My first car was a 1953 Chevy Bel Air convertible with the "Blue Flame 6"......

Anybody remember the Pontiac straight 8?

 

I6 engines can have a longer stroke, because there is no adjacent cylinder to interfere with the connecting rod. Therefore, they can be designed from the beginning to produce lots of torque. You can also design a I6 thats short stroke, over-square, with a peaky powerband.

 

i6's are great.

my 95 e150 van with the 4.9L has over260,000 miles and never been rebuilt or opened up. and it's lucky if it gets an oil change earlier that 15K miles.

indestructable.

 

Absolutely!

My first car was a '50 Pontiac I8. Cast iron block, head, pistons, transmission case, etc. Today it amazes me that it never blew as high as we turned it.

 

proof please.

 

Take a look at the two. I had the chance to look at the two side by side. I pulled the I6 out of my 68 Camaro, and a friend pulled his toyota I6 from his land cruiser at a buddy's shop. We were talking about how similar the two engines looked and such. Well our mechicanic friend of ours that was helping us both tells us about the only difference in the two are one is standard while the other is metric. As we torn the engines apart a little is was clear how the two were the same. If you don't believe me go and check it out.

 

The supra engines where billet IIRC. But the reason the Camaro was put out of business was the same reason the supra and the 300ZX TT was put out of business.. Low sales... Extreemely low sales...

I've ridden them.. and I think the LS1 has nothing to envy from them...

My father and I have raced many of them (him more than me with his z06). He has a bolt on z06 and he has beat supras in the 500rwhp+++++ Range... Launching and on the role till 170 EASY...

There was this one guy once that though he was going to eat my pops alive... He got beat 5 times, he stopped on the expressway to remove the air cleaner !!! jaja...

Anyways.. I6 are more "natural" I feel with them and they are more balanced than the V6. IS300 is a nice revving engine... So was the I6 back in 1984 from the nissan maxima and toyota Cressida...

 

Even though this died a week ago, I wanted to ask a questions related to this. I have 2 old straight 6 chevy motors in the barn at my friends house her crackhead tenants she evicted left. I've been really wanting to build these up as strong as possible and turbocharge the **** out of them for about 2 years now. Anybody know of this being done, if so.. any links? I can't budget it right now, but in a few months its something I might can look into.. These are both 50's/60's model motors. I don't know if there are any aftermarket cranks made, or how much power these motors can handle, weaknesses, etc. Considering they are free.. It'd be an interesting project.

 

Try this link to Clifford Performance. They do good things with six in a row.

http://cliffordperformanceshop.com/home.htm

 

I found an inline 6 book at the book store. I think the name was Chevrolet inline 6. I think it would help alot with a project like that.

Brad

 

Man, I'm pretty sure that you could say this about 95% of the straight-sixes out there. It's a simple design, and so there's only so many ways to pull it off.

 

Just thought I'd add that I think GM's new 4.2 I6 is an incredible engine. My daily driver is an 02 Trailblazer with that engine and the midrange and topend power this motor makes (for a 6 cyl) still amazes me sometimes. I'm really curious about any good mods for this engine, the only one I've done so far is to remove the restrictive airbox cover and run a K&N cone filter, it already has a cold air style intake tube, and adding that cone filter really helped this motor breathe much better. I can't believe that next to no one makes even a cat back system for the entire Envoy/TB/Bravada line of vehicles? The only one I found is by Borla, it looks very sweet but costs close to $1k !!! The stock exhaust on this truck looks pretty restrictive, I would really like to see how much a nice catback wakes the engine up even more. (Of course my wife thinks I'm crazy that I now want to mod the truck too )

I know it's been mentioned before but after putting 35K miles on this motor so far I think it would make an awesome base engine for the (hopefully) 5th gen Camaro. It gets a 4400 Lb truck moving pretty damn good, I would love to see what it would do in a 32-3300lb Fbody

 

the 2JZ-GTE is not fully forged. i know the pistons are cast.

quote]Originally posted by ATMINF
You guys do know that the toyota I6 is based off of the old chevy I6 from back in the 1960's right. The top end on the Supra is different, but as for a earlier post saying how alot of money was put into R&D for those motors are right, it was done by GM back in the day. The difference in the bottom end is that the toyota is metric and the GM is standard.
Another part that Toyota has basically looked at and redid for their smaller trucks is the Ford 9 inch rear end. Toyota has basically made a smaller version of it and put on their trucks for years.
I am not bashing the I6 in the Supra, they are great motors but their heritage comes from the General. Just a little neat info, so you can talk to the import crowd about the "mighty" Supra. [/quote]

i heard the the LL8 (trailblazer motor) was degined after the 2JZ-GTE.... which would be ironic if both statements are true.

i agree...

i've been debating trying to mate that to a T56, lowering the compression via a rebuild, and putting a nice big turbo on that.... then sticking the whole thing into an older 240z. i still have more research to do on that though.

anyone se the article where they twin turbo'ed a trailblazer. it made ~400hp on a pretty low boost setting.

 

In 2000, a 5 liter version of the Vortec 4200 I6 won Pikes Peak hillclimb and some other pro off-road races. That engine had 600 hp @ 7500 rpm. There's lots of potential there.

I don't think the Vortec 4200 was copied from any existing engine, except for maybe number of main bearings and camshafts. My only complaint is that it's not a pretty engine externally like a Northstar V8. It's also rather tall for a Camaro-type car. I lilke it for street rods.

The 3.5L 5 cyl version is due very soon in the new pickups. 215 hp and 225 lb-ft or thereabouts.

 

Wow, I hadn't heard that about the 5liter version, sweet. The looks of the engine are fine for a truck but I agree it's not the prettiest engine to put in a fbody, maybe if they did something different with that intake cover it may look a little better.


I read that article right after buying the truck in 01, it had me drooling just thinking about a TT setup on it. Was that Lingenfelter that put that together? I guess it must just be a one off project because I can't even find a header for this engine let alone a TT setup. A turbo 4.2 I6/t56 combo in an old Z sounds like an awesome idea, I'd love to see it if you ever make it happen.