Here’s why you should remove the engine: weight reduction bro

he has about the same build i got. i got to wonder how much hp i gain for the car if i lose the weight on myself

Those are all basic delete mods on any 80s era cars gotta love how cars from the 80s where all around better cars after deleting half the stuff from the car

Not sure of the L98s had this, but the Coolant Bypass for the Throttle Body is another great mod to do. Brings down the incoming air temps and its very simple to do and requires minimal tools. Great Vid! -Luis

I'm just glad that there's somebody that is doing mods on cars that normal people can afford, sadly doing attainable stuff doesn't get you the ad revenue

The spare tire is a structural piece in the event of a rear end collision. It diverts the force coming into the rear down into the floor instead of into the rear mounted gas tank. Removing the rear tire puts you at a high risk of death by inferno.

Best thing I ever did to mine so far was a set of ARH longtubes. Catless 3 inch pipe back to an x-pipe then to my Magnaflow mufflers. It thanked me in the top end of the rpm range.

Don't touch the EGR! If its dirty, cleaning or replacing the EGR will make a world of difference. But if its working, there is No power gains from deleting it. It only recurculates exhaust gases during light throttle cruising, it's closed all other times.

This is funny I just bought a 85 a few days ago and looking for some cheap mods. Watching the video I keep going into the garage (Its hot in FL I dont feel like sitting in there watching this) and every mod I see in the video has already been done to my car except for the exhaust. Kinda like the guy I bought it from watched your video and did all the easy stuff. Great video

I'm looking at getting one, keeping the spare, but I'm gonna slap thinner headgaskets on it, 1.6 rockers, mild retune, probably gonna tune for 93 with 4 hole or even 12 hole injectors.

The "frisbee" only weighs 3-4 lbs and you forgot the coolant bypass for the throttle body, iit actually does give free hp with a much cooler intake charge.

you forgot throttle body bypass

I did a supercharger with custom pulley's, and full exhaust system and lowered the car. I now have 400 HP.

i owned a 91 and 92. on the 91 i changed out the very restrictive mufflers to muffler delete and while it was apart i drilled out the rear catalystic converter which was clogged from the foward pre cats dissentergrating and sending their guts down stream. that got me more boost and great sound on the cheap. i also installed the airfoil in the throttle body. fast and cheap mod that seemed to work a little.

I couldn't make it through the whole video without having to interject. EGR is important. When you are running hot and burning cheap gas the possibility of detonation occurs. Two things happen. The heavy near knock pinging is picked up by the knock sensors. The ECM then retards timing to kill the knock, but it gets some help from...... You guessed it. The EGR valve. The point of the valve is just that. It introduces an INERT gas (spent exhaust) which causes a very quick temperature quench of the combustion chamber. Result? Knock killed immediately, and ignition timing restored to pre detonation setting. I'm not farting in the wind here... Master AST over 25 yrs. I am aware of shop owners who deleted EGR only to be sued by a customer because their engine piled up. They were chasing a stuck EGR and plated it off... Runs great now!! Man it flies!! Correction.... Flew.

Firstly, the EGR delete won't make one single bit of difference to power output, it does not recirculate exhaust gasses at WOT, and there is no point in removing it unless it is faulty or stuck open, and absolutely ZERO power to be gained. Secondly, the air injection reaction system simply blows air into the exhaust headers when in open loop, almost only ever when cold. Removing it will have absolutely no impact on how well the engine breathes. It "may" give a couple horsepower at lower RPM due to reduced parasitic drag on the belt, but that is it. I think maybe it would be a really good idea to get your facts right before you start telling people how to modify their cars, someone might come along here and actually think you know what you're talking about.

Had all those mods and then some! Had a blast with my 87!

Stock Z51 mufflers are open at both exit pipes. Significent performance increase over regular mufflers. Head pipe (pre pup cats) is 2 1/2" as opposed to Ca. Purposed vehicles.

This video is hilarious man 🤣 random ass clips of you dropping a burger

I've heard the spare tire acts as a structural member in case the car is rear-ended, and needs to be replaced with something in order to keep the car safe, if removed for weight reduction.

EGR - Makes no difference. Its only active when cruising. Smog pump - makes no real difference. Might gain half an hp in friction reduction. The real benefit to it is having less random hoses and wires running around the engine bay, which makes working on the car a lot easier. Frisbee - Its a little less rotational mass. Might be worth it but gaining 10hp from it is a big stretch. More like 2hp. Still, it serves no real purpose so removing it isn't a bad idea. Air box delete - the stock air box has more than enough air flow. The small fins on it don't really obstruct anything at all. I read on a forum somewhere that a guy dynoed before and after and had zero gains cutting up the air box. The only way to benefit here would be an air ram intake. -Insulating the air intake system - I have never heard of this one before. I would be curious to know if there is any actual gains. I feel like most of the heat transferred would be through direct metal on metal contact with the lower intake portion of the engine itself, and that the surrounding air might actually work to cool the intake rather than heat it. Could be a pro or a con, would need testing to see. Muffler delete - This one will actually make some extra hp BUT your car will be too loud. You are better off deleting the cat and calling it a day. These vehicles were designed with performance in mind. If you want to make more power an air ram intake, long tube headers, cat delete, tune/chip, and maybe the frisbee mod would be the ways to go. General maintenance stuff like testing the functionality of the MAF/O2 sensor/TPS, making sure there are no vacuum leaks, making sure the radiator is clean and free of debris, and making sure the air filter is clean would also help in performance.

I blew the TPI 350 engine and swapped in an LS2, best mod ever!

I don't know why I watch these C4 videos. I sold my 86 vette a few years back and moved on to a 73 firebird.

6:50 Perfectly dressed to drive a corvette, love it. P.S. awesome video, thanks for the tips!

Sure wish i knew this stuff 35 years ago when i had my 90. Have a 16 zo6 today and have been researching mods from day 1 and hell ya she is fast!! Great vid thku

3:73 gears! Best money spent

Do you need a smaller belt when you remove the smog pump ?

That ending was great.

Is there a link for the pump replacement pulley for the belt?

Without any dyno or dragstrip time you join the countless hoard of Internet horsepower wizards. On the dyno a typical K&N air filter will show the same horsepower increase as simply replacing a dirty stock air filter with a clean stock replacement air filter. There are some neat tricks that you can do with a flipped C4 air cleaner assembly to make an effective ram air system (with the trade off that you can’t drive your C4 through deep water puddles in the rain). Hot Rod Magazine made the ultimate light weight C4 in their hack-a-vette go cart. Don’t stop with meager 30 lb weight drops - go for a 1,000 lbs or more.

Where did you buy the alternator bracket, one to avoid the valve cover bolts? The bracket I have is broken and I need to replace it.

Did you say 10 hp with a air filter lol he knows his stuff

Whoop whoop that’s the sound of the first police!

Sorry but removing a 10lb balancer will not add 10 horsepower. That's the most ridiculous myth surrounding these cars.

I like, nice 👍👍👍

Hahahaha, love the video!

The only one of these “mods“ I would personally recommend would be modifying the air box and installing a K&N filter. I’ve opened up the area behind the license recessed area for cold air on my 96 LT4. Disconnecting any part of the EGR is pointless, and I would also discourage modding the AIR system. You won’t gain any power, likely even loose power with EGR removal, (probably won’t notice much with AIR system removal), sometimes causing issues with the computer and sensors. And like it or not, these systems are there for a good reason. Plus there is the whole “illegal AF” part. The suggested mod that really annoys and is a real pet peeve of mine is doing a muffler delete. Don’t take this personally if you have already done this, but louder is NOT a performance sound. With the early C4 especially, an 8-10hp increase is quite optimistic. With only 240-245hp, the sound you will end up with is more old work truck than performance sports car. The significant choke points with the stock exhaust are up stream of the stock mufflers. The tiny exhaust tube size, the transitions from the exhaust manifolds, catalytic converter(S), to the mid-pipe resonators, which on some earlier years even drops to a single pipe. Of course the stock muffler is not great but cutting them off while leaving everything else up stream will net you little more than LOUD. My recommendation I realise can be expensive but it will pay dividends in spades ♠️. I’ve been working on/modding C4’s since around ‘94-‘95. A full exhaust system designed for the car is the mod I always first recommend to anyone who is new to the wonderful C4 Corvette. A good quality performance exhaust(cat back)system can be had for $700-$1000. I can not see spending at least $300 to have a muffler delete installed. The advantage of a free flowing system is obvious, but the other significant gain is a proper, tuned performance sound that the C4 needs and deserves, not the ratty truck sound of just hacking the mufflers off. I know some won’t agree, mostly with the cost. But taking the time to save up, you won’t regret it. Add to this over time with good quality shorty headers, hi-flow cats, then a proper computer tune, the gains without cracking the engine open are significant. A little patience while saving up will be well rewarded.

Whoot just picked up an 84 with 39k miles on it gonna start working on it in the spring time

Okay here’s some info about the smog pump delete... you need to have a car less or self sustaining cat to do this mod. All the smog pump does is pump O2 into the catalytic converter so it can correctly react with exhaust gasses. Without this pump it will only take a few days for your car to clog it’s converter and be underivable. I had to delete mine due to a check valve failure which melted all of the unfindable electronics and I did not yet have an exhausts and spent three months trying to find why my car wouldn’t accelerate, did all 3 cars and voila

Not only educational but also a good time!!! 😂

Not the new balance, high socks,and hoochie daddy shorts😂😂😂

Have a C4 1990 can't find a smog pump anywhere what pully set up did you use to replace it , your help would be greatly appreciated,and who is it made by.

You're mouvies arent fancy, but You are one of the best youtubers.

Removing the air system is all pretty much all aesthetics. On the LT1/4 cars the air injection system is a mess. I installed shorty headers in my 96 and the bolt gets practically welded into the exhaust manifolds. After destroying the tube trying to get it out, I decided to remove all the clutter. I'm not going to pretend to get any performance gains here. Just less crap in my engine bay obscuring my nice new shiny headers for a nice clean look. The LT1/4 cars also have a resonator that you can safely delete for an x-pipe. Keeping the stock mufflers gives the car a beefier sound, honestly how the car should have came as it's not very loud. You can still add aftermarket mufflers without making it anywhere near obnoxious and possibly illegal where you live, unlike a muffler delete. The air box system is actually designed very well on C4s. I wouldn't waste money on anything there. Cut out the box if you really want. As for anything else save the money for something that really matters.

Got that corvettes owner look on smash from the hat to the shoes 😭🤣

Hey what wheels are those & what size are the wheels/tires?

The smog thing is to preheat the catalytic converter, the main thing with it is it puts drag on the engine being turned by the belt so there isn't something else to spin, I also moved the air temp sensor up on the intake like the newer ones

If you get a 09 challenger diffuser kit for your 84/96 c4 corvette & Bonded to your spare tire you will have a understanding how wind well now keep your car less turbulent

Did you have to modify anything to be able to put those wheels on the red one?

😎💯👍🏾🔥....own a C4 1987 myself, did some these mods

The end had me cracking up

Oh wow, it's Mr Random. I haven't seen this channel since I had a Crown Vic. Now that I'm looking at an L98, here he is again. A man of good taste, I suppose.

Can’t wait till I buy mine

very cool

EGR will lower chamber temp 2 - 3 hundred degrees. Combustion effiency gained by delete. Timing curve needs modification when doing this mod. Need new prom.

before and after dyno runs would be great.

The frisbee mostly apply to later C4's. I didnt see them on 84-86 .. think it was even later

Unfortunately "IN CALIFORNIA" bro if you remove the smog pump, there goes your chances of passing smog and smog inspection. And messing with the exhaust system OTHER THAN MUFFLERS is a fail. Some smog stations can be VERY picky and strict to the letter of the law with intake systems. I've done all those DELETES for horsepower and lightning the weight. It works BUT the head aches of passing smog is NOT worth it sometimes. Still great info, I have a 91 Corvette with 17,000 original miles, not messing with anything unless I upgrade to a 2015 LS from a Cadillac Escalade. Good horse power and torque from the factory.

On the muffler delete can I gain more power on aftermarket cat back

I have a 94 LT1 I put a cold air intake on mine and it made a Hugh difference

5 second rule Dude!! snach that sammie up like nothin ever happened!

So if I do this mod what else I need to keep up with a srt8 or a ss Camero ?

The nut shot . I can't un see that.😂

Hey man. How did you get the red colored plenum? Looks cool. I want one.

What year is this?

What's the wheel and tire combo on that red Corvette?

Where’d you get the smog pump delete?

Dang never heard of most of these!

Seven mods? ......and now #10. A million times faster? Hyperbole? Thanks for the fun and ideas regardless of ur count.lol! Rich

Cool

Will these mods affect California smog check ?

The real upgrade that you missed was the easiest and most effective modification: Air Foil on the throttle body between the two Air inlets ! Honorable Mention should be the Performance Chip Upgrade on the ECU.

That Frisbee is 3.46 Lbs on my 1991 corvetteL98 I must have got the small one.

👍

I see what you did with the shoes socks and shorts...I'm a boomer

Godd👍👍👍😍👍

the K&N filter doesn’t filter anything but large particles, still I would use it on track days. OE filters are very good at filtering and get even better while used until they take too much dust.

Why does he say the only way to make it faster is through forced induction? So cam, heads, and intake wouldn’t do anything?

hey, you and me both, could lose 50lbs off our waistline if we are honest. That would make the car faster as well. So far that hasnt been enough of an incentive for me to do it yet lol.

Why isn’t there any for 84

I want to ls swap one 😆

Do you still have the white C4? The red one looks newer maybe

The Airbox "Mod" doesn't really do anything unless you are making over 650hp. All it does is allow more water and debris into the filter. I have seen a 383 making 450hp using the stock airbox and not losing any power over a completely open one.

I have a freind with a 600 ish hp corvette that his grandfather built and im thinking about getting a c4 and mod the crap out of it and one day super charge it or turbo charge it and turn it to a drift monster

I dont even own a corvette yet im watching this video and now I want one...

Full after market exaust stahe 3 chip thottle body upgrade port pollish heads cam 3 angle valve grind

The poor burger didn't hurt anyone!

At lease they put the smog pump in a place it's easily ripped off.

The cigar took me out

I removed the frisbee just so I had more room when working in the engine bay, and also to be able to see things around the engine easier.

The best mod is detailing your car, I see to many bad c4's with terrible paint

You must be the youngest guy at the meets 🤣😂

Go Vols 🍊

Keep the spare and delete your spare tire, you will feel so much better. No offense meant we all can stand to lose our spare tires.

The C4 deserves the C4 logo. Putting a newer car's logo just doesn't seem right. But that's just my opinion.

Lol. I just want my 92 to start

Disconnecting the EGR will cause engine knock. Then the knock sensors will cause the spark to retard.

These C4s will not pass a California Inspection if any of the "original factory smog/emissions hardware is missing. The best way to get 40 to 60 hp and more is with a chip. I was skeptic, but for the money and install, I knew there was a good difference in the sound, response, and power. I run Golden Turbo mufflers, original cats, but do clean them ever 4 or 5 years with Cat Clean. I'm 750 miles from 200,000, and I'm getting 26/27 mpg on road trips, around the burbs and city 18 - 20. I bought mine in 2000, and she's a driver..& a Buck-50 car. In NC I no longer have to get my '86 inspected for the tag, because she turned 35 years old (ANTIQUE) Man, can you dig that? Lol!!.

I wanted a corvette so bad intill I stood next to one I’m too tall waist was above the dam roof

J'ai adoré la fin. That was a nice video and in fact, 5hp + 10 hp + ... hp Combine these mods and we can get a good amount of power :)