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Run the dual plane with the comp 280 230 480 110 lobes if the heads are stock vortec head swap will help and mill cc heads to add some compression to 9/1 and a resin phenolic spacer to insulate the carburetor from engine heat. Try 3000+ stall converter 4:11 gears shift 6200 RPM run 22lbs rear tires run old worn out shocks on front or 90/10s and 60/40 rear shocks. Try adding ballast box or weight over back of car behind rear tires relocate battery to hatchback trunk area. Run electric cooling fans. It will run faster with the hood on.

The convertor should help alot also lower tire pressure 22lbs and try just the 1.6 rockers on the exhaust helps top end HP chevy have deficient flow on the exhaust side look at z6 vet cam for example 210intake duration 222 to 228 exhaust Crane always ground cams with more exhaust duration and old to new most chevys ran better with 1.6 and Newer with 1.8 ratio rockers on exhaust side.

You should try a set of drag radials

Yep real cool 😎

Nice work. Only way to know what works best is to try different things.

That's pretty cool 😎 budget build love it sounds great 👍 😊

It might also be nice to put lambda/afr gauge on it to fine tune the carb and timing.

Very nice!!

This is a fun channel to watch as you build on your Firebird, reminds me of when I was doing the same in my youth. I have a question for ya though, could you remind us what gearing you are running in the back? Thanks, and keep up the excellent videos. 👍

Well done. Thanks for the comparison. Such a fun channel without any fluff or BS. Thanks.

Great video, thanks for all your work to do this. What's the rest of the combo? What cam, compression ratio, engine, heads, transmission and rear gear? Thanks.

Nice

FYI, you can do install the cam before the crank/rods/pistons with block upside down. Just makes it a little easier. Good job on the budget peanut port 454!

Can we get some Nitrous on this thing?

You NEVERidle a brand new rebuild. EVER! It wipes out the cam lobes😮

Just imagine that 454 in the firebird

Are we gonna get any more firebird videos

Very well done. If that is a flat tappet cam, it needs to be broken in on start up. 20 minutes at 2000+ rpm. Also use some zinc break-in additive. You probably know that right?

Nice I just built one myself

I’m 2 minutes in…I’m pretty sure a 454 block has enough meat, to punch it .090 over. That should help the cylinders & give you a reason to buy some new forged pistons. Since you’re talking about go-fast stuff, try not to reassemble the camshaft. The reason is this….if you decide to go with a relatively inexpensive turbo build (maybe an “is an eBay turbo worth it” vid?), running a full roller cam and lifters, mated with some forged .090 over 7.5 to 1 pistons, to allow for higher boost. I gotta tell ya…a 477 Cu.In., some forged internals, turbo, roller cam & lifters and some increased fuel delivery system, I’d be SHOCKED if that motor didn’t make north of 900hp. And can be done relatively inexpensively.

thank you for making this video!

Spend time exacting your work consintrate Daniel son

That's what I got in my 84 Z28, 5spd, I've upset a few other cars with it. 😂

In a drag race if you've got enough power, using taller gears reduces or eliminates a shift or shifts that lose ET. That's why top fuel is the most extreme example of this effect

You're the only guy on CZcams that has managed to get me to watch content about a Chevrolet engine. Good job sir. Keep up the good work.

Throw some trick flow heads, dual plane and a converter.

Doesn't sound good

Not hating this. Just one question...Why wouldn't you just change the short block to a 350 383 or a 400? Wouldn't that be much cheaper than all these special parts?

Very good video man. I have seen people make this type of comparison yet the run was at a different location and a completely different time of the year. One person's lower gear run was in 30 degree weather and the high gears appeared to be in the summer. Your comparison appears to be a real apples to apples run with likely a similar DA and an identical slope being that you did the run at the exact same location. Had the 60ft time been equal, the 4.10s would have ran 15.30s. Thats a significant difference. Everyone thinks gears are going to be magical, thats just not true. Yes you are going to get into the rpm sooner on the launch but you are also going to upshift into 2nd "higher gear" sooner. So again it isn't magic. Thats a solid gain, again great job with the video.

Good video. Thanks for the comparison. Could be a little quicker if you didn't spin 60 foot with 4.10s. Great video though

nice video.. is time raise your compression ratio... thah all

Nothing will replace the joy in my heart of a 3rd gen slamming a 2nd gear scratch

Where are the firebird videos

I did not expect that much of an improvement

What about a custom racey camshaft and a proper exhaust system? Also the ignition, if it can be messed with.

Put a 2500-2800 converter in it with 3:73 or 3:90 gears help out a lot

Dude i have a electric water pump for sbc thats just sitting around. Id love to see it on the firebird and into the 13s. If you'd be interested send me an email address and we can work something out.

Dont use the peanut port heads, use the square ports. The cast peanut port heads crack.

On it's way to brand new used.😎👍

Good video man. I’ve done the same with a single plane before on a mild 350. Certainly didn’t do as good as a dual plane, but had good power, and was fun. I had a bigger stall though. Also be careful when putting on the balancer without a proper tool. I’ve personally pulled some threads out of the crank before….not fun.

I once bought a Boss Hogg stall converter for my Th400. They sent me one that was packaged with the right part number, but it’s splines were wrong. I then ordered a GM25 converter.

That’s a good looking and sounding T/A. The wheels are perfect for it.

Love it!

LoL'z

85 GT 😁 My favorite

IF we got you one of our "Street Bandit Series" converter will you show the difference between a heavy 12 inch converter Vs our Super light lock up GM 700R4 10 inch converter? It is 12 to 14 Lbs lighter. The Less rotational mass will pick you up quite a bit more MPH and lower your ET.

Your car is in the 13's. Just bring it to the track. These onboard computers are not 100%. I did this years ago and the difference was 2 tenths, and 3 mph faster than the computer said in the car. Plus you will leave harder at the track. Don't be surprised if your car goes 13.6 at the track

Get the heads milled to boost compression.

91-92 305 tpi have Speed Density sensor's instead of Mass Air Flow like 85-90 did. There is a difference. My 91 TPI 305 automatic Z28 convertible only got faster with a gear change. From 2.73 to 3.42's. Night and Day. Throttle body airfoil will actually make a difference. I could not believe it, but it is noticeable

I had 3 of these 305 tpi cars. My 88 Formula 305 5spd 3.45 borg warner 9 bolt stock rear. Car had 130k on it. Air filter was the only mod. It ran 14.3 @ 94 at a track on street tires launched around 2500 and hooked good. The 5.7 automatic 89 GTA i had also had a BW 9bolt with 3.27's. That car ran 14.7 @ 95. 4.10's is too much for this car. The stall converter will make more difference than the rear did. I owned these cars 30 years ago