How can you get better performance out of a naturally aspirated

>>16399767
More rev

>>16399767
it can be a lot of work.
You can:
port the head(s)
put in upgraded/more aggressive camshafts
upgrade the valvesprings
put in bigger valves
put in adjustable cam gears
swap out the pistons for forged units with a higher compression ratio
a thinner headgasket to help increase compression
forged connecting rods to eliminat a weak link
and even changing the crankshaft. Puttin in a crankshaft with a longer stroke will increase the displacement but reduce how high it can rev. Putting in a crankshaft with a shorter stroke will make it rev higher and rev quicker, but it will reduce the displacement, potentially lowering power output.

>>16399767
supercharging isn't that difficult. dudes have been bolting 2 lobe huffers to their hotrods since the 30's.

>>16399767
Supercharging is retard-level easy. literally a few hows at most in most cases.

>>16399795
This guy gets it.

>>16399795

Good answer anon

File: Mark_Cerny_022.jpg (3MB, 4344x2976px) Image search: [Google]

3MB, 4344x2976px

>>16399767
you can gain hp if you switch to ohc

literally that simple

ohc>pushrods
turbos>superchargers

facts senpai

File: 1481008467024.jpg (308KB, 1024x681px) Image search: [Google]

308KB, 1024x681px

>>16399767
Depends, are you OHV or OHC?

>OHV
>buy best aftermarket heads that are within your budget, preferably allow for dat weight saving
>best aftermarket intake, preferably alloy or polymer
>aggressive as fuck cam
>solid lifters
>quality high ratio rocker arms
>high flow fuelpump if necessary to meet flow requirements
>cold air intake, high flow/pod filter
>if carby, get good quadrajet or whatever fits your manifold
>if EFI, upgrade injectors and get an ecu tune, or a custom ecu if you're feeling brave and know a good dyno shop
>if mechanical, pray for death
>high compression pistons/shave block/head/thiner head gasket to raise dat comp ratio
>forged or machined steel crank
>forged con rods
>ladder reinforcement for the block
>high flow oil pump
>lightweight flywheel
>tuned matched length headers
>high flow or straight piped exhaust
>if OHC, optimize whatever you can with the rockers/lifters/rollers etc, as layouts vary

There, you spent 15 grand on an engine that could make the same power from 3 grand worth of turbocharging, but your engine is a work of art.

>>16399778
This basically.
To make more power you need to burn more fuel, which requires more air.
So you improve the efficiency of the air side and the exhaust side.
Then start looking at thermal efficiency improvements i.e. combustion chamber design, air fuel ratio and compression ratio.
Then look at reducing frictional losses. That'd be ring package and cylinder materials, windage and pumping losses in the crankcase, oil pump and water pump efficiencies.

>>16399795

This nigger gets it.

If its an old carbed motor there can be a ton of potential from a carb and manifold change. Also nitrous, but bottles are for babies.

>>16400061
>bottles are for babies
What did he mean by this?

File: NA TUNE.png (59KB, 648x526px) Image search: [Google]

59KB, 648x526px

Piece of cake, you simply buy the NA tune.

Increase the angle of the piston stroke (an increase of 10o will give ~+5hp)
Replace the fuelling diode on EFi
Increase the oil pressure.
Brass your valves.
Heat treat the block.
Fit ceramic cylinder liners.
Use an exhaust recirculation kit and serpentine headers.

>>16400075

Kek

Believe me OP, if you want performance then forced induction is the cheapest way to make power.

>Increase displacement
>More aggressive Camshafts
>Increase compression ratio
>Opening up intake restrictions (intake ports, throttlebody diameter, any airbox restrictions)
>Opening up exhaust restrictions (exhaust ports, good set of headers, a nice free flowing exhaust)
>Increasing the size of intake and exhaust valves if possible
>Aftermarket ECU for tuning A/F ratios and spark curves

You WILL make gains, but it won't be as much as you would have made if you spent the same amount of money on a turbo or supercharger kit.