All Pro's.....
 

Are here picked 'em up last night and damn are they sexy... there going to our engine shop to be tuned up hopefully they'll be done in a few weeks and I'll put up my numbers...

Any flow #'s/port sizes?

Are these new castings or just ported factory pieces?

They have seats and guides thats it... they are All Pro's own casting...

All Pro's should flow close to 300 CFM out of the Box, unported. Once you turn a good handporter loose on them there is no telling where you can go. They come clearanced for Shaft Mounts, Bigger Springs, 3/8ths pushrods, yadda yadda yadda. Also you can get the chamber size any way you want. They're about $1700 bare depending on who you buy them from.

So much money.... But so PIMP

3/16 meat in all directions for your porting enjoyment, if i recall. No unsafe water jackets.

Please post results as soon as you get them. I'm debating between these and the AFRs.

Where could one go about finding information about the all pros?

Josh S.

Just ask :)
Intake
.200 130.4
.300 196.8
.400 244.3
.500 277.7
.600 293.1


The exhaust numbers impressed me

.200 109.8
.300 166.9
.400 214.0
.500 232.6
.600 246.9
.700 254.3
This is an "as cast" head, no porting. I was told there is enought material in the intake runners for a 300cc head. Talk about a head that will grow with you!

SPECS
Intake port 230cc
Exhaust 88cc
Chamber volume 64-72cc
Intake valve diameter 2.02-2.10
Exhaust valve diameter 1.57-1.60
Valve length stdto+.100

OPTIONS
Copper blended seats
7mm bronze guides
O-ring machining for valve covers

FEATURES
3/4" + deck thickness
Improved water passages
More room for increased porting for the newer 421ci + motors
Reinforced for supercharged and NOS applications
Large spring pad suitable for up to 1.625 springs
Strong reinforced rocker pads for less flex andfits updated shaft systems
Large diameter magnum valve seats that will accept up to a 2.150&1.625 valves
Longer, more stable special removeable bronze guides for std 8mm & optional 7mm valves
Suitable for offset pushrods/rockers for a wider port thru pushrod area
Raised rocker rails for improved rocker arm clearance
Specially designed for excellent flow "out of the box"
Redesigned hi-flow chambers
Longer intake face available, so milling head for small chambers is no problem's.

Pricing will be around $1750 w/o parts. This is an almost 300cfm as cast head minus parts (seats and guides are included). For roughly $400-500 more we can sell them complete.

Allproheads.com has some info as well as contact information... they are not associated with Pro Top line... The heads pictured on their page will give you some insight into the badass stuff they make..

Rob,
Is the valve guide spacing and valve angle the same as stock? Also, what size valves and test bore were the sample ports flow tested with? Is the spark plug in the standard location and can stock rocker arm assemblies be used?

Thanks,

Richard

Looks like a good FI, nitrous head from these ex. flow #'s.
What are the runner volumes?

The runner volumes are listed in Rob's post.

Richard

Richard, you can speak to Nick Norris at Callies, 419 435 2711, he is very knowledgable about the head.

Chris

They do look like they are a serious piece.

:emb: Sorry, late night missed that.

Thanks Chris. I'll check with him on monday.

Richard