How much horsepower should a DIY electric go kart have? ... What Primary Pipes Do. vortec heads are nice. ... How much hp does a 5.7 350 have? How much horsepower do headers add? ... On stock motors headers do nothing for HP and may hurt HP ... Headers, how much gain Will I Gain More Horsepower With An Exhaust System? ... Are Headers Worth? ... the output jumped to 350 horsepower and 390 foot-pounds of torque. ... and add a few hp. It should be the ideal engine for a 1 ton flatbed. How Much Horsepower Do Headers Add? How much HP? How much horse power do u get adding headers on a chevy 350? Ya I'd junk the 305 and get a 350 and do a stock rebuild. How much horsepower will headers and a cold air intake ... probably about 30 hp i would know bcuz i ... How much horsepower do cold air intakes add? ... at the flywheel you have 350 flywheel hp... do How much horsepower will headers add to a 1969 350 oldsmobile with flomaster exhaust? Exhaust Manifolds vs. Intake Manifolds: How Do These Upgrades Improve Your Vehicle's Performance? i was just curiouse of just how much hp a new cam can add, i have a 350 rebuilt crate that i am ripping apart and puttin new parts in because it had the stock 2 barrel manifolf and old heads, i was just wondering how many horses i could expect from a new cam that is Intake Duration 050 inch Lift: 214 Exhaust Duration 050 inch Lift: 224 Best way to get a 305 to 300-350 hp? ... better exhaust to go with the headers is another 10-20 HP. How Much Horsepower Does the Honda Vehicles. I have seen that long tube headers can add low end torque and HP. I was wondering how much hp can puch my engine out. ... brought to you by the experts at Chevy High Performance Magazine. How much horsepower does a cold air intake add? ... then header dyno tune? ... How much horsepower do turbochargers add to a car? 390 FE. What kind of performance gains can I expect from my headers? I have seen that long tube headers can add low end torque and HP. Header basics and tech are discussed in order to explain how headers work. If its a 62-64cc 350 head it may have 2.02"/1.60" valves Those bigger valves will hit the deck/side of cyl bore on a i was just curiouse of just how much hp a new cam can add, i have a 350 rebuilt crate that i am ripping apart and puttin new parts in because it had ... How much horsepower do aftermarket headers add? Horse Power gain from Stock Headers to Shorty Headers. ... it improves HP by helping the engine evacuate the exhaust fumes that it has ... How much horsepower do headers add? How much horsepower will headers and a cold air intake add ... probably about 30 hp i would know bcuz i own ... How much horsepower do cold air intakes add? Made 350.6 H.P. Update Cancel. Where most 350 heads are 64 to 78cc (72-76cc most common) Put a 76cc head on a 9:1 compression 305 that came with 58cc heads and you will drop compression down to about 7.6 to 7.7:1 Also watch out for the valve sizes. Learn more about: How much horsepower will a supercharger add to my engine? by Cherise Threewitt NEXT PAGE . Headers Do Add Power, ... ended up costing the engine as much as 70 hp.