Shady Dell Speed Shop
770 Shady Dell Rd.
Port Matilda, PA 16870
(814) 692-4232

(Please leave voice mail if
no answer after 30 seconds)

Email us here:
dart69360@hotmail.com

 

EDELBROCK MAGNUM HEAD PORTING (click thumbnails for larger view)
Short Turn	Chamber & Intake Bowl
Exhaust Bowl	Ported VS: As Cast
Exhaust Short Turn	Intake Bowl
Ported VS: As Cast	Chamber
Chamber	Chamber
Chamber	Chamber
EDELBROCK MAGNUM AS CAST OUT OF BOX LIFT------IN/EX .100"----67.0/N/A .200"--128.3/105.2 .300"--184.5/139.0 .400"--224.6/163.8 .450"--239.4/171.8 .500"--249.4/176.6 .550"--259.4/179.4 .600"--264.9/182.8 .650"--267.3/183.2 .700"--267.3/183.8 STAGE 3 PORT WORK LIFT------IN/EX .100"----77.6/N/A .200"--144.9/112.2 .300"--204.3/151.8 .400"--255.3/189.8 .450"--276.0/199.1 .500"--286.0/201.9 .550"--292.2/206.3 .600"--297.4/208.4 .650"--297.4/209.8 .700"--297.4/211.1 All #'s at 28" of H20. Ported head was flowed with 2.02" valve with 30 degree back cut on intake valve, and no flow tube on exhaust.
For more information about Edelbrock cylinder head porting email RyanJ@shadydellspeedshop.com

EDELBROCK HEAD PORTING
(click thumbnails for larger view)

AS CAST OUT OF BOX

LIFT-----IN/EX
.100”----72.5/N/A
.200”--131.1/107.0
.300”--182.9/151.8
.400”--216.6/181.2
.450”--227.7/182.9
.500”--235.9/185.6
.550”--238.7/185.6
.600”--242.2/185.6
.650”--243.2/185.6
.700”--243.2/185.6

EDELBROCK STAGE 4 PORT WORK

LIFT------IN/EX
.100"----76.0/N/A
.200"--147.0/112.1
.300"--206.7/163.9
.400"--255.3/193.2
.450"--274.3/203.6
.500"--279.0/212.2
.550"--285.0/218.0
.600"--293.2/226.3
.650"--293.2/229.4
.700"--293.2/230.8

All #'s at 28" of H20.
Ported head was flowed with 2.05" FERREA valve with 30 degree back cut on intake valve, and no flow tube on exhaust.

For more information about Edelbrock cylinder head porting email RyanJ@shadydellspeedshop.com