Ok first this is a California Car so I have to get the car pass smog Oh what fun.

What Motor hop ups mods can I get a way with and still get the car pass smog.

Heads which ones I have the iron heads on my 1986 vett.
Cam ? Computer Chip?.

I just purchased this car and found out it only has 230 HP I thoght it had more Like to add some more.

I would like to see at least 300 HP out the motor.

HELP Please.

 

I think you can put anything on it as long as it has a CARB number...when you do your research as far as what you want, make sure everything has that number, and you should be all set....but I could be wrong; I live on the opposite side of the country! There are several people on this forum from CA with hopped up cars; I'm sure someone will chime in to help you! Good luck..

 

As long as its a smog certified part, you're fine. That just means you can't have too wild of a cam and all your exhaust needs to be CA Smog certified (which i think means having a CARB number).

Or! If you're feeling especially shady you can just pay a smog test guy to pass your car regardless of what's in it. I dont suggest trying that though

 

I have a smog guy but I dont want to go down that road been there back in the 80s and after a while he closed his shop doors but I sold the car before it needed anouther smog check.

Next what mods do you guys do to get 300 hp out of the motor.

 

AFR heads, cam, 1.6 roller rockers, FIC injectors, new intake (super ram, mini ram, etc.), NOS...the list goes on; it all depends on what you want to do with the car.

 

you don't need heads to reach 300 hp unless you are talking rear wheel horse power then get ready to spend what you payed for the car.

This question is asked all day every day ck these out.
http://forums.corvetteforum.com/c4-t...post1573135664
http://forums.corvetteforum.com/c4-t...sepower-6.html

These are just 2 of the most recent.. use the search and spend some time here before you start any mods. You will be better informed and possibly save money time and aggravation.

 

I also have an 86 and live in California. I have a Superram, it has a CARB #. I have 2 exhaust systems. One is stock that I have to put on every 2 years. The other has headers and catless duels. I also have a set of heads off a 90, 113s. This and 1.6 rollers, underdrive pulleys and an aluminum flywheel, my 4+3, 3.07 geared Corvette has run 13.38@ 107 on street tires. That should work out to about 300HP.

 

When you change your exhaust, Do you go all the way to the manifold??

So you take the Mani off and put on headers?

 

Yes, all the stock exhaust goes back on to pass smog

 

Put on a 100 shot of nitrous and call it a day.

 

So far from other threads It seems like changing out the exhaust and better intake manifold is the best bang for the buck.

Nitrous is nice but not the way I want to go with it.

 

cat back exhaust system are okay. they may be noisy, but they are great cameoflage for a lumpy cam (as in "no, the cams stock; its the exhaust that makes the engine sound radical"). They are often the first suggested power adder...and (relatively) easy to install.

any thing that can be seen...especially if it looks different than stock...should have a CARB number. Beware polished billet or anodized aluminum in any shade of pastel.

that leaves everything else that can't be seen; cam change; porting; stroker kit; more compression; head swap; roller rockers. Just don't go so radical that the engine can't even idle for the smog test.

real bummer areas are intake manifolds or heads or exhaust manifolds / headers that don't have the necessary EGR or air injection features.

failing the tail pipe portion of a smog test is way more likely to result from inadequately maintaining the stock smog equipment than from any aftermarket parts you would ever consider installing on your engine.

with whats available today 300 horse should be a no brainer; try to stick with one manufacturer if possible.

and California is an absolute bear on catalytic converters; hope yours is in good shape...don't even think about deleting it on a street car.

lastly there's the argument that it's not the horsepower at the engine, its the horsepower that get's to the ground that's important; which brings up optimizing your car's suspension for the type of driving you intend to do.

it's a lot to think about.

 

Keep in mind you have a torque car & it always will be a torque car given that it's an L98 & minirams are illegal. Before I did my current build I ran a 100 shot (EO compliant) & had a perpetual grin on my face. It was safe, cheap, and effective. There's nothing wrong with a smallish HP, largish torque car on the street, believe me. C5s, older Z06s, & Vipers were all prey up to 60 or 70mph

All this being said, your intake will govern your cam (among other things to a lesser degree) & there's no intake legal for our cars to make them spin the RPMs for HP; that's just the way it is if you want to stay legal. Your only choices would be large tubes or a SR. You've probably got iron heads, so that's a concern too, and then you'll need to address the cam. If you tighten up the top end, then your older rings will start leaking & you'll most probably want to rebuild because it'll start burning oil quicker than otherwise. One thing leads to another (and the cash register) if you do it right........G/L Bro

 

Thanks I ben thinking about going though the complete motor anyways just like to know before I order parts what not to do.

So far I been thinking about some trick flow or some type of heads like that and a roller computer cam mite get the intake tubes bored out thats about it I dont expect a rocket ship just a little more if I go though the motor.

Then again a tight new stock motor mite be better then again heads after buying good set of new valve guild get the valve seats done ect I mite be better to get new aluminim heads.

 

If I do buy new heads which Size heads do I get 60 CC 64 cc 72 what do you think.

Edelbrock PERFORMER RPM™ CYLINDER HEADS, Trick Flow Super 23 195 heads, ??????. which ones go with 6.1 rockers and stock cam ?.

 

PM me a phone number & we can talk......there's gonna be a lot of stuff to cover