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Old 02-01-2006, 03:50 PM
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Straight Eight.....again

I know I have started a thread simalar before,but do any of you mess with inline eights?If so anyone got any tips on general stuff.

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Old 02-01-2006, 04:26 PM
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Sure do...swap it for a V8.

Just kidding.

What kind of 'tips" are you looking for? Any specific questions?
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Old 02-01-2006, 07:05 PM
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Quote:
Originally Posted by joe350s10
Sure do...swap it for a V8.

Just kidding.

What kind of 'tips" are you looking for? Any specific questions?
not that funny......besides,if I had a V8 in my hot rod,I would be like all the rest of you.That sounds boring.
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Old 02-01-2006, 07:11 PM
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Try www.inliners.org those guys specialize in the inline engines..

OMT
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I have tried most all of it and now do what is known to work..
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Old 02-02-2006, 09:06 AM
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OMT....thanks for the link....and not makeing fun of me....lol
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Old 02-02-2006, 10:46 AM
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Straight Eights

What type? Those straight eight Buicks were a runnin son of a gun and were tough. Packards were strong, but never saw one inanything but a Packard. (Or a P.T.boat.) Friend had a Pontiac witha split manifold and duals, sounded nice.
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Old 02-04-2006, 11:51 AM
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I actualy hav 3 buick eights,and one flathead pontiac.
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Old 02-04-2006, 01:38 PM
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Quote:
Originally Posted by evilone
not that funny......besides,if I had a V8 in my hot rod,I would be like all the rest of you.That sounds boring.
Didn't seem that he was poking fun at you, sounds like he was just kidding.

By the way, nothing like the pure torque of a big block. low and mean.

I think its cool that you are into inlines. I've got a good friend that has an old Duster wanna be with a straight six, pretty darn quick. Not no high power V8 though.....
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Old 02-04-2006, 02:02 PM
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Quote:
Originally Posted by 41willys
Didn't seem that he was poking fun at you, sounds like he was just kidding.

By the way, nothing like the pure torque of a big block. low and mean.

I think its cool that you are into inlines. I've got a good friend that has an old Duster wanna be with a straight six, pretty darn quick. Not no high power V8 though.....
I know what you are talking about,I had a 49 Merc drag car with a 540 ci BBC in it,I have a 78 Malibu with a 406 ci SBC,and lots of other "race car" type stuff.Thats not what im goin for on this one.If I wanted to go fast,I would put a BBC in this project.I am going with a "old school" theme here.Thats why Im leaning towards the straight 8.Pluss....I think its cool.
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Old 02-04-2006, 02:06 PM
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Pluss....Im probably a little touchy about it,because every time I ask a question about a inline 8 one here(or anywhere else for that matter)I get the whole...."why dont you put a SBC init?" thing.If I wanted to put a SBC init....I would start a thread about SBC vs Inline 8......no contest......dont you think?
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Old 02-04-2006, 05:51 PM
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Straight 8

Evilone,
I have a 47 Pontiac 247 cuin straight 8 in a fast back body and have enjoyed it for the last ten years. I rebuilt the entire engine at that time and havent had a problem since. It has the same power as a 250 Chevy 6 cylinder with more torque. If you would like more info let me know. Oh yeah. your right, if you put a small block in this car you will be just like every body else. Good luck, Steve
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Old 02-04-2006, 08:31 PM
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if the car isn't a restoration, a well-matched turbo would be interesting.

I always thought a turbo-six Jeep CJ would be a fun project... but I'm poor.
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Old 02-04-2006, 09:53 PM
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Just to pique your interest, I sold a bunch of Buick stuff a few years back that included a 2X2 intake manifold, a single 4 barrel intake manifold, and a set of factory built cast iron headers. Stuff is out there, it is just a little hard to find. And nothing sounds like a straight 8 buick with real dual exhausts.
Many stock class records were held by straight 8 Buicks until NHRA revised their rules and kicked out the "old" stockers.
You might also check with the guys that race at places like Bonneville; there are a few straight 8 Buicks that hold records. I saw a "lakester" at Pomona with a turboed straight 8 that had gone well over 200MPH.
If you are serios about straight 8's, stick with the overhead valve ones; they will make a whole lot more power and live a lot longer when modified than a flathead.
FWIW, when I was a kid, a buddy's dad had a 53 Packard Caribbean with 3 speed overdrive and a McCullogh (Paxton) supercharger on it. It would bury the speedometer in second overdrive and was about the fastest street car around. That thing flew!!!!
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Old 02-06-2006, 10:34 AM
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The straight 8 is going in a 28"A" sedan that Im building.The turbo idea sounds real cool,but im usualy broke....lol.I would like to keep it kinda mild.I live on the east coast,and would like to drive it to Bonneville in 2007.So im thinking of building one motor fairly stock,and another all hoped up,for around town.Thanks for the replys guys!
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Old 02-06-2006, 10:54 AM
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In-line engines generally produce more torque in the lower rpm ranges than Vs. The straight 8 isn't going to be a high rpm engine, so may as well get a cam cut for grunt. Those things generally have a long stroke, but that's not as much the problem as the five main bearings (one between each two cylinders)! Some of the last, bigger ones had nine mains (one between each cylinder) and will turn up a good bit more, but still long stroke.

The biggest problem is equal fuel delivery. I'd make a log type split manifold and stick a carb in the center of each. Make it look like two four cylinder intakes. That's basically what Buick and Olds did with multi carbs on their last I-8s. Which makes me wonder about port arrangement and spacing... like are there any four manifolds close enough to work with a little modification? I doubt it, but it's a nice thought! Exhaust isn't as much of a problem, but split into parallel duals would be nice. Even better would be an EFI system. A V-8 controller would work just fine! Steel tubing log manifold with injector bungs, pair of four cylinder throtlle bodies (with TPS connected on just one), and you'd be all set!

I've had stock cams reground for old Rambler in-line sixes, but I wonder if anyone like Crane and Lunati still has the equipment to grind a cam that long!!

Last edited by farna; 02-06-2006 at 10:56 AM. Reason: additional info
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