how much hp and torque
#1
how much hp and torque
1968 455 f block punched .40 over making it a 462 i believe.The motor has 10.1 comp trw forged pistons,a comp cams extreme energy 284 duration advertised 286/296/at .50 inch lift 240/246 541/544 lift.Had a new std.crank and clevite bearings.Also had the big valve c heads rebuilt port and polished.The trans is a turbo 350 rebuilt with shift kit and a midwest 3000 to 3200 stall convertor.Thr rear end is a eaton posi 410 and the frame and control arms have been boxed so if any one knows a estimate of the hp and torque would help before she is all back together just in case i need to change something thanks.
#2
1968 455 f block punched .40 over making it a 462 i believe.The motor has 10.1 comp trw forged pistons,a comp cams extreme energy 284 duration advertised 286/296/at .50 inch lift 240/246 541/544 lift.Had a new std.crank and clevite bearings.Also had the big valve c heads rebuilt port and polished.The trans is a turbo 350 rebuilt with shift kit and a midwest 3000 to 3200 stall convertor.Thr rear end is a eaton posi 410 and the frame and control arms have been boxed so if any one knows a estimate of the hp and torque would help before she is all back together just in case i need to change something thanks.
#3
Depending on jetting, ignition curve, unknown porting, baseline 250 cfm heads, unknown exhaust system.....not yet moving, but flashing the converter...I'd say 4700 lbs/ft of torque, in 1st gear-at the tires.
Converter, trans, and axle eats 25% of what it makes, anyway.
Get some aftermarket axles for the 8.5 rear (it IS an 8.5, isn't it?) before you throw sticky tires on it.
ET is the ONLY # that matters, now.
HP is a # for the ego only. Don't worry about that.
JMO,
Jim
Converter, trans, and axle eats 25% of what it makes, anyway.
Get some aftermarket axles for the 8.5 rear (it IS an 8.5, isn't it?) before you throw sticky tires on it.
ET is the ONLY # that matters, now.
HP is a # for the ego only. Don't worry about that.
JMO,
Jim
Last edited by Warhead; May 23rd, 2009 at 12:54 PM.
#4
Maybe as much as 475-490 HP and above 500 lbs ft of torque with headers, depending on intake, carb, & ignition. You might wish for 1 sz smaller cam since this one will make peak power spinning a little higher than you could comfortably go with this crank. But with all that torque who cares. Should be sweet!
#5
Depending on jetting, ignition curve, unknown porting, baseline 250 cfm heads, unknown exhaust system.....not yet moving, but flashing the converter...I'd say 4700 lbs/ft of torque, in 1st gear-at the tires.
Converter, trans, and axle eats 25% of what it makes, anyway.
Get some aftermarket axles for the 8.5 rear (it IS an 8.5, isn't it?) before you throw sticky tires on it.
ET is the ONLY # that matters, now.
HP is a # for the ego only. Don't worry about that.
JMO,
Jim
Converter, trans, and axle eats 25% of what it makes, anyway.
Get some aftermarket axles for the 8.5 rear (it IS an 8.5, isn't it?) before you throw sticky tires on it.
ET is the ONLY # that matters, now.
HP is a # for the ego only. Don't worry about that.
JMO,
Jim
I agree, ET is the only real number.
#6
well i was planing on running a performer or cross wind intake i have a custom built holley 850 im running a full msd ignition with msd 6al box and blaster coil and running through a set of hooker headers with three inch pipes back to flowmaster 40s then three inch out the back car weighs about 3500 pounds
#9
My only advice to you is to watch that oil pressure. As I have been told, Olds likes to push all the oil up in the heads and starve the bottom end when you run a low gear like you are. Just watch that oil pressure. I have restrictors in my motor as well as a crank scraper and I run 75-90 on the gauge all the time. Other than that HANG ON SON!
#12
Wow...bunch of cam!!! Should run well into the 11's with the right tires!! When you run, get an exact weight on your car then use the formula with your known miles per hour at the end of the 1/4 mile to calculate Horsepower.
When ya want to really go fast I'll build you a Q-jet!!
Danny
When ya want to really go fast I'll build you a Q-jet!!
Danny
Thread
Thread Starter
Forum
Replies
Last Post
Oldsragger
Racing and High Performance
37
January 29th, 2015 03:51 PM
molasses4masses
Chassis/Body/Frame
12
January 13th, 2014 10:04 AM
rtpassini
Drivetrain/Differentials
13
June 11th, 2010 12:36 AM
rhurstolds74
Parts For Sale
1
July 30th, 2009 06:43 AM