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Old 10-19-2007, 01:53 PM
nova ss guy's Avatar
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427 big block

can anyone tell me if i got a 427 big block out of a junk yard vehicle would last if i completly rebuilt the motor or would i expect to replace sumthin everytime i drive the car

thanx , devan

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Old 10-19-2007, 02:59 PM
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About like anything else... If you do it right you have less problems but cut corners and things come around to bite you in the @zz...

Also finding a 427 BBC in a junk yard is very rare but is very rare... (maybe a tall deck...?)
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Old 10-19-2007, 03:03 PM
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427 big block

ok thanks, and just how rare are we talkin here would i expect to pay big bucks for one even if i found it, and can u still get crate 427 bb's from GM or no?
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Old 10-19-2007, 03:12 PM
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Nothing magical about a 427. If you want a big block just find a good used 454 with 781 or 049 heads and rebuild it to your requirements (cam, compression, ect). Should last many years if done right and serviced at regular intervals.

FYI, tough to get good mpg out of a Big Block Chevy. I got my 413 (bored 402) up to 10.5 mpg in the city and 15 highway (70 mph) but had to use a Q-jet carb to do it. Using a Holley 750, it only got 8/12. And this is with a 3.08 gear, auto trans, 4500 pounds, mild cam.
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Old 10-19-2007, 03:21 PM
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427 big block

ok thanks, the motor is goin into a 67 biscayne, and mpg is not a factor to me but it is, thats the only way to explain it for me, im building this car for local shows, would small block be ok, i got sum tips that i could possibly clone a big block biscayne is why im asking, they said it would possibly increase value on the car????
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Old 10-19-2007, 03:27 PM
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What engine is in the car now?
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Old 10-19-2007, 03:29 PM
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427 big block

there's not one i bought the car as a roller im having to do a full resto
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Old 10-19-2007, 03:46 PM
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I see.

I think it would be easier to find a complete 396 or 402 with a th400 trans. A BBC with a short water pump would be the correct version to use in your 67. The alternator is on the drivers side with the short pump. Make sure to get a complete engine with all the tin and pulleys.
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Old 10-19-2007, 03:49 PM
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427 big block

hey, ok ill do that, and one more thing, can you still order a crate 396 or 402 from GM, i kno my grandfather order'd a crate 350 to drop in a 85 silverado but that was in 96 or 97??
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Old 10-19-2007, 04:31 PM
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427 big block

The smallest GM big block crate motor is a 454 HO,but they are known to be oil burners,(most,not all).Few people at car shows will know the difference between a big block with short or long water pumps,and there is no visual difference in any short deck big blocks.As 454C10 said,find a used 454 and build it to your requirements,stroker kits are also available.Theres lots of possibilites,you can build a low revving torque monster that may be just what you are looking for,even the cast crank equipped motors can handle quite a bit of power.You can find lots of useful information in the How To Build Max Performance Chevy Rat Motors book by Ed Staffel.
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Old 10-19-2007, 04:41 PM
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427 big block

yea that i figured, i was just wondering if u could still get a crate 396
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Old 10-19-2007, 06:14 PM
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427 big block

Nope !!!!!!!!!!
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Old 10-19-2007, 06:59 PM
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427 big block

ok thanks and if the there is frame rot present wat could i do to fix that
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Old 10-19-2007, 07:06 PM
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427 big block

Find a buddy that knows how to weld.
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Old 10-19-2007, 11:33 PM
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Well...

Quote:
Originally Posted by nova ss guy
can anyone tell me if i got a 427 big block out of a junk yard vehicle would last if i completly rebuilt the motor or would i expect to replace sumthin everytime i drive the car

thanx , devan
I asked my self - What would I do...
I'd Look for a '70s 1 1/2 ton, 2 1/2 Ton Truck, 5 Ton I'd feel luckey. Could be a 4 bolt Main Block Than put an R-V Cam & 950 cfm Holly, Hooker Headers, Electronic Ign. T-400 With Shift Kit & Heavy Duty Survo. 4:11 Posi.. & Cheeter Slicks. On The Door... 1-2-3 <-

Last edited by AmericanPackMule; 10-19-2007 at 11:56 PM. Reason: Spelling
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