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#1
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I'm curious about the potential (in HP and TQ) of a 1970 455 with 64 heads. Street manners are secondary, but of some importance.
Parameters: HEADS -Aftermarket heads are totally out of the question. -Also assume the stock 64s could be worked as much as possible/needed. -In addition, assume the use of any internal component readily available. This includes rollers, coatings, special cranks, rods, pistons, rings, etc. BLOCK -Assume filling if need be. However, it must be street drivable with a factory radiator. Good manners is a must. -I don't mind sleeves -Valley braces are OK -In addition, assume the use of any internal component readily available. This includes rollers, coatings, special cranks, rods, pistons, rings, etc. CAM -Rollers are fine -Lifters are open to anything -Can't sound like it's 8 strokin' (must sound close to stock) -Will be using P/B, however a can is possible. -Don't worry about vacuum too much INDUCTION -Factory iron spreadbore manifolding. -Well prepped Q-Jet -Factory 3/8" supply -In-tank electric pump. EXHAUST -RA long branch manifolds -Must run mufflers which sound close to stock Chassis setup: TRANSMISSION -TH400 CONVERTER -Whatever DIFFERENTIAL -12 Bolt Limited slip -Pretty much any available ratio (was thinking 3.73:1 or 3.55:1) SUSPENSION -STOCK -PolyGraphite bushings TIRES -You guessed it In addition, I'm not mentally locked into the 455, it merely suits the car I have. The other possibility is a 400, but I didn't wish to start out at a C.I. disadvantage. Any thoughts?
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____________________________________ "I work in high speed aluminum tubing." |
#2
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I'm curious about the potential (in HP and TQ) of a 1970 455 with 64 heads. Street manners are secondary, but of some importance.
Parameters: HEADS -Aftermarket heads are totally out of the question. -Also assume the stock 64s could be worked as much as possible/needed. -In addition, assume the use of any internal component readily available. This includes rollers, coatings, special cranks, rods, pistons, rings, etc. BLOCK -Assume filling if need be. However, it must be street drivable with a factory radiator. Good manners is a must. -I don't mind sleeves -Valley braces are OK -In addition, assume the use of any internal component readily available. This includes rollers, coatings, special cranks, rods, pistons, rings, etc. CAM -Rollers are fine -Lifters are open to anything -Can't sound like it's 8 strokin' (must sound close to stock) -Will be using P/B, however a can is possible. -Don't worry about vacuum too much INDUCTION -Factory iron spreadbore manifolding. -Well prepped Q-Jet -Factory 3/8" supply -In-tank electric pump. EXHAUST -RA long branch manifolds -Must run mufflers which sound close to stock Chassis setup: TRANSMISSION -TH400 CONVERTER -Whatever DIFFERENTIAL -12 Bolt Limited slip -Pretty much any available ratio (was thinking 3.73:1 or 3.55:1) SUSPENSION -STOCK -PolyGraphite bushings TIRES -You guessed it In addition, I'm not mentally locked into the 455, it merely suits the car I have. The other possibility is a 400, but I didn't wish to start out at a C.I. disadvantage. Any thoughts?
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____________________________________ "I work in high speed aluminum tubing." |
#3
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Hey Matt, gimme a call.
I REALLY like the combination in my Blue Formula, and it has LOADS of usable torque. Remember, I'm running OEM heads, intake and exhaust manifolds, a 3.08 gear and ONE muffler!
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Regards, "455HO" Lloyd 2008 GMC Sierra Denali 2WD Crew, L92 6L80E, Silver w/ Ebony guts, 14.26 @ 98 |
#4
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Funny you mention that.
my 67 has a 70 455 +0.030 over with Stock uncut #64 heads, 1.65HS roller rockers, CC Pushrods,Lunati double springs, CC292 cam, Torker I, 850Holley DP with 82/86 jets, TRW pistons with SD Rods, studs for the mains. 4 tube headers with 3" exhaust, 3:73 gears, TH400 w/3000 stall car runs N/A 12.5@106. With 150HP NOS runs 11.5@116. Car weights around 3600lbs with me in it. Good street manners, though with that cam it's got a prostreet sound to it. But the car is driven everywhere and has about 30 1/4 mile passes since I've owned it, and close to 80 1/4 mile passes on the shortblock from the previous owner when it was a dedicated drag car. The engine was built in 1991 and is still going strong.
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"Everyone is entitled to be stupid sometimes, but you're abusing that privilege" www.musclecarsgalore.com www.nikivee.com [www.reverbnation.com/nikivee 1967 Pontiac GTO 1967 Pontiac Grand Prix 1972 Pontiac Lemans Sport Convertible 2015 Dodge Challenger ScatPack 392, 6 speed 2017 Ford Explorer AWD |
#5
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How does 12.56@ 107.6 ,4290lb race weight with long branch manifolds. A Paul Spotts built 462, ported #64 heads, P-RPM, now T2, lunati s/roller, BG carb,etc...very sreetable! Look up 69f bird, there is a link on his profile to his web page. Shelly allowed me to drive it once last summer . Awesome!
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Systems under stress fail catastrophically |
#6
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Sounds like somebody is going FAST racing.
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Badder than old King Kong And meaner than a junkyard dog -Jim Croce |
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