performance upgrade ?


Asked by Mar 07, 2008 at 08:46 AM about the 1984 Chevrolet Monte Carlo

Question type: Car Customization

i have an 84 monte carlo with a 305 in it its got a cam forged pistons new rings intake 600 cfm carb performer series intake manifold headers msd ignition port and polished heads and 3 angle valve job what do you think the horsepower is on it now?

3 Answers


the only way to know for sure is to dyno it. Some times "some" perfomance parts really dont add to the Horsepower but instead it helps it. Although if I was to make a guess, I would say you are in the 255-275 horsepower range. If you add a "cold air" with a "K&N - like fliter"and put 2.5" dual exhaust with "good" mufflers, and a under-drive pulley set up, you can go over the 300 mark easy.


I had a 86, The 305 was hurting when I bought it, I put a 383 "stroker" in it (a 350--> bored and a "400" crank) Aluim heads, FluidAmpr balancer, underdrive pulley's, 750CFM q-jet plus a whole lot of other stuff, But I dyno'd in at 377 to the rear wheels. The onlt thing I had to do was get a truck tranny and a custom/balanced driveshaft. Lots of memories....... Have any pics??

1 of 1 people found this helpful.

not much ! the most you can get out of a 305 is about 300hp. it all about cubes. could have bought a 350 for much less.

1 of 1 people found this helpful.

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