some flow numbers off of the new head

Hamilton Cams

Hamilton Cams

ignorant
Joined
Jun 28, 2007
Messages
2,639
stock intake/exh HC intake/exh

.050-34.9/26.9-38/35
.100-62.4/54.7-65.1/75.9
.150-83/82.9-89.3/93.2
.200-101/125.6-112.4/111.1
.250-118.4/139.8-138/130.4
.300-130.6/144-156.1/145.6
.350-138.1/147-178/160.1
.400-142.6/149-200.1/175.8
.450-144.2/151-215.6/185.3
.500-146.5/151.2-223.4/189.7
.550-146.6/Na- 240.9/192.2
.600- -241/196
.650- -243/198.5


This is a stock out of the box head with 1.850" intake and 1.750" exhaust valves. This is also an untouched/unported head with no valve work.

This head likes lift, especially the intake. At lift points above .600" swirl is GREATLY increased. There will be a learning curve with this head and power production, but I think it will help a lot of people realize greater power, especially at higher rpm.

I would like to thank Greg Young with ZZ fabrication, once again for his expert port design. I couldn't have done this without you.

Zach
 
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Any chance the price will ever come down to a govt salary level? LOL I'd love 2 of these.
 
I realize that the first batch went primarily to racers and pullers that won't give out any data, but will there be any testing or info taken from a moderate performance truck that is already in the 900 to 1100 hp range. That would be a nice range to see what the addition of a mildly ported Hamilton head would offer performance wise.
 
Madmike, My goal is to eventually get these heads sub 2k. I have a pretty heft tooling bill I have to pay off first.

Ron, I will be giving out more data as time goes on. The reason there is not a lot of data at this point is that Van has still not run his head that I gave him 6 months ago. He's a pretty busy man during the season. Our other test truck is having fuel pressure issues at higher rpm which is why we flat lined it above 3k.

I will say below 3000rpm we gained just over 30hp until the data logger showed 0psi the rest of the run. The better flow makes boost come on a LOT earlier.
 
RonA said:
I realize that the first batch went primarily to racers and pullers that won't give out any data, but will there be any testing or info taken from a moderate performance truck that is already in the 900 to 1100 hp range.
Click to expand...



and I was beginning to think 500whp was moderate performance nowadays:hehe:
 
Sadly, 600 hp is just a stock truck with a chip nowadays. 800 is just an additional $500 in nozzles and a $650 dollar turbo. It's just the way it is. Breaking 1000 on fuel draws less attention than a tire thread. Breaking 1000 with nitrous isn't worth posting.
 
RonA said:
Sadly, 600 hp is just a stock truck with a chip nowadays. 800 is just an additional $500 in nozzles and a $650 dollar turbo. It's just the way it is. Breaking 1000 on fuel draws less attention than a tire thread. Breaking 1000 with nitrous isn't worth posting.
Click to expand...

In the world of the interweb certainly:hehe:
 
Yep, well no really. The production pieces are 12CFM over the prototype pieces. With the old prototypes we saw 275-278 CFM @.650" with a decent port job.

Runner manifolds, larger valves with a 6.7 bore, The port designer is expecting the port to max out north of 320cfm with some trick work. The good news, you can still run water, and hot laps should not be a problem.
 
zach will you be around the shop next week? might have to stop by on my way thru and check one out
 
RonA said:
Sadly, 600 hp is just a stock truck with a chip nowadays. 800 is just an additional $500 in nozzles and a $650 dollar turbo. It's just the way it is. Breaking 1000 on fuel draws less attention than a tire thread. Breaking 1000 with nitrous isn't worth posting.
Click to expand...

Not really.

NickTF said:
In the world of the interweb certainly:hehe:
Click to expand...

Win!
 
9724VF350 said:
Any full tilt port and polish flow numbers?

For the new head of course.
Click to expand...

Still no full tilt numbers, but I played around with one of the intakes for 45 minutes or so and here is what we came up with. Oh yeah this is on the little 1.850 valves. With a 2.02 valve on a 6.7 bore and our new CNC job these are going to be hard to beat! I think the 320 CFM estimate was a littl conservative. All tests were done @ 28"

.050" 40
.100" 74
.150" 95
.200" 121
.250" 150
.300" 181
.350" 215
.400" 244
.450" 265
.500" 261
.550" 272
.600" 289
.650" 300
.675" 311
.700" 290
 
Hamilton Cams said:
Still no full tilt numbers, but I played around with one of the intakes for 45 minutes or so and here is what we came up with. Oh yeah this is on the little 1.850 valves. With a 2.02 valve on a 6.7 bore and our new CNC job these are going to be hard to beat! I think the 320 CFM estimate was a littl conservative. All tests were done @ 28"

.050" 40
.100" 74
.150" 95
.200" 121
.250" 150
.300" 181
.350" 215
.400" 244
.450" 265
.500" 261
.550" 272
.600" 289
.650" 300
.675" 311
.700" 290
Click to expand...

Are the oil/coolant passages going to require some massaging to line up with a 6.7 block?
 
Dunno, I'll have to check on that.

Call us at the shop sometime and I will get you all of the info you need.

Had a meeting with Greg young from ZZ fabrication tonight and got some new ideas for some port configurations. Needless to say, these are exciting times.

Zach
 
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