RedB.
Well-Known Member
What did ya order for $1058.00 , I was considering the CNC small block heads bare, then have them cut for a 2.055 or the 2.08 but not sure if it would help without more porting to accommodate the larger valve.
DING DING DING SOUND THE ALARM!...
- Thread starter j par
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What did ya order for $1058.00 , I was considering the CNC small block heads bare, then have them cut for a 2.055 or the 2.08 but not sure if it would help without more porting to accommodate the larger valve.
A set of bare heads for my son, intake and exhaust valves, and an intake manifold. And a set of bare heads for me to port and resale.
they are close chambers.....I have a set with 2.055 in a hand ported head......should not be a problem putting 2.08 in them....I would think if you put a bigger valve in their CNC head you would want the bowl area opened up for that valve too..
I have a set of their CNC heads out of the box except I changed out the valve springs on a 360 in the car....Was suppose to race next weekend...but it all was cancel by Gov Steve Suckadick.
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RedB.
Well-Known Member
Have you ran the cnc 2.05 heads on any of your cars ? How do you like them compared to other's you have run ?
DARTGAME
SuPeRcHaRgEd
It’s a bummer all the small block stainless rockers are out of stock. Maybe next year 
Yes...the hand ported head was done by Brian at IMM . Those heads are on a 360 with a MP590 cam in a 71 Dart...Car ran a 10.46 @ 125 .....
the CNC head still have the 2.02....and have not gone down the track....
I got ya beat by a few dollars....bare head at 219......hard to pass up...and the intake too...
future swap meet material
mopowers
Well-Known Member
It’s a bummer all the small block stainless rockers are out of stock. Maybe next year
Did you call them? They may honor the price and give you a rain check.
What bore size would you run a 2.08 valve at? I would think that would be getting close to the point of needing to mill the intake side of the chamber to match the head gasket bore to see the full benefit.
My head fixture on my flowbench is 4.010 and tapped and locate my heads with studs so I can’t cheat and move it over from the wall and I’ve hit 325cfm with a 2.08 valve.
That is killing it! I'm guessing, that's around .700 or so lift? I'm looking forward to the numbers you see on those compared to the CNC flow numbers on the head flow chart.
I posted all of those numbers last year on my Speedmaster heads. And as far as valve size I flowed the 360-1 heads on my 422 on the same fixture and it’s been five years but don’t they have a 2.015 valve.
DARTGAME
SuPeRcHaRgEd
I emailed them tonight, see what happens
Here's what may be a silly question that just crossed my mind. Wonder what they can do for a guy that has a 273 or maybe 318 stock bore (or whatever the reason) that doesn't want a 2.02 valve?
Depends on who you talk to, but I do know if you add any kind of longer stroke to a 318 it makes very good use of a 2.02 intake valve. I think it was Larry Shepherd’s book on the small block Mopar that mentions the physical interference limitations of large valves and 273 sized bores, so it may be viable for a 273.
Yep I've read lots of pros and cons on it. More of a question about how accommodating SM can be.
DARTGAME
SuPeRcHaRgEd
j par
Well-hung Member
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j par
Well-hung Member
DON'T JINX ME! DAMMIT!....lol
Probably ford heads. Lol.
j par
Well-hung Member
Actually if I pay $135 for a set of Ford heads it's a deal...
That's what the site says, but I CCd the chambers on my CNC heads and they're 65cc just like the cast ones.
Get the set with the steel hold downs. They have bronze bushings and better machine work. The ones with the blue aluminum hold downs are unbushed and the adjusters were either stuck or had that oil holes drilled wrong.
Bobzilla
Well-Known Member
If I remember correctly from last year’s sale, we were getting reports of the CNC version come two different ways. Some had untouched cast chambers. Others were CNC profiled chambers, which likely accounts for the difference in size.
Mine were ordered assembled and they do have CNC chambers, but I forget what they measured.
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