$50 is plenty cheap! I think I paid $80 4 or 5 years ago. I think all 3 of our heads were tested on #3 cylinder. I have no idea why? I just know Mike did # 3 and had the others done on the same cylinder.
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| Head Flow Infomation Wanted https://slantsix.org/forum/viewtopic.php?t=67075 |
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| Author: | DadTruck [ Wed Feb 08, 2023 12:10 pm ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Rick, I flowed a slant head for Volaredon that had IIRC 318 valves and garage porting, I don’t remember what seats he had in it. It had decent numbers. Maybe Don will see this and post the info. |
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| Author: | Rick Covalt [ Wed Feb 08, 2023 1:56 pm ] |
| Post subject: | Re: Head Flow Infomation Wanted |
The Engine builder valves are 1.7 & 1.4 or 1.44. I have that set up on my "back up" race engine that I installed in my truck. I spent @ 12-15 hours on the porting if I remember correctly. But I always wished I had it flowed. However it is not likely I would pull it just to test it. |
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| Author: | volaredon [ Wed Feb 08, 2023 3:08 pm ] |
| Post subject: | Re: Head Flow Infomation Wanted |
I have that info at home , I'm not there right now. No 318 valves, just 318 springs. I have the SI oversized valves. Same 1.70/1.44 sizes you referenced. |
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| Author: | Rick Covalt [ Wed Feb 08, 2023 3:10 pm ] |
| Post subject: | Re: Head Flow Infomation Wanted |
That would be great info! Thanks |
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| Author: | Rick Covalt [ Wed Feb 08, 2023 5:52 pm ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Quote: 200 CFM is very good, and should be good for around 300HP
If HP calculators are anywhere near correct, Ryan's 11.00 runs produce @ 324 HP by ET, and @ 308 by mph.
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| Author: | hyper_pak [ Thu Feb 09, 2023 8:07 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
I contacted the flow bench guy here and he is ready to look at my head, the one off the engine, not the other one. $50 bucks to do 1 intake and 1 exhaust. I have no idea if that is the going rate, but sounded reasonable to me. I will let you know what he finds. |
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| Author: | Greg Ondayko [ Thu Feb 09, 2023 8:12 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Quote: I contacted the flow bench guy here and he is ready to look at my head, the one off the engine, not the other one.
Not sure of the going rate, but it sounds reasonable to me as well!$50 bucks to do 1 intake and 1 exhaust. I have no idea if that is the going rate, but sounded reasonable to me. I will let you know what he finds. Now the real question... if it flows poorly how do you know what to do? I suppose you could mess a head up real good by taking too much material off or off in the wrong place. Greg |
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| Author: | hyper_pak [ Thu Feb 09, 2023 8:29 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Yes, the age old question. I will listen to his recommendations and take it from there. This head was a last minute build after I had those 2 other heads with problems. So I was not too concerned about peak performance. I have another here that I will be installing with bronze walls and thin stem valves. I plan to just do minimal porting in all the recommended areas, nothing overly excessive. |
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| Author: | Rick Covalt [ Thu Feb 09, 2023 8:56 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
$50 is plenty cheap! I think I paid $80 4 or 5 years ago. I think all 3 of our heads were tested on #3 cylinder. I have no idea why? I just know Mike did # 3 and had the others done on the same cylinder.
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| Author: | slantzilla [ Thu Feb 09, 2023 9:25 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Just a guess, but 3 or 4 would be the easiest to get the head mounted on the bench. 
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| Author: | Rick Covalt [ Thu Feb 09, 2023 10:08 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
That makes sense |
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| Author: | CNC-Dude [ Thu Feb 09, 2023 11:09 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Yes, trying mount it on #1, especially with a heavy Slant head would turn the flow bench over...! LOL |
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| Author: | hyper_pak [ Sat Feb 18, 2023 8:57 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
I finished the engine on my son's Honda last week so now back on the Colt. I dropped the head off at the flow bench yesterday. He was not too impressed with my 318 valves and the guides in the head. Neither am I but that was not the reason for dropping it off with him! I was surrounded by about a million aluminum heads in his shop. I guess it's easy to make horsepower when summit-edelbrock-trick flow-etc drop race ready parts off at your door. Details to follow. |
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| Author: | DadTruck [ Sat Feb 18, 2023 11:24 am ] |
| Post subject: | Re: Head Flow Infomation Wanted |
linking this post per Stan's request https://www.slantsix.org/forum/viewtopi ... of+secrets |
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| Author: | slantzilla [ Sat Feb 18, 2023 2:00 pm ] |
| Post subject: | Re: Head Flow Infomation Wanted |
Stan, actually he's busy because those shiny aloominum heads are not race ready when delivered. 
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