327 or 350 and why?
Drifting
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Re: 327 or 350 and why? (mncus11)
Depends on the individual engine but generally the 350 prepared idenically to the 327 has a lower RPM red line and but more more torque because of it's longer crankshaft stroke and a tiny bit more horsepower because of it's 23 more cubic inches of displacement. But here's a example of it not working that way. A '65 327/345 horse (I could have made it a 375 horse fuelie!) vs. a 180 horse late 70's 350. Sorry for the strange answer but it's not a cut and dried question.
Team Owner
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From: Middletown Connecticut
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Re: 327 or 350 and why? (joe73vette)
I'm pretty sure the 350 hp 327 was hydraulic.. at least thats what they say in summitt.
I took the 300horse 350 out of my 69 and built a 327 how i wanted it.. best decision i ever made. car runs to 7 grand no problem and the gas mileage is great. (btw its a 13 second car with stock auto tranny and highway gears)
I took the 300horse 350 out of my 69 and built a 327 how i wanted it.. best decision i ever made. car runs to 7 grand no problem and the gas mileage is great. (btw its a 13 second car with stock auto tranny and highway gears)
Melting Slicks
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From: Halifax, Nova Scotia, Canada
Re: 327 or 350 and why? (mncus11)
In a general statement, if a 327 and a 350 are built identical, the 350 will be the faster engine.
A true 327/350 is a hydraulic cam engine, 11:1 comp, 2.02 heads. A very nice setup.
A true 327/350 is a hydraulic cam engine, 11:1 comp, 2.02 heads. A very nice setup.
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From: Fort Worth Texas
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Re: 327 or 350 and why? (mncus11)
a 327 has advantages being a fast revving motor, and the short stroke is conducive to a lot of RPM which compensates for displacement since the engine is really just a pump.
A 327 can be a great drag setup with the right gears etc, and can be quicker than a comparitivly cammed/headed 350 in short distances.
Physically a 327 and 350 are basically identical except for stroke.
A 327 can be a great drag setup with the right gears etc, and can be quicker than a comparitivly cammed/headed 350 in short distances.
Physically a 327 and 350 are basically identical except for stroke.
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Intermediate
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From: phila pa
Re: 327 or 350 and why? (mncus11)
i guess it all depends on what u want to use the car for, what i get from it is drag racing = 350 and auto cross typ racing is 327 i could buy the 327 for 300$ i dot know what to do
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From: Boston
Re: 327 or 350 and why? (blackLS1)
I, my self like the idea of a high winding engine like the 327 can be but that's me. If you're gonna use the engine for street go with a 350, it will have better toque at low rpms, if you wanna race it in a road course, you can use both, because both the 327/350 with the right parts can rev past 7000rpms. But thats not the normal "cruise around town" kind of engine, so it's up to you.
Paul
Paul
Burning Brakes
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From: Ajax Ontario
Re: 327 or 350 and why? (inferno-vette)
The 327/350 is a high revver that comes alive around 2000rpm or so, hence was only sold with a 4 speed. A 350 would provide better bottom end (assuming fairly stock) than a comparable 327. A fun motor with the 4 speed and higher gears, but doesn't have the off the line pull that the 300hp 327 or 350 would have. Mine deliberately doesn't have the 11 to 1 compression, so as to survive on today's premium unleaded.
Summary: If you want a high revving small block, go for the 327/350...if you want better pull off the line, go with a 350.
Summary: If you want a high revving small block, go for the 327/350...if you want better pull off the line, go with a 350.
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From: Reno Nevada
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Re: 327 or 350 and why? (kewlbrz)
Kewlbrz - Physically a 327 and 350 are basically identical except for stroke.
Not True!
You don't want any of the early small journal 327's very prone to breakage caused by flex cracks. I'm not sure which year any more that they went to larger journal and being interchangable with 350 cranks. But it must have been around 1968. I built a killer 336 ci 3.25X4.060 But there really isn't a reason too do it. I only started the project as a circle track motor that was in a carb CFM limited class. So the test was to make a smaller motor spin faster than the normal 355 358 ci guys. It worked! But we had to do lots of tear down inspections for suspected cheating.
Gas mileage is more a function of how efficient your motor is and rear end gears. I really don't think you would see any difference.
[Modified by gkull, 10:07 AM 6/17/2002]
Not True!
You don't want any of the early small journal 327's very prone to breakage caused by flex cracks. I'm not sure which year any more that they went to larger journal and being interchangable with 350 cranks. But it must have been around 1968. I built a killer 336 ci 3.25X4.060 But there really isn't a reason too do it. I only started the project as a circle track motor that was in a carb CFM limited class. So the test was to make a smaller motor spin faster than the normal 355 358 ci guys. It worked! But we had to do lots of tear down inspections for suspected cheating.
Gas mileage is more a function of how efficient your motor is and rear end gears. I really don't think you would see any difference.
[Modified by gkull, 10:07 AM 6/17/2002]
Safety Car
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From: Middleboro/Boston MA
Re: 327 or 350 and why? (mncus11)
i could buy the 327 for 300$ i dont know what to do
a big build up 350 project.
[Modified by Crazyhorse, 9:50 AM 6/17/2002]
C6 the C5 of tomorrow
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From: Twin Cities Minnesota
Re: 327 or 350 and why? (Crazyhorse)
Yea a $300 motor is dirt cheap!
But otherwise there is No reason to build a 327 unless sanctioning rules require it!
My 434 will run to 7000rpm, it's the valve train thats the limiting factor, to the crank...
It also puts out 500 ft/lbs of torque, do THAT with a 327 :lol:
Biggrer is better...
But otherwise there is No reason to build a 327 unless sanctioning rules require it!
My 434 will run to 7000rpm, it's the valve train thats the limiting factor, to the crank...
It also puts out 500 ft/lbs of torque, do THAT with a 327 :lol:
Biggrer is better...
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From: Fort Worth Texas
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Re: 327 or 350 and why? (427V8)
gkull, thanks for the clarification on the journals.
427V8, some other scenarios where bigger is not always better:
Weight
Quick Revving (not necessarily high revving)
better durability
427V8, some other scenarios where bigger is not always better:
Weight
Quick Revving (not necessarily high revving)
better durability
Safety Car
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From: Clymer PA
Re: 327 or 350 and why? (mncus11)
Personally I would have to disagree with some people on this one. A 350 is a nice engine don't get me wrong, but a 327 is just as nice. My buddy has a mild 327 in his S10 and there is no question in my mind that it is a much smoother revving engine than a comparable 350. The 327 has an excellent rod to stroke ratio and I wouldn't think twice about revving it to 7000RPMs. Given the choice I'd probably take a 327....I'm still kind of wishing I had built a 427 instead of a 454.
[Modified by bence13_33, 4:16 PM 6/17/2002]
[Modified by bence13_33, 4:16 PM 6/17/2002]
Drifting
Joined: Jun 1999
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Re: 327 or 350 and why? (bence13_33)
Thing with everyone doing the "bigger is better" thing, does it embarras you when your 610 BB gets smoked by a well set up 302? Don't laugh, some of those 5.0's run 8's. :smash:
Melting Slicks
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From: Tucson AZ
Re: 327 or 350 and why? (gkull)
While by no means an expert, have to agree with gkull. Gas mileage is definitely a function of efficiency.
To answer your question directly - is there anything wrong with the 350? The 350 is the more built proof block. I see no reason to get a god deal on an engine that you don't need. There is no guarantee that the enine will not give out on you later. The cost to build the 350 the way you want could turn out to be less in the end. If yu need an engine - buy it. If not - keep the 350.
My .02
To answer your question directly - is there anything wrong with the 350? The 350 is the more built proof block. I see no reason to get a god deal on an engine that you don't need. There is no guarantee that the enine will not give out on you later. The cost to build the 350 the way you want could turn out to be less in the end. If yu need an engine - buy it. If not - keep the 350.
My .02