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Old 03-26-2004, 04:08 PM
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400 small block

whats up guys tell me what you think about this engine setup and what kind of horsepower and torque figures i can get from it, its going to be mostly a stree driven vehicle, never long distance, strip every now and then so i guess you could call it a mild street strip car, first off got a 400 2 bolt main, arp main stud kit, block has been decked for a .040 quench height, carter 750 CFM carb, victor jr. intake, GM performance distributor, dart iron eagle heads stainless steel valves, 2.02 intake, 1.60 exhaust, 3 angle valve job, 72 cc combustion chamber, hypereutectic pistons with moly rings (piston and head combo makes 10:1 compression) ARP head bolts. Forged Connecting rods with ARP bolts, forged crank with oil holes chamfered and polished

Cam Specs Hyd flat tappet

Adevertised Duration: 292 degrees intake, 292 degrees exhaust
Cam lift: .320 intake, .320 exhaust
Valve lift: .480 intake, .480 exhaust
Lobe Center: 107 degrees intake, 111 degrees exhaust

Full roller rockers 1.6 ratio, comp cams hi rev lifters, comp pushrods, long tube headers, 3 inch exhaust with H-pipe 40 series flowmasters with turn downs at rear end, TH350 with 2,800 stall converter, 4.10 axle ratio, this is in a 79 Malibu thanks guys.

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Old 03-26-2004, 04:22 PM
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I never new they made a small block 400CI with 2 bolt mains.

But sounds like a strong street combination to me
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Old 03-26-2004, 05:09 PM
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Quote:
I never new they made a small block 400CI with 2 bolt mains.
I thought they all were...
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Old 03-26-2004, 05:10 PM
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It will go fast!!!!
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Old 03-26-2004, 05:11 PM
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Accually, I looked it up, and I guess it depends on the year... the 70-72's were mostly 4 bolt mains and the 73 - 80's were mostly 2 bolt mains.
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Old 03-26-2004, 06:09 PM
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Just making sure you had steam holes drilled in the heads.
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Old 03-26-2004, 08:16 PM
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yes i had the holes drilled when i had the 3 angle valve job done, good question though, that would have been shooting myself in the foot if i forgot that, also put a Modine 4 row aluminum radiator and electric fans in the eliminate any cooling issues


Can any of you guys tell me what kind of numbers to excpect from this mild mill?

Last edited by 79 Malibu327; 03-26-2004 at 08:24 PM.
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Old 03-26-2004, 10:39 PM
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I don't know how well that Carter carb will work with the Victor Jr. intake. If I was running a Victor Jr. I would want the tune ability of a Holley carb instead. I can see someone using a Carter for a mild engine build, but for a higher performance build, I wouldn't use one.
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Old 03-27-2004, 07:03 AM
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Thats not a bad combo, although I agree on the carb, Id personally go with eaither a 700 mech. sec. & an open spacer. or a 770 street avenger vac. secondary.
I come up with peak HP = 437 @ 6000 RPMs
peak TQ = 423 @ 5000 RPMs
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Old 03-27-2004, 07:19 AM
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418ft lbs at 4500
392hp at 5500

according to DD2K, those numbers are also at the crank.

I would also stick with the Q-jet, much more "easily" tuneable than the holley.
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