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Old 07-16-2003, 03:33 AM
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327 or 400?

I have both a 327 and a 400. both need rebuilt which one do u all think would be the better motor to rebuild. I want it for the street but also be able to drive it everyday. So i would like some input on which one is the better one.
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Old 07-16-2003, 04:46 AM
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depends on what you want it to do, if you want decent milage, the 327 with the right internals would serve you nicely, if you want good power and don`t mind some extra for fuel, or if you intend on towing with it on occasion, or want a real out of the hole torque engine, the 400 is for you.
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Old 07-16-2003, 08:15 AM
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In my opinion, bigger is better. I would rebuild the 400 because what ever you did to the 327, you could do to the 400 and get more power just because of the cubes.
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Old 07-16-2003, 08:23 AM
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There's no replacement for displacement

Honestly though, if you throw on some fuel injection on that 400, then (depending on your tranny, 5 or 6 speed?), you'll have fine mileage.
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Old 07-16-2003, 11:16 AM
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Quote:
Originally posted by gt2betubbed
In my opinion, bigger is better. I would rebuild the 400 because what ever you did to the 327, you could do to the 400 and get more power just because of the cubes.

I agree, for a high winding gear jamming street/strip car the 327's are a load of fun, but for a heavy street only car Id build the 400 (very mild) 270/280 209/216 .435/.456 112, a good dual plane intake (weiand stealth) the carb is up to you but id at least run a 670cfm...add 1 5/8 headers and 2 1/2 inch exhaust...The cam is a doug herbert grind, and the cam and lifters only cost 104.99 just my .02

Last edited by 2wld4u; 07-16-2003 at 11:23 AM.
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Old 07-16-2003, 12:21 PM
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327, no question the better engine (sorry 400 lovers).
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Old 07-16-2003, 12:39 PM
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Quote:
Originally posted by 4 Jaw Chuck
327, no question the better engine (sorry 400 lovers).
yeah, but your not going to get 400ft lbs with a cam that small in a 327
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Old 07-16-2003, 01:33 PM
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Hey,
Why not throw the 400 crank in the 327. 400's were prone to overheating.
Vern
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Old 07-16-2003, 02:14 PM
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Quote:
yeah, but your not going to get 400ft lbs with a cam that small in a 327
I didn't hear a cam mentioned? Put a bigger cam in the 327 and turn it 7500 rpm, lets see the 400 do that without a new bottom end. Gonna need some heads though.
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Old 07-16-2003, 05:26 PM
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I have both engines. The 400 is very stout for the torque that can be built thru it and it WILL NOT overheat no more than any other engine if correct cooling system is there. The 400 is in a heavy car so it fits its bill. For the 327 it is in a lighter car and is one awesome street engine. As for getting 400 ft-lbs outta of a 327 there is no problem. As mentioned earlier it depends on whether you want a low end torque monster or a screamer
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Old 07-16-2003, 06:26 PM
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like most people have mentioned it really depends what your trying to do and at what rpm , 400s are certainly high torquers and usually have no more over heating than 350s as long as the steam ports are drilled and the cooling system is up to par. however they will not rev where the 327 will go without scattering and are prone to blowing head gaskets especially when you add compression, on the other hand the 327 will not touch it in the low end grunt department and takes a bit of building to get it to the same torque level that the 400 already has and you would still have to gear it so it could perform at that level .
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Old 07-16-2003, 06:30 PM
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Spin anything to 7500 on a regular basis and you're going to scatter it all over the place...build for torque and keep it under 6500...
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Old 07-16-2003, 06:41 PM
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Quote:
Spin anything to 7500 on a regular basis and you're going to scatter it all over the place...
There are quite a few 8000 rpm 327's kickin around these parts, I think this was the best small block configuration that ever came from Chevy. Lots of meat in that block and they can take an overheat or two, can't kill-em.

Just never overheat that 400, it will never be the same after.
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Old 07-16-2003, 08:45 PM
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Quote:
Originally posted by 4 Jaw Chuck
There are quite a few 8000 rpm 327's kickin around these parts, I think this was the best small block configuration that ever came from Chevy. Lots of meat in that block and they can take an overheat or two, can't kill-em.

Just never overheat that 400, it will never be the same after.
I know what yer saying 4 jaw, I like the 327 also but for a street only ride the torque is nice to have and easy on parts...some of the fastest cars I have ever rode in were 327's but you have to look at the use of the motor described and realize that the torque of a 400 might better suit a street only ride and have better "seat of the pants" feel at low rpm (where street motors live) than that of a 327 thats all I was getting at....
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Old 07-16-2003, 11:38 PM
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What size car is it going in.If it a big heavy car i would probley go with the 400.It souds like you want something to drive daily and beable to roast the tires when ever you want to.But like the other guys say if your want to wind the daylights out of it i love the 327 and in a lighter car you could still roast the tires off and wind the guts out of it.
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