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Author
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Topic: Blown 351C 4V/Boss
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 11-25-2003 02:01 PM
 
I was wondering how well Cleveland 4V heads respond to being supercharged. I would think it would eliminate the problems with fuel drop out at low intake velocities. Couple that with EFI, and this should make a screaming engine, no?You don't seem to see many supercharged or turbocharged 351Cs. How does a 408ci Cleveland 4V, with a Vortech and Spyder EFI set up sound? ------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 11-25-2003 02:08 PM
I know for a fact that they respond GREAT to supercharging. Especially with a Roots blower. Those big ports and valves just love the extra forced air. 
Back in the later 70's and early 80's there was a team with a blown 351C TAD that dominated the class in NHRA. It kicked the Hemis asses regularly. Dennis somethingorother????????? I think his name was.
So much so that NHRA imposed a weight penalty on the 351C.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 11-25-2003 02:23 PM
No doubt, but I wonder if you could use a blower to really build bottom end torque. I'd want to use a centrifical blower to keep it all under the hood.------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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Mpcoluv
Gearhead Posts: 1421
From: Charlotte NC usa
Registered: Apr 2001
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posted 11-25-2003 03:08 PM
quote:
Originally posted by SteveLaRiviere:
No doubt, but I wonder if you could use a blower to really build bottom end torque. I'd want to use a centrifical blower to keep it all under the hood.
Centrifical blowers are much like turbos in that they build boost as the rpms go up.
I wonder if a Kenne Bell autoroter type blower can be made to work with a carb?
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Dubz
Gearhead Posts: 2005
From: Manitoba Canada
Registered: Oct 2002
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posted 11-25-2003 03:13 PM
quote:
Originally posted by Mpcoluv:
Centrifical blowers are much like turbos in that they build boost as the rpms go up.
I wonder if a Kenne Bell autoroter type blower can be made to work with a carb?
roots blowers do the same too
Hotrod did an issue not that long ago about putting a cent blower on a carbed car
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73STANG
Journeyman Posts: 83
From: Lincoln, NE
Registered: Apr 2000
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posted 11-25-2003 03:25 PM
Steve,The 6-71 on the Cleveland in my Mach I really woke up the low end. The power is instant.
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 11-25-2003 03:43 PM
How much boost are you running?------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 11-25-2003 03:51 PM
quote:
Originally posted by 73STANG:
Steve,The 6-71 on the Cleveland in my Mach I really woke up the low end. The power is instant.
Steve now thats a blower. 
Keep it under the hood  blowers are to be heard and SEEN. 
------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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73STANG
Journeyman Posts: 83
From: Lincoln, NE
Registered: Apr 2000
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posted 11-25-2003 05:46 PM
Steve,I'm running between 10-12 pounds of boost. I was always used to having low gears and high stall to get any bottom end out of the 4V Clevelands. I now have 3.50 gears and 2,500 stall and it destroys the BFG drag radials off idle. Patrick
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 11-25-2003 05:56 PM
That's a lot of boost. No problem with head gaskets? What is your compression ratio?------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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73STANG
Journeyman Posts: 83
From: Lincoln, NE
Registered: Apr 2000
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posted 11-26-2003 09:55 AM
I'm running a little under 8 to 1 compression. I haven't had a problem with head gaskets yet.
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jsracingbbf
unregistered
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posted 11-26-2003 10:35 AM
Steve, 351C's respond very well the blowers. Check out this link, they actually make a good bit of stuff for them. http://www.kenlowe.com.au/KLRC_Ford351.htm JS
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 11-26-2003 10:42 AM
Thanks Jerry, cool page! ------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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