New to Chevy world, and want to know what the best performance camshaft/Lifter kit is for a 1986 Camaro Sport 305 4bbl with 700r4. and needs to be street legal

 

There's a million cams to choose from. What are your goals?

 

have a 350+ hp car that is street legal and dependable enough and be a daily driver, and want a 60s muscle car sound to it, exhaust has alredy been done with 3" flomaster catback

 

You're not going to get your 305 to make your desired 350+ HP without either Nitrous or boost, whether supercharging or turbocharging. The cheapest way to get there is a Vortec-headed 350.
For now, a cam only, on an otherwist stock car like yours, might get you 20 horses, at best. If you're going to do that, you may as well do an intake manifold at the same time. The thing about doing a cam is you'll need to buy a different one for your vortec-headed 350. Better to put the money into headers and exhaust.
There are thousands of cams, but for your car as described, I'd suggest www.summitracing.com search CCA-12-388-4.

 

You want fries with that too? haha, sorry, but as Atilla mentioned, that's a heck of a lofty goal!
Do a cam and heads, and hope for 300HP.

 

If you don't need emissions-legal, I know how to get 370 crank HP from a stock LG4 short-block.

 

it ain't that hard to get 350 horses out of a 305. and if u guys think its hard then u guys don't know how to build motors. i have nothing internally done i have just bolt ons on my 305 and i'm pushing 340 hp no cam no nos no turbo no supercharger. just msd dist, coil, 8mm wires headers. my stock 305 came with 295 hp

 

Which stock 305 came rated at 295 HP, I never heard of any?
First gen Camaro 302's Conservatively rated at 290 hp, actual output was around 375 hp.
Im not making fun but the 3rd gen Firehawks made 350 HP with some majors engine/ intake tuning mods, so for you to pull 340 HP with only bolt-ons, thats impressive.
You have a dyno to show?

 

92 tpi police interceptor rated at 290 or 295hp don't remember but found that info on this site.
but i do apologize. my motor is bored 40 over i bought it like that and i forgot. but it is possible. i will run my car on the dyno again and get proof and put it on here it might take a week though.

 

If you found it., it's a typo. The LB9s did not exceed 230 HP. As for emissions legal, you don't even have smog testing in Tooele. Yet.

 

right but my car was a colorado cop car. and i also read on this site that police intercepters smog pumps were gutted out. don't know if thats true. i do live in tooele and yeah i got rid of my cats but my smog pump is still on there. don't know if its gutted out or not it's hasn't slowed me down.

i'm not on this post to talk about my car i have enough of those. i'm on here to tell this guy that if he wants 350hp on his 305 its possible all u 305 haters just don't know, not everyone has a 350 just laying around so people will just fix up there 305 with the money that they got and with his carbed 305 he shouldn't have a hard time doing it my tpi unit is actually holding my 305 back. but sense my car is a b4c i'm tring to keep it as stock as i can to hold value.

 

the smog pump doesn't eat 60 horses.

 

first off were does tooele not having emissions have to do with it. even though tooele does not do emissions the car still came with emissions. yes i have cut the cats out why because i can because i live in tooele. and yeah ur right a smog pump doesn't take away sixty hp police interceptor yes lb9 block, with 21lbs injecters, 10111773 cam shaft, and 1.6 rockers. way differant from reguler lb9. so if the stock lb9 has 230 hp u throw in the police interceptor package(21lbs injecters, 10111773 cam shaft, and 1.6 rockers) i bet it still doesn't have 230 hp. the reguler lb9 has what some call the peanut cam 19lbs injectors and 1.5 rockers @230hp. so i might be wrong and yeah all my info was found on the net. so i might not have proof form the dealer. in 1992 but i know because i have looked up all the numbers my cam rockers and injecters are bigger then a non b4c police intercepter. not only a lb9 but check out the g92 package.

 

Atilla

man i'm not fighting with u ya u are probably right but i did forget that my car is bored 040 over. but i'm driving proof that u can build a good 305 yes u can build a 350 alot more and alot cheaper. but as i also read i could be wrong but a tpi is holding back a 350 so i might as well have fun with my 305 unitl i can afford a diff intake set up. but this guy don't have a tpi so not a prob for him. i just hate reading all these post about guys wanting to do something with there 305 and the only answer everyone gives him is put a 350 in it. not everyone can get a 350 so help him on his ?.

we pretty much just took over this guys thread. i'm sorry that we did that me and atilla don't hate each other just. we are just bumping heads.

atilla my brother works at logan harley davidson so yeah i'm up there alot when my camaro is done (blew up the tranny again) i get ahold of u and we will go cruise and if ur ever down this way let me know.

 

I wasn't bearing any grudge, and I too apologize for hijacking the thread, if anyone feels we did. I think it's good to examine both sides of the issue. As far as I'm concerned, there's no bolt-on way to get a 305 to make 350 horses while still being absolutely legal to the letter of the law, unless using a supercharger.
I've built and driven some truly strong 305s, but once you go 350, you never go back without begrudging it.
alek72us, I'll PM ya.

 

I'm also fairly new to the chevy scene, I have '92 Z28, 5.7L I wanna play with the engine a little, just wanted some info on which cams are good and whatnot. Goal is not anything crazy, just good sound and some extra HP. Also if anyone has recommendations for headers that'd be greatly appreciated. Thanks. -Joseph

 

Cam selection for 3rd gens is first of all largely dictated by whether or not you plan to keep the car smog-legal and/or retain the stock intake.

Past that, some other factors are transmission type, rear-end gearing, and primary intended use of the car. Budget considerations as well as who is going to do the work come next.

 

Everything is stock except for some suspension work. The goal is to keep it somewhat street legal lol you all are the experts I'm just trying to learn what it is I need to do or suggested to do

 

The usuall..head cam headers 350 is easy. No those pumps werent gutted out

 

Does anyone have cam flow charts, I am struggling to find a cam to make 300 hp to the wheels on my 305. They work different than a 350 tho the cams are inter changeable!
So far The secret success I found for a 305 tbi is a Edlebrock performer intake manifold (None TPI) 416 cast heads with bigger valves and porting.. then a cam, I would really love to see the results of all these cams in a stock 305... All I ever find is 350 350 350.... They are starting to become more scarce and you can pick up a 305 for next to nothing!
I remember there used to be dyno software where you punch in all the measurements for the combustion chamber and cam grind and you would get an estimate!

 

So can anyone give me suggestions? For now itll be somewhat street legal until I decide if I wanna do more with it or not, looking into headers and cam at the moment, if theres anything you guys suggest to be done with this please let me know, I'm new to this and tryna learn

 

Personally I find headers only work on the bigger applications for big gains like 400+ hp. Headers will do very little if the engine restricted air flow air at the Intake throttle, manifold or heads. After airflow would be spark, Distributors are easy and come stock, And if you have tpi or tbi adjust the fuel for the airflow and advance or retard spark as needed. That's the safest way I know... Never appealed spending $700-$1200 for exhaust that only makes it louder and gains a measly 6 hp or so! Best bet for finding a cam is talk with a dealer IE Comp/Crane and find that grind or close too for cheap. And a machine shop can help with heads... I do not like the Vortec/Swirl ports personally, Also Mom and Pop machine shops may have a lot of extra **** laying around they may feel nothing about getting rid off... I only got lucky once! Intake manifolds are everywhere! Buy new and shiny or old functional cheap but needs cleaning!
Wish I had more advice but I don't own any machine tools!

 

Thanks man appreciate it

 

305 and 350 "work the same". Only difference is, a larger motor can tolerate a somewhat larger cam before it starts having the "too much cam" problems like no low end, excessive fuel consumption, etc.

Headers are THE SINGLE BIGGEST IMPROVEMENT you can make, to virtually ANY engine. In fact I would recommend getting a GOOD set of them - not just the cheeeeeepest thing you can find that somebody didn't go to jail for fraud by printing that word on the box - before changing the cam. I'd recommend checking out Dyno Don on this forum. They don't necessarily do very much BY THEMSELVES; that is, you probably won't feel a revolutionary difference if you do that one thing by itself; but what they DO do, is lay the foundation for EVERYTHING ELSE. Most (not all, but most) engine modifications to increase power output work by increasing the FLOW of air through the engine. Headers allow MUCH greater flow OUT OF the heads, after combustion is complete. You can't get more IN unless you can get it OUT after it's burned.

TPI uses the tuning effect of the runners to pack the cyl more full of air/fuel within a certain range of RPMs. That range is between about 2500 & 4000 RPM, with the peak at about 3600 RPM; it builds slowly as RPM increase toward 3600, then falls off FAST as RPMs exceed 4000 or so. It is VERY PICKY about valve timing, to produce this effect. It is NOT like a typical carb application where you just add more cam and the torque moves upward in RPMs.

The Comp "501" grind https://www.summitracing.com/parts/c...01-8/overview/ is a very good one for a stock 350 TPI with headers, when it needs to pass emissions, you don't have the ability to do tuning (VERY important), and you're stuck with the stock torque converter and 2.73 gears that come with the non-G92 L98. You MUST MUST MUST MUST MUST MUST change out the valve springs when installing it. All of the rest of that up there is not applicable to your situation.

 

Why does this old thread keep popping up?...

 

Hey, at least the new guys are using the "Search" feature; at least some of them, some of the time.

 

what is a cam flow chart? Just go to comp cams website and browse cams for oem hyd roller blocks 87-99. Or even lt1/lt4 gen 2 cams. As explained in your other thread 300 whp 305 is not easy and you will need alot of good port work and a 220’s deg cam imo

240’s cfm head flow in a 1.94 valve would be nice to see