion anyways. Plus once I have my heads ported and polish and some bowl work done I would have put $1100 total into these heads which is about the same price of any new head that hasn't had any work done to them.

None of the threads has mention any flow number after head work or performance gains. Even L98 heads have made 450+ hp after head work so you mean to tell me these heads will still be crap after port work and show no benefit from it. Anesthes even you were interest in these heads at one point in time. The guys in those threads haven't finished their projects yet and tested their final product. Once their finish an get sorry ET's then you can say that their crap. So please I would like to here from people that are using these heads and not critisim from someone whose never own a set.

DFI79MC

iTrader: (1)

I needed a good laugh today, thanks!

Who told you that rumor, a Pro- rep? lol Did it ever occur to you that just maybe AFR dumped Pro's because they're crap? Much like the Chinese intakes that AFR distributes?

cam-

Your welcome

Its a rumor circulating around out there. If they were crap than surely the almighty AFR would have known that before they ever started selling them no? Why would they want to get involved in selling junk and possibly tarnish their highly regarded name? Why did they give such grief over the name "Pro Action" when they were done with them if there was no worries of competition? If you know better then I'm all ears and would like to know. Like I said its just a rumor.