More, "WHAT IF" 300! Making a seriously mixed up Buick 300.

I mix and match more parts to see if a custom camshaft is really needed to make the "What If" Buick 300 a reality over a pipe dream. Using all the best parts form the entire engine family, what could have been, will be!

[@rhare7353]

In 1964 I ordered a new 1965 Skylark with the 300-4 high compression engine 4 speed 370 posi rear 2 door hardtop and dual exhaust. It surprised a lot of GTO and MUSTANG owners and small block chevy guys with glasspacks it really sounded great, right now I'm working on a 67 Skylark convertible it has a 340-4 I did exchange the switch pitch for a 2004r turbo hydramatic. I do enjoy your posts.

[@mr.roddersneighborhood2740]

Well thanks! This week will be a new horizon for my channel. I’ve gathered all the parts to build the What If 300.

[@nicholasagnew2792]

The spirit of the hotrodder inhabits this man.

[@mr.roddersneighborhood2740]

Thanks!

[@TallGarage]

I love experimental stuff like this.

[@TwinTurboSkylark]

I look forward to seeing more of this 300 build!

[@bloodhawk6252]

Got 67 340 always wondered about this

[@tombrown879]

I also notest that the width of the cam lobes are a bit narrower on the 350. So glad you are doing this Dallas. It could open up all kinds of avenues. you could also machine some intake plates or TA i think has them, and fab up an intake, heck maybe even make it a side-by-side dual carb setup, one feeding each side. ;)

[@mr.roddersneighborhood2740]

I actually have a TA SP3 coming and I’m gonna cut it up and section it to make it work. The SP3 is not the deal choice but appears to be the easiest thing to do it with since it is an air gap design.

[@itseithergonnaworkoritaint7852]

@@mr.roddersneighborhood2740 This is very cool, I have been wanting to do this comparison for the longest time but life always seems to get in the way, thanks for sharing. Use a sbc RPM Airgap style intake and make adapters for it to fit or just cut off the Chevy flange and weld a Buick one on. You may have to slightly angle the ports so they line up but not a big deal. Plus the import sbc Airgap style intakes are a lot easier on your wallet vs the TA SP3.😲

[@deanstevenson6527]

You are my new Spotify background air play, Mr R. 4.24 inch bore center engines are incredible. Traco and Rover used the early head arrangement, the later 350 was as far as GM was concerned, a blank alley development, but should have been the go to engine. You are Recreating small bore center history. It was the transfer line that the V6 Buick on sold to Jeep, and GM gave the engine to Rover. The V8 transfer centers were kept from 1961 to the end of the GM3800 in the two thousands.

[@67L-88]

I think you might be off slightly, the V6 line was sold to AMC in the late 1960s. Then they bought it back in the late 1970s. GM sold the 215 V-8 line in the late 1960s to Rover. Rover kept that engine going until quite recently and it went into all sorts of British cars and trucks.

[@deanstevenson6527]

@@67L-88 👍🍕😎

[@ericcumming8518]

Thanks!

[@mr.roddersneighborhood2740]

Thanks for the Super! This will be finished up sometime in 2023. The intake manifold is being modified at the moment and the camshaft is being made. Should be a fun little experiment!

[@kevin2960]

I bet Powell machine would grind the cam down so you could try it. He is a gentleman and the LS cam i have from them is amazing.

[@mr.roddersneighborhood2740]

I actually already have a custom ground cam from Comp to try this out. I need to cut the intake manifold up and weld it back together.

[@kevin2960]

@@mr.roddersneighborhood2740 sounds good. Always wondered about the aftermarket Rover heads but they look small.

[@TwinTurboSkylark]

Good work

[@mrgransport]

Although lifter spacing is close the exhaust and intake on the center 4 cylinders are swapped on the 350 compared to a 300. Will require a cam ground with the 300 lobe separation.

[@twoeightythreez]

No, if he is using a 350 head, and he grinds the journals down on a 350 cam so it fits into the 300 block, and uses a 350 intake cut down to fit, he basically just made a 300 with high rpm power potential, and hybrid 300/350 packaging. The head and cam won't know that there are 50 less cubes, the firing order is still 1-8-4-3-6-5-7-2 on both, correct? I wonder how the 3.750 bore would affect shrouding I am assuming this is why this experiment is being done? Because the Buick 350 is so wide and is hard to fit in smaller platforms? Im considering a 300 for my 75 Datsun B210 (which is only 24-1/4 between the frame rails and the strut towers are only about 26-1/2 apart. A 350 Buick (which i also have) simply wont fit. So i was thinking of doing the 3.830" flattop 350 pistons in a 300 but would keep the 300 heads because that will give me about 1/4" clearance from brake booster....as long as the 300 can support an 80 thou overbore. It would certainly be different from the standard 5.3 swap 😂 I like that the 300 still weighs less than 500lb. Probably will use that Summit chevy-to-toyota W57 adapter bellhousing (they dont say but it looks like its dual pattern) because then my trans tunnel wont have to be completely butchered. The car is tiny enough, want to preserve what little interior spaxe there is. Kinda neat thinking about a solid, rev happy 300hp or so (and TORQUE TO MATCH) in a 2200lb car! Ok, maybe 2400 by the time a 8.8 goes in back but still it will be my pint size muscle car :)

[@JosephCowen-fz8vj]

Someone should weld up a year 2005 Buick V6 and add 2 cylinders same with the heads and make a modern day Buick LS . As this Buick Small Block is were the 3800 and 4100 V6 injected Buicks came from.

[@mr.roddersneighborhood2740]

The LS engine is a v8 variant of the Stage 2 v6 Buick. Technically the 300 Buick is a v8 version of the 225 v6, which is what because the 3.8 and 4.1 liter v6. The entire small block Buick and v6 Buick engine family is 100% a derivative of the 215 All Aluminum Buick V8. Even the 400-455 takes its linage from the 215.

[@JosephCowen-fz8vj]

@@mr.roddersneighborhood2740 that's my point , except the 2005 Buick V6 as a V8 cut up would be different ! I think you might want to look up some pics of the 1988 to 1998 Holden 5.0 and 5.8 injected engines , if you want to see were the LS came from , the Holden came out as a 5.0 litre injected version of the older 308 ci V8 and 253ci V8 only made in Australia. Once you see a pic of this engine you will know what I'm talking about , the Holden 5.0 EFI has the exact same intake as LS1 but in alloy, same port layout and location as LS1, same engine mounts, same type roller cam/lifters , same bellhousing , same Delco engine management, but the Holden was designed in late 1980s 10 years B4 LS1 came out .

[@HSTvids357]

You're doing an excellent job of making me want to build a SBB to go with my BBB. Unrelated, but I went and checked out the SEGA's stop here in Indiana, and what a great time. Such a neat organization, you don't see history in motion like that every day. My immediate thought being "how can I make a Buick fit in SS", gotta beat my great uncle running a Chevy. My thought was a 67 gs400. The correct number of Buick's is an infinite number of Buicks, right?

[@mr.roddersneighborhood2740]

My sentiments exactly! I have been working on this 63 Special to get it into the class for a couple of years, with little spare time and money. I always wanted to do a 65 Special with a 400 Big Block Buick and Big Port heads with the gambit of Stage 1 and 2 parts that would have been available at the time. That would be a contender for sure! As for the 67 model car, they seem to be few and far between.

[@MoparMan-ff8fb]

El Presidente - I've been sick with the Coof . I heard you where sick or currently sick ? Get well soon. cool video / modification

[@randallblack9519]

We put a 350 crank in a 300 block. Had to grind to clear counter weights and I think we had to have cam ground to swap 4 and 7 to clear the throws and rods.

[@mr.roddersneighborhood2740]

Randall the timing chain is the same, meaning the camshaft orientation is the same. The shorter rod required for this kind of build would definitely create a weird rod angularity inside this engine, but the counterweights would have to clear easily as they do in the 350. The rods are likely a different story.

[@itseithergonnaworkoritaint7852]

@@mr.roddersneighborhood2740 Yes, a shorter rod will give you more cam clearance, the reason why the General made the sbc 400 rods .135" shorter than all the other sbc that came with 5.7" rods from the factory.

[@bossbuick8615]

it should rev well

[@josheldridge3393]

Will the 350 buick heads fit on rover motor?

[@mr.roddersneighborhood2740]

I’m sure they will, the problem would be the valves are too big, the chamber is way too big for any kind of compression, the camshaft would have to have a custom valve profile arrangement due to the different valve arrangement and you would have to make a custom intake manifold. Other than that, they should fit. A later 4.6 Rover block would be ideal.

[@goratgo1970]

So no "history" of this swap from shops or Buick archives? Assemble one less intake, and hand turn away, inspecting clearances! You likely already did and I gotta wait for next posting... So Summit shows no stock on ATP timing covers, I have goose egg on local yards having any stock so where do I go to buy best cover and deal? I'm in Washington State - Thanks Mr. Rodder!

[@mr.roddersneighborhood2740]

I’m actually considering just cleaning this block up and throwing it together. Old rings and bearings and trying a few things out with it, like some dyno pulls with various head combinations, including the 350 heads.

[@mr.roddersneighborhood2740]

As far as a timing cover goes, I’m assuming you mean 4 a small block… a v6 timing cover is the same except the timing tab bolts on to the cover and some have a 5/8” pickup suction side. See if you can find one on eBay or marketplace.

[@jarlnieminen4307]

Might be worth seeing if one from the rover/landrover fits.

[@goratgo1970]

@@jarlnieminen4307 Thx - here in the States, tough to find pre FI Rover with dist. setup

[@jarlnieminen4307]

@@goratgo1970 even the early landrover discovery and range rover? That's unfortunate.

[@motorol5610]

What about fitting a 340/350 crank into 300 block.

[@mr.roddersneighborhood2740]

It will work with turning mains down to the 300 size and installing it in the block.

[@itseithergonnaworkoritaint7852]

@@mr.roddersneighborhood2740 You can also have the crank turned down to 2.750" main journal size and have the block line bored to the correct housing bore size for International bearings from one of their old v8 gas engines I can't recall right now but if you're interested in this avenue let me know and I'll look them up for you. Doing it this way gives you more crankshaft overlap especially good if you want to stroke the crank to use nascar take out rods from eBay?

[@josheldridge3393]

Please take a look and let me know 13:40

[@mr.roddersneighborhood2740]

If you wanna know, go check for yourself.

[@FabRaceModRepeat]

Buickstien

[@goratgo1970]

Right, paint it green!

[@TallGarage]

Mr Rodders Monsters

[@unclesquirrel6951]

Personally I blame squirrels