SBC Dart Pro 1 heads & World Products Motown Intake

[1971silverchevy]

I am selling a pair of Small Block Chevy aluminum heads.

These heads had a full port job performed for maximum performance.
All work was done by T-Flow cylinder head & development out of Florida.
I had these heads built for a 700hp 383 sbc, but i am going with a different combo now.
Included with these heads is all paper work with flow results before and after, ARP head bolts, Dart stud girdles, Manley push rod guide plates, Valve covers, Valve cover gaskets, Comp roller tip rockers.

Never bolted the heads on to try them out after all work was done to them.

Cylinder Head Information:
Type: Aluminum
Degree: 23*
Spark plug position: angled
Combustion chamber size: 64cc
Manufacturer: Dart
Model: Platinum Pro-1
Intake valve diameter: 2.05"
Exhaust valve diameter: 1.60"
Exhaust port Location: stock


These heads were used for 1 year and maybe 4000 miles as were the head bolts, stud girdles, pushrod guide plates, roller tip rockers on a 383 sbc producing 500hp before i removed them to get the work done to them. They started out as 215cc castings and now are 240cc.
Included with these heads is all paper work with flow results before and after,
ARP head bolts
Dart stud girdles
Manley push rod guide plates,
Comp roller tip rockers.

Never bolted the heads on to try them out after all work was done to them.

Cylinder head specs:
All test's performed on a 4.125 bore
Head flow: 28" of water
Airspeed: 349. fps ss/floor

Throat set at:
Intake: 90.2%
Exhaust: 90.0%

Intake flow stock:
400" lift: 230
700" lift: 277

Intake flow ported:
400" lift: 250.6
700" lift: 313.2

Intake port volume:
215cc stock
After porting now is 240cc.

Bowl to guide area :
comes in at 97.6%.

Valve springs:
Comp Cams.
These are new springs.
Springs are good for solid roller cam up to .650" lift.
Manley spring locators part # 42466-16
New Viton metal clad valve seals 11/32 x .530"
Keeper type 10 degree + .100"
Coil bind height intake: 1.110" exhaust: 1.110"
Valve spring open pressure(int./exh.) both come in at: 450# @ 1.170"
Valve spring seat psi(int./exh.) both come in at: 200#
Valve spring installed height(int./exh.) both come in at: 1.800"
Diameter/type: 1.430" double
Retainer seal clearance: .730"


Rocker arm stud girdles:
Manufacturer: Dart
Part Number: 64110002
Rocker arm nut thread size: 3/8-24in.
Rocker arm nut style: Polylock
For Dart heads only.

Pushrod guide plates:

Manufacturer: Manley

Part Number: 42151

Guideplate Pushrod Size: 5/16 in.

Guideplate Style: Raised

Guideplate Material: Steel

Guideplate Finish: Black oxide


Rocker arms:
Manufacturer: Comp Cams

Model: Ultra Pro Magnum
Part number: 1602-16

Rocker Arm Mounting Style: Stud
Self-Aligning: No
Rocker Arm Ratio: 1.6
Rocker Arm Style: Full roller
Stud Size: 3/8 in.
Rocker Arm Material: Chromoly steel
Rocker Arm Body Style: Standard
Rocker Arm Nut Style: Polylock
Rocker Arm Finish: Black oxide

Head Bolts:

Manufacturer: ARP
Fastener Style: Bolt
Head Style: 12-point
Fastener Material: Chromoly
Fastener Finish: Black oxide
Washers Included: Yes



INCLUDED WITH THIS SALE ARE BRAND NEW REV RACING VALVES IN CASE YOU WANT TO RUN A CAM WITH 700" OF LIFT.....
$2000.00 obo
Contact me at: t4carbsandparts@gmail.com
(908)227-3308 text or call Derek