440 tow rig motor- what intake?
#1911780
09/13/15 07:00 PM
09/13/15 07:00 PM
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Joined: Mar 2010
Posts: 1,061 Atlanta, GA
mgoblue9798
OP
super stock
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OP
super stock
Joined: Mar 2010
Posts: 1,061
Atlanta, GA
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I am building a 440 for my 74 club cab long bed that will be used occasionally to tow a trailer with a car or tractor.
78 motor, 452 stock heads, cast crank, rebuilt oem rods w/ arp bolts, stock 71 pistons, hooker comp headers w/ dual exh and flowmasters, compression around 9 to 1. Hughes cam: Hughes HEH1928BL Camshaft Intake Valve Lift 1.5 .489 Exhaust Valve Lift 1.5 .524"
Intake Duration at .050" 219° Exhaust Duration at .050" 228°
Lobe Separation Angle 111º
Intake Opening at .050" 1.5° BTC Exhaust Opening at .050" 48° BBC
Intake Closing at .050" 37.5° ABC Exhaust Closing at .050" 0° ATC
I will be using a 4.10 gear with 30" tall tire, and upgrading to 518od at some point. Plan on using an 850 Thermoquad. What intake should I get? Read that Performer is basically an aluminum copy of the oem cast iron piece. Is the Performer RPM a better choice? Any other suggestions?
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Re: 440 tow rig motor- what intake?
[Re: elmor353]
#1911940
09/13/15 11:15 PM
09/13/15 11:15 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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any used dual plane 440 intake that you can get for a good price would be a good plan. Holley street dominator intake would be good cuz it'd have the spreadbore flange for a direct TQ bolt on but the adapter does work, just adds a bit of height
live every 24 hour block of time like it's your last day on earth
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Re: 440 tow rig motor- what intake?
[Re: mgoblue9798]
#1912197
09/14/15 01:16 PM
09/14/15 01:16 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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the street dominator works surprisingly well down low for a single plane & they are pretty cheap & you'd get the spreadbore flange. Other than the SD the cheapest dual plane you run into will work pretty good
live every 24 hour block of time like it's your last day on earth
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Re: 440 tow rig motor- what intake?
[Re: mgoblue9798]
#1912260
09/14/15 03:05 PM
09/14/15 03:05 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Get the intake lobe of the cam you are looking at on both lobes, the extra exhaust duration is contaminating the incoming charge as well as opening while there is still some cylinder pressure burn down pushing on the crank.
As for the intake manifold I agree with the stock spreadbore intake, they are a lot better than generic motors or ferds intakes were in both performance and fuel distribution and depending on the size of the tractor you are pulling the extra weight can be a good thing on the front of the truck. Just spend an hour or so smoothing/rounding the carb to port transition and smooth out any bumps/protrusions/casting flaws, block the crossover with epoxy and be done with it.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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