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  #16 (permalink)  
Old 04-20-2010, 09:35 PM
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How much can the stock rotating assembly handle? With the 350

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  #17 (permalink)  
Old 04-20-2010, 10:54 PM
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327
The 327 cu in (5.4 L) V8, introduced in 1962, had a bore and stroke of 4 in (102 mm) by 3.25 in. Power ranged from 250 hp (186 kW) L30 to 375 hp (280 kW) depending on the choice of carburetor or fuel injection, camshaft, cylinder heads, pistons and intake manifold. In 1962, the Duntov solid lifter cam versions produced 340 hp (254 kW), 344 lbft (466 Nm) with single Carter 4-barrel, and 360 hp (268 kW), 352 lbft (477 Nm) with Rochester mechanical fuel injection. In 1964, horsepower increased to 365 hp (272 kW) for the now dubbed L-79 version, and 375 hp (280 kW) for the fuel injected L-84 respectively, making the L-84 the most powerful naturally aspirated, single-cam, production small block V8 (aside from the limited-run Ford Boss 351) until the appearance of the 385 hp (287 kW), 385 lbft (522 Nm) Generation III LS6 in 2001. This block is one of three displacements that underwent a major change in 1968/1969 when the main journal size was increased from 2.30 inches (58.4 mm) to 2.45 inches (62.2 mm).
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  #18 (permalink)  
Old 04-21-2010, 06:25 AM
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IIRC, the L79 was either 325 or 350 HP. There were lower ratings than 250 HP.
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  #19 (permalink)  
Old 04-21-2010, 06:37 AM
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those rating were also much different then than they are today.

I don't think anyone here will argue that if you build a 327 and a 350 using all of the L-84 specs (except crank throw and piston pin height) the 350 will produce more power.
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  #20 (permalink)  
Old 04-21-2010, 07:40 AM
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Quote:
Originally Posted by ap72
those rating were also much different then than they are today.

I don't think anyone here will argue that if you build a 327 and a 350 using all of the L-84 specs (except crank throw and piston pin height) the 350 will produce more power.
Plus those big numbers were made w/CR's too high for today's pump swill- especially using the old-tech, closed chamber, iron heads...
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  #21 (permalink)  
Old 04-21-2010, 07:43 AM
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Think about this. The 327 and the 350 is just a under 1/4". (.23"). The difference in HP is not much.
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  #22 (permalink)  
Old 04-21-2010, 08:05 AM
How fast is fast enough?
 
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Quote:
Originally Posted by lg1969
Think about this. The 327 and the 350 is just a under 1/4". (.23"). The difference in HP is not much.
the difference between a 383 and a 350 is about 1/4" as well. The difference between a 400 and a 383 is 1/8"...

There's still a difference.

displacement wise a 350 is about 7% larger than a 327. on a 1.25hp/ci build (hot street) you're looking at almost a 30hp difference.
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Old 04-21-2010, 08:19 AM
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There is a differnce in a 350 and 383. 383 and a 400. Your changing bore and stroke. I'm refering to stroke only.
283 and a 307 is 10HP difference.
You take 327 and a 350 with the exact parts the HP will be 10 to 15.
And if you build a 302 and 327 with the exact parts, it will be 10 to 15 HP difference.
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  #24 (permalink)  
Old 04-21-2010, 08:28 AM
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Quote:
Originally Posted by lg1969
And if you build a 302 and 327 with the exact parts, it will be 10 to 15 HP difference.

that depends on the limiting factors. There could be almost no difference, or the difference could be huge.
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  #25 (permalink)  
Old 04-21-2010, 08:30 AM
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Quote:
Originally Posted by lg1969
Think about this. The 327 and the 350 is just a under 1/4". (.23"). The difference in HP is not much.
The 327 engine from the bus that the OP's considering has very poor heads, very likely w/1.72" intake valves and small, poor flowing ports- nothing that you could even easily make 300 HP with, w/o doing a lot of work- let alone 400-plus HP.

All that might be "good" about that 327 is the short block, but after a lifetime of bus duty, it will no doubt need a complete rebuild.

For the same money, the OP could start w/an engine that will have the potential (Vortec heads, roller cam from the factory, more displacement, etc.) to make 400 HP w/o breaking a sweat. To do that w/the bus-spec 327- using a flat tappet cam or a $500-600 retro roller set-up- will take different heads at a minimum- heads that he will already have, should he buy a used L31. Plus all the parts like the intake, carb, distributor, headers, etc. that either engine will need.

The bus engine is not a deal, even if it were free, IMHO.
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  #26 (permalink)  
Old 04-21-2010, 08:46 AM
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Quote:
Originally Posted by cobalt327
The bus engine is not a deal, even if it were free, IMHO.
I'd take it for free. Any more would be pushing it though, maybe $50 if it had minimal bore wear.
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  #27 (permalink)  
Old 04-21-2010, 11:15 AM
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Well it runs heh i know that much i still want to get it just to build one for the heck of it heh
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  #28 (permalink)  
Old 04-21-2010, 12:27 PM
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Do it
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  #29 (permalink)  
Old 04-21-2010, 01:06 PM
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I was going to stay out of this one until I read this............

Quote:
Originally Posted by cobalt327
The 327 engine from the bus that the OP's considering has very poor heads, very likely w/1.72" intake valves and small, poor flowing ports- nothing that you could even easily make 300 HP with, w/o doing a lot of work- let alone 400-plus HP.

All that might be "good" about that 327 is the short block, but after a lifetime of bus duty, it will no doubt need a complete rebuild.

For the same money, the OP could start w/an engine that will have the potential (Vortec heads, roller cam from the factory, more displacement, etc.) to make 400 HP w/o breaking a sweat. To do that w/the bus-spec 327- using a flat tappet cam or a $500-600 retro roller set-up- will take different heads at a minimum- heads that he will already have, should he buy a used L31. Plus all the parts like the intake, carb, distributor, headers, etc. that either engine will need.

The bus engine is not a deal, even if it were free, IMHO.

I love a good 327 and the 331 version was legendary in the early days of Pro Stock but I couldn't aqree with Cobalt327 more! The truck 327's were nothing special and saw lots of abuse. Find a roller block 350 and don't look back. The guy has "327" right in his user name fer Chrysler's sake and he's telling you to pass, that's Karma.
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  #30 (permalink)  
Old 04-21-2010, 05:41 PM
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Hehe i probly wont get it ill just go with the 350 trying to get a picture of the cylinder i was told it probly is ok its not deep at all i had my friend look at it and he says i should throws heads on it and a camshaft and lifters new pushrods and go at it.
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