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450 ci sb #770161 08/09/10 10:18 PM 08/09/10 10:18 PM
Joined: Aug 2006 Posts: 99 South Dakota W wireweld OP member
wireweld OP member W Joined: Aug 2006 Posts: 99 South Dakota	I have a set of eddy heads that were cnc ported by hughes engines. I am wondering if they would have enough flow for a 450 ci small block.

Re: 450 ci sb [Re: wireweld] #770162 08/09/10 10:24 PM 08/09/10 10:24 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	What (in/ex) flow #'s did they achieve? live every 24 hour block of time like it's your last day on earth

Re: 450 ci sb [Re: RapidRobert] #770163 08/09/10 10:39 PM 08/09/10 10:39 PM
Joined: Aug 2006 Posts: 99 South Dakota W wireweld OP member
wireweld OP member W Joined: Aug 2006 Posts: 99 South Dakota	lift ex in .600 179.9 293.8 .650 198.1 295.6 .700 200.1 297.7 .750 299.6

Re: 450 ci sb [Re: wireweld] #770164 08/09/10 11:24 PM 08/09/10 11:24 PM
Joined: Jan 2003 Posts: 31,050 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,050 Oregon	Sure, they'll have plenty of flow unless you're planning on spinning the motor very hard. We have a set of Hughes ported Edelbrock heads on a 427 inch small block and it works just great. Peak HP is at 5800 rpm which is perfect for a mean street car. You just have to put the right gear in the back end and then enjoy the torque curve.

Re: 450 ci sb [Re: AndyF] #770165 08/09/10 11:38 PM 08/09/10 11:38 PM
Joined: Aug 2006 Posts: 99 South Dakota W wireweld OP member
wireweld OP member W Joined: Aug 2006 Posts: 99 South Dakota	My next ? is I have a 416 in my car with these heads on and it dynoed at just under 600hp and 550 torque. Hp at 6100 and tq at 4600. Will I see much more by going to the 450 or am I at the top. I am running 10.6 cr and would like to stay using 92 octane pump gas.

Re: 450 ci sb [Re: wireweld] #770166 08/10/10 12:50 AM 08/10/10 12:50 AM
Joined: Mar 2005 Posts: 3,445 N.Wilkesboro,NC D DusterKrazy master
DusterKrazy master D Joined: Mar 2005 Posts: 3,445 N.Wilkesboro,NC	Not to high-jack here but is a 450 C.I small based on a chrysler production block or is that aftermarket??

Re: 450 ci sb [Re: DusterKrazy] #770167 08/10/10 01:28 AM 08/10/10 01:28 AM
Joined: Jan 2003 Posts: 2,111 Bowie, MD R Reggie top fuel
Reggie top fuel R Joined: Jan 2003 Posts: 2,111 Bowie, MD	Quote: Not to high-jack here but is a 450 C.I small based on a chrysler production block or is that aftermarket?? I think that its done with the MP R3 block.

Re: 450 ci sb [Re: wireweld] #770168 08/10/10 02:40 AM 08/10/10 02:40 AM
Joined: Jan 2003 Posts: 31,050 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,050 Oregon	If you use the same cam and heads then the HP number will stay basically the same when you increase displacement. The torque number will go up but it will come in at an earlier RPM. Net effect is the HP number stays about the same but occurs at a little less RPM.

Re: 450 ci sb [Re: wireweld] #770169 08/10/10 09:18 AM 08/10/10 09:18 AM
Joined: Jan 2003 Posts: 16,123 Grand Haven, MI patrick I Live Here
patrick I Live Here Joined: Jan 2003 Posts: 16,123 Grand Haven, MI	Quote: My next ? is I have a 416 in my car with these heads on and it dynoed at just under 600hp and 550 torque. Hp at 6100 and tq at 4600. Will I see much more by going to the 450 or am I at the top. I am running 10.6 cr and would like to stay using 92 octane pump gas. may not see much more HP, but you should see about 8-9% more torque. I'd guess on the same dyno it'll be ~620hp max and about 600 tq, with peaks about 3-400 RPM lower than you saw on the smaller motor. 1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod SOLD!* 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)

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