Powerglide vs Th350 Chevy 350 Vortec heads

Рет қаралды 15,427

Nyle Green

8 ай бұрын

Surprising results. Track testing a 3 speed Th350 transmission vs a 2 speed Powerglide transmission.

Пікірлер: 81

@richcollins513 8 ай бұрын

For once a video that isnt about an LS engine swap. Thanks for holding the legacy of the SBC 350 5.7 L31

@nylegreen261 8 ай бұрын

Nice thank you.

@oldfart8501 8 ай бұрын

In the old days all we ran was powerglides

@mr67maro 8 ай бұрын

Looks and sounds great. 11.26 is moving, has to be a lot of fun!

@nylegreen261 8 ай бұрын

Thank you. Yes having a good time.

@deno2566 8 ай бұрын

Love the content, I’ve watched every video so far. Keep em coming.

@nylegreen261 8 ай бұрын

Nice, Thank you.

@lparsons6977 8 ай бұрын

I appreciate all the work that you put in these videos. Thank you.

@nylegreen261 8 ай бұрын

No problem. Im enjoying it.

@lancelanphier9509 8 ай бұрын

Sounds great, runs great. Nice budget combo!

@nylegreen261 8 ай бұрын

Thank you

@TargaWheels 8 ай бұрын

Before I sold my 67 Nova, it had a 406/M21 4.11's and 28/10-15 MT slicks. The best I got out of it was mid-12's. The best the new owner and his nephew got out of it was 12.40's. He tried different things as far as the engine went, but it either stayed the same, or slowed down. He switched to a manual valve body Powerglide with a 4000 rpm stall and got in the 11's. Even though that was a pretty decent improvement, I think the main problem was the engine. Stock 5.56 rods and a restrictive top half. It had 462 camelback 1.94's, Edelbrock Performer RPM, and a Holley 750 double pumper. Crower 00355 solid cam, Hypereutectic flat tops, MSD 6A, and a Mallory Unilite. Fenderwell headers just like yours. If I had went with longer rods and a better breathing top half, it would made a world of difference.

@nylegreen261 8 ай бұрын

Thank you for the input. Before I owned the car it was a 4 speed car with camel humps. It was a mid 12 second car. The 4 speed was alot of fun.

@stevenbean9706 8 ай бұрын

id never ever build another 5.56 or 5:7 rod 406 ever again ! I used 6 inch olds rods in my first 406 like 30 years ago after using the short rods like 5-6 years i had an s10 i opened the power pack heads drilled the steam holes 172 150 swirl polished the valves tiny valves on that 406 made a crazy 8th mile motor it went from running 7:80 to 6:70 with rod change i later got a set of pontiac heads for small block chevy they were good for another half second 6:2 the kick was 1/4 mile it went 9:90 which made little sense but i guess the 2:05 1:72 valves made that much difference !

@GJ-DT 3 ай бұрын

The rods wouldn't make any difference but a set of afrs would make all the difference in the world.

@jdm4569 8 ай бұрын

Nice job on the 11.26 you werent expecting that. Looking forward to see what the new motor does

@nylegreen261 8 ай бұрын

Yes thank you. Should be in a couple of weeks.

@IslandBoy958 8 ай бұрын

Beautiful Nova and a very very nicely set up drivetrain. Awesome

@nylegreen261 8 ай бұрын

Thank you

@RonaldLewis-py6yt 8 ай бұрын

Ole yeah love my Glide I built it few years back 180 straight cut low gear with all good parts, can't wait to see your 408 video!! Thanks for sharing and knocking it out of the Park 😊😊😊❤

@nylegreen261 8 ай бұрын

Thank you im thinking the 408 will like the glide.

@RonaldLewis-py6yt 8 ай бұрын

Yes 488 gears too!! I run 500 gear with my BBC 496 but I run 1/8 Tracks!! Happy Racing 🏁

@PatandDoopypoopy 4 ай бұрын

Man great mph. Sniffin 120. Such a beautiful crackle and cackle symphony of an exhaust tone. Gotta luv it. Very nice. Your doing us traditional sb chevy hotrodders proud.

@nylegreen261 4 ай бұрын

Thanks Pat.

@Mr62biscayne 5 ай бұрын

I just happened upon this video. I am in the middle of going the opposite direction, the reason being I wanted a better highway gear. Original combo was 1.76 Turbo spline Powerglide with 4400 stall converter and 4.56 rear gear. Footbraking my 68 Nova went 11.80's. Now it has a T350, same converter with 3.25 rear gear. This has roughly the same 1-2 as the Powerglide but with the addition of 3rd for highway rpm of 3000 instead of 4000. I have yet to get an actual time with this combo but from your video I can assume I will lose some. That's okay for me. Thanks for putting up this video.

@nylegreen261 5 ай бұрын

Nice that sounds interesting. Post up the results when you get them.

@dzperformance7360 17 күн бұрын

Great video ,love your Channel

@steelcitycaprice.899 8 ай бұрын

Second pass looked golden 🏁🏁🏁 plus that large cam sounds 🎶🎵🎶🎵

@nylegreen261 8 ай бұрын

Thank you.

@misterhipster9509 8 ай бұрын

Fair comparison requires same converter diameter, ideally same converter. I've been in the racing transmission business since the mid 80s. Personally made the change from a T-400 to a 1.76 glide in my big block Chevelle, a regular @ Byron. Car ran mid 10s, Glide picked it up a tenth, using the same 8" converter. Made the change quite a few times in customer rides, always about the same improvement. Your result was due to the converter difference, however it proved once again a glide will be a bit quicker in a average bracket car. More consistent too. You can find me @ Byron in my green and orange Chevelle w/2nd gear start T-400 pulling pretty stout wheels up launches.

@nylegreen261 8 ай бұрын

Agreed, I appreciate the input. I do need to get a decent converter for Th350. Im still using the 17 spline input shaft in the powerglide.

@joe-hp4nk 8 ай бұрын

The new engine has wicket throttle response, the tight lsa helps.

@nylegreen261 8 ай бұрын

Nice Thank you

@patrickmoore1017 5 ай бұрын

Smokey gold engines. Man I like it! Great channel, great car, and great engines!

@nylegreen261 5 ай бұрын

Nice thank you

@JoeHynes284 5 ай бұрын

it would be cool to do the math to see what the actual gear ratios are taking into account the multiplication factor from each respective TC

@dillinpicklesworth5698 8 ай бұрын

With those 4.56 gears the powerglide helped utilize the torque curve as i mentioned before 👍👍

@nylegreen261 8 ай бұрын

Nice the vortec heads seem to help make a nice torque curve.

@michaellecount8510 8 ай бұрын

Great video!

@nylegreen261 8 ай бұрын

Nice, thank you.

@V8N8T 8 ай бұрын

Bitchin Nova Nyle! The motor sounds great!

@nylegreen261 8 ай бұрын

Thank you. This one runs good.

@kristjanstefansson2765 8 ай бұрын

After seeing this I’m more and more sure that the 408 will put you in the 10’s

@nylegreen261 8 ай бұрын

Hopefully, I will get it to the track in the next couple of weeks

@justinmccann7337 7 ай бұрын

First vortec heads i have seen without the saw blade pattern on the front

@nylegreen261 7 ай бұрын

Yes when was looking to buy the best deals where on the 906 castings vortecs. Maybe for this reason.

@thembasivate 4 ай бұрын

sounds great

@nylegreen261 3 ай бұрын

Thank you

@jrsgarage3244 7 ай бұрын

Willy says Chevy's like more timing 36-38deg 👍🚩📈

@Hogiewan1 8 ай бұрын

Great video. I’m surprised by the powerglide. I wonder how much it is due to the converter

@nylegreen261 8 ай бұрын

Thank you. Im thinking quite a bit.

@infamousnova 8 ай бұрын

Solid 👏🏾💪🏾

@nylegreen261 8 ай бұрын

Thank you

@hankclingingsmith8707 7 ай бұрын

Nice job

@nylegreen261 7 ай бұрын

Thank you.

@andysteele4056 8 ай бұрын

I love this stuff! I couldn't really tell with the digital tach, what rpm do you shift this one at?

@nylegreen261 8 ай бұрын

Thank you 6800

@MrsSunshine75 7 ай бұрын

That 350 does sound good! I see the fender well headers, is there any thing hanging off of those, pipe, muffler etc.?

@nylegreen261 7 ай бұрын

It has 3inch warlock mufflers on it. I have them uncapped.

@leebrady6326 8 ай бұрын

Sounds great, gettin pretty close to 10 seconds..

@nylegreen261 8 ай бұрын

Yes I'm thinking i will need a new converter for the Th350 for that.

@jeremystory6981 8 ай бұрын

U did good 😮 couple cars,,,gold paint

@nylegreen261 8 ай бұрын

Nice thank you

@barrykilts4506 6 ай бұрын

With all that duration I’m just wondering why you don’t raise the comp.,it wouldn’t have problem bleeding pres.off

@nylegreen261 6 ай бұрын

I wanted to try a large duration cam with low compression. Plus I was using the parts I had on hand.

@lancelanphier9509 8 ай бұрын

Meant to ask you which vortec heads exactly are you talking about that you have?? And are they OEM stock heads without porting?

@nylegreen261 8 ай бұрын

Yes, 906 castings. They have the stock valve job. Single angle on the exhaust with the large exhaust seat insert.

@user-ts5jp4jj9m Ай бұрын

Powerglide with a lil nos that mf would looking at the shy off the line

@junk496 8 ай бұрын

Very nice. What's the rear gear ratio?

@nylegreen261 8 ай бұрын

4.56

@leonardfoster6252 7 ай бұрын

A 1.82 power glide will break pretty easy. It will last for awhile. Reason of why they break is that the planetary hears are small dia. 1.76 is harder to break because the planetary gears are much larger in dia. Car will probably faster with the 1.82. I ran faster with a power glide than my turbo 400 with a A-1 8" converter, 4,000 stall, not enough stall, changed it to 5,500 rpm and car picked up... Both on et. and mph...

@hankclingingsmith8707 7 ай бұрын

A 1 good converter

@nylegreen261 7 ай бұрын

Nice thanks for the input.

@rrbdragracing7501 8 ай бұрын

Good morning everybody, I just watch the video, Gentleman, do you take for the trip with the 406 already or not, actually sounds healthy the 406 too, take care everybody and good luck with it, 👋👋👋👍👍👍💪💪💪

@nylegreen261 8 ай бұрын

Yes made it out to great lakes dragway yesterday .The chevy 400 ran well.