Wanting to find out if anyone is using Superflowheads

http://www.hotrodsusa.com/store/superflow.html

The price is certainly right, if the product quality is there. If you have & like the heads what size motor are they on? I'm considering them for a 383 build & would like to get mid 450hp.

 

That $549 price appears to be for the bare aluminum heads (no valves, springs, keepers, etc.). Adding the moving parts ($275) and $48 shipping pushes it to $870. Still pretty agreeable price for a pair of aluminum heads if the parts are all installed and good quality. Add head bolts and gaskets and you are close to the $950 price for the DART Iron Eagle kit avail from Scoggin Dickey (the DART kits include the head gaskets and head bolts).

Worth considering. Would like to see a product evaluation. Are these perhaps the 'Racing Head Service' heads that are being manufactured in Australia area? Just wonderin...

 

Looks like $725 with "parts" also don't forget a valve job, screw in studs and guide plates. Depending on the cost of these the price may not be as good as it first appears. As far as quality, I'm not sure but if I only save $150-$200 I may be inclined to go with a brand that I trust. Will be interesting to see, keep us informed of your choice.

ltlevil

 

These are the ProTopline heads, I picked up a new asssembled set awhile back for $675, but haven't tried them yet. Could be another variation of these though, if so I think they would be pretty decent as they use the same tooling as Dart or AFR heads.

ltlevil

 

The approx $825/pair w/parts is a pretty good retail price ... I can sell australian aluminum for about $770/pair w/parts.

Dart Iron Eagle are iron ... not aluminum. Dart aluminum are identified as Pro 1.

 

Can you explain a bit more of how the ProTopline uses same "tooling" as Dart-AFR? Same foundry ... or Same parts ... or Same tooling? Exactly what's same? Do you have a source you will share for more new assembled ProTopline for about $675/pair?

 

Looks exactly like the ProToplines I have.

 

Correct. I assumed folks would see the 'iron' in Iron Eagle.. Was referencing the kit price as a comparison only. As far as I know, both aluminum and iron heads, from same tooling, flow the same. About the only benefits are weight and perhaps cooling which may allow greater compression on same octane... yet I read that Aluminum's 'loss of heat' is a consideration in power production comparisons (need to convert that heat to power... not just dissipate it).

 

I'll see if I can find the article I read, basically what it said was the facilities used to manufacture the Dart/AFR heads was purchased by another company. The actual pair I bought was off e-bay and now I see the person is no longer a registered member. There was also a thread here that discussed the tooling and manufacturing details. Also I looked back and it was 725 for the set including shipping-675 plus 75 shipping (USD). I'll see what info I still have and pass it along when I find it. Really the reason I mentioned the ProTopline heads was if you are trying to save some money and go with a not so recognized name you can find deals that can save several hundred dollars as opposed to a couple hundred. I'll keep my eyes open and see what I can find.

ltlevil

 

After a quick search here is a set I found fully assembled for less than 800 including shipping. Granted these aren't exactly what we were discussing, but when I bought mine I wasn't exactly looking for ProToplines either I was just looking.

http://cgi.ebay.com/ebaymotors/SBC-C...24921277QQrdZ1

ltlevil

 

These are entirely 2 different foundries. The Pro-Toplines (RHS/Comp Cams) are cast up in Auckland, N.Z. (New Zealand). The other brand (sold under various names) are cast up in Australia. These particular heads work well even though the price would suggest otherwise. We've tested and sold a number of units with these on top. Easily made 440+ HP @ 5700 RPM and 445+ Ft.Lbs. @ 5000. Used a hyd. roller "short" cam unit, 89 octane driver, and 93 octane racer. Thanks Gary in N.Y.
P.S. The runners are 190/195 (measured) and flow 260+ CFM @ .600" lift intake and 170+ CFM @ .600" lift exhaust. They only come with 2.020's and 1.600's. These heads do perform well considering the overall cost. If they show up with larger valves, they are probably being done in the "field". We've seen ad's for 2.050's but can't give results on these pieces. We just built a 406" SB, pump-gas unit with the (RHS's) "Pro-Toplines" and made 580+ HP and 523+ Lb.Ft. Torque. These were 2.080's with 230 cc runners ported "in-house".

 

MR Gofast,
We just built a 406" SB, pump-gas unit with the (RHS's) "Pro-Toplines" and made 580+ HP and 523+ Lb.Ft. Torque. These were 2.080's with 230 cc runners ported "in-house".

 

Do you have the rest of the specs on that 406?

 

This was posted on the Camaro site right after the dyno test. It was a response to the following:
Quench & Ring Gaps Just how important?
On the dyno Friday (the first of 6 identical units), delivered Saturday, it's already in the car. A 406" SB based on a Dart block, Ross pistons, with 23 degree (235 cc-in house ported) Pro-Toplines, a Blue-Racer solid roller, Blue-Racer 1.6/1.5 Rockers, Eagle 4340 (internal) crank, 5.850 rods and a "nylon" timing gear set. Super-Victor and a 4500 Holley. 10.95 (measured) C.R. Runs fine on 93, customer will be using 100 unleaded for racing however. Made 580 HP @ 6600 and 523 Ft.Lbs. @ 5500. The main reason for posting these results is to show that the mfr's. are not always "right-on". The ring gaps in this unit are .018" top and .013" second, with low-tension oil rails. There is no vacuum pump, nor are the Ross pistons anything special (e.g., no gas-ports, etc.), right from the box. The "quench" area is huge. P/Deck is .032" and Corteco head gaskets are .038". We have a total of 34 degrees timing for the entire test. No problems at all. Only requirement was 2.000" primaries, it wanted nothing smaller, this was the only other item (header size) we had time to test, in order to make the delivery schedule on time. Thanks, Gary in N.Y.
P.S. (Add) We can deliver 600 HP on 93 (on a Dart block platform only). There are NO "fancy" parts in these units, everything from the boxes. The next ones up will recieve a bit more "flogging". 2 of the remaining 5 will see 6.000" rods. We do see 600+HP (on 93) around the corner. The heads performed flawlessly. These 400's will certainly be a "ride". Real nice combo!

 

happen to know the cam specs as well? I just picked up a 400 that Id love to build like that. Thanks. Justin

 

I went ahead and bid on a pair on Ebay. Should be nice on my 377 for my 1970 Monte Carlo. The 377 is simply a new GM block-standard bore with the 3.75" stroke. The cam is a 215/225 duration with about .450" lift. Should be a torque monster.I'm guessing at least 425 ft/lbs of tq and about 370hp. The intake is an Air Gap with 6 inch rods and internal balancing with about 9.6:1 CR.

 

I have a pair sitting right next to me.

A little clean up work in the throat area, especially in the exhaust side looks like it would do wonders.

Some TLC will do wonders. If you look you can see how the ports dont match up with the throat and need some blending. If you could see in the intake ports, if you run finger up into the throat you can feel where the machining done to the throat ends and needs blended into the port, because there is a substantial lip in there. But for the 550 bucks I paid its worth it to go buy a die grinder and blend them. Or pay a guy 2 towns over to do it.

I posted a thread with pics awhile ago.
http://forums.corvetteforum.com/show...6&forum_id=119

 

NO! NO! NO! these heads are NOT! Pro Topline heads. They are CHINESE! made heads. Pro Topline is based in New Zealand and now owned by Comp Cams after going through bankruptcy last year. These heads may be OK but, the intake ports are in a strange location with no presently made intake manifold working. LOOK at the Ebay ad, they say PRO heads as they know they would get their A** sued off if they called themselves Pro Topline. Buy them and let us know how they are after a few thousnad miles, I will stick to AFR, Edelbrock, Comp Cams, Dart, Brodix for my parts. Comming soon: Chinese crate motors, I can just see the day!

 

I do have a set of 200cc Pro Toplines for the Vette. I am purchasing a set of these Superflow 190cc's for the Monte Carlo. Website also says you use a standard port intake.

 

Do you know what brand your heads are? They don't look like the Superflows or the Pro Toplines that I've seen.