Interesting setup for performance and torque...
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Posting Guru
Joined: Sep 2006
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From: Bristol TN.
Interesting setup for performance and torque...
I got the latest issue of Engine Masters (man I love that magazine) and it had a combination that really interested me. They had a ford stroker 327 shortblock that was originally made for forced induction ONLY having 8.5 compression, Victor junior heads (2.05in and 1.60exh valves), dual plane rpm air gap intake, 750 speed demon carb, XE266 [FONT='Calibri','sans-serif']Hydraulic[/FONT] roller cam, and 1 3/4 long tube headers....made 386 pounds of torque at 4400 rpm, peak hp was about the same at 6000 rpm.
What if you put the same combo on a 351 with 10 to1 compression? I would think at least 450 pounds of torque and enough cam that would still be able to rev to 5500 or so. What do you guys think?
cam specs are:
*Advertised duration: 266 intake/274 exhaust
* Duration at .050 in.: 216 intake/224 exhaust
* Gross valve lift: .544 in. intake/.555 in. exhaust
* Lobe separation: 112 degrees
* RPM range: 1,600-5,600<!-- google_ad_section_end -->
What if you put the same combo on a 351 with 10 to1 compression? I would think at least 450 pounds of torque and enough cam that would still be able to rev to 5500 or so. What do you guys think?
cam specs are:
*Advertised duration: 266 intake/274 exhaust
* Duration at .050 in.: 216 intake/224 exhaust
* Gross valve lift: .544 in. intake/.555 in. exhaust
* Lobe separation: 112 degrees
* RPM range: 1,600-5,600<!-- google_ad_section_end -->
Cargo Master
Joined: Dec 2004
Posts: 2,232
Likes: 3
From: NE Texas
In order to go further with this, let's get past the numbers for a second and talk about what you will be using it for?
Before we go there, I will comment on one concept that you may not yet have considered. When you increase the cubic inches with the same h/c/i, the torque and horsepower peaks will shfit to a lower RPM. Because of this, there will be better combinations for that particular CI application.
Before we go there, I will comment on one concept that you may not yet have considered. When you increase the cubic inches with the same h/c/i, the torque and horsepower peaks will shfit to a lower RPM. Because of this, there will be better combinations for that particular CI application.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
They had a ford stroker 327 shortblock that was originally made for forced induction ONLY having 8.5 compression, Victor junior heads (2.05in and 1.60exh valves), dual plane rpm air gap intake, 750 speed demon carb, XE266 [FONT='Calibri','sans-serif']Hydraulic[/font] roller cam, and 1 3/4 long tube headers
Put the same heads and cam on a 9:x 351 with a long runner EFI intake and 1.5" longtubes and you get well over 400ft lbs TQ at 2000rpm and 350hp at 5000rpm, now that's truck power!!
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