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Old 10-25-2010, 05:20 PM
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Rebuild 400 or search for 455

I am not much of an engine guy I have a 71 Lemans Sport, I was searching for a 455 but today i was talking to a guy and he said they are hard to come by so he offerd me a two 400. I am looking for a crusier mainly but somtheing that if i punch the gas i want it to go. This is what he offerd me let me know what you think

1)
* 400 block bored, honed, decked and align honed
* Performance camshaft:
o 214/224 @ .050 (specs may change)
o .465 lift
o 112 lobe center
* New cam bearings
* Balanced rotating assembly with balancer
o Reground 3.75" stroke crankshaft ( add 350.00 for new)

o Forged rods with ARPR rod bolts

o New performance bearings
* Performance pistons with MollyR rings( add 400.00 for forged)
o 9.3 to 1 compression ratio
* New timing set
* New high volume oil pump
* New performance gasket set
Pontiac Heads includes:
* 2.11/1.77 new stainless valves
* Aluminum heads available (-add 2000.00 )
* Bronze guides
* 3 angle seats
* Matching springs
* New push rods and stamped rockers (roller rockers add 350.00)
* Painted Pontiac blue
* Bowl porting
* Stage 2 porting ( add 695.00)
* Dial in cam
400 HP
$3995.00+core
or
2)
- 1972 400 with an HO package for $2510
- stock built 340 HP
he did not send me all the detalis but is there anything i should ask him?

or
3)
Do i search for a 455 or better deal?

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Old 10-25-2010, 06:04 PM
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If you're just wanting to build a street car, the 400 will provide plenty of power. It all depends on what you're going to use it for. A 500hp N/A 400 will be more for the strip, but a 500hp N/A 455 will be a lot tamer on the street. If it's going to be less than 450hp, I would just build the 400.
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Old 10-25-2010, 06:14 PM
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Sounds like a infomercial. Don't those engine kits cost about $500?
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Old 10-25-2010, 06:20 PM
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I am not buying a kit i am buying a whole engine. Which option do you think would be a good choice?
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Old 10-25-2010, 06:23 PM
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I wouldn't buy either in a bad economy.
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Old 10-25-2010, 06:29 PM
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If you have the extra money, I would go with the first one. The second one is a stock build so it's going to have factory Pontiac rods that are good to about 5500rpm. The first one has a little insurance in the rotating assembly.
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Old 10-25-2010, 06:32 PM
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Quote:
Originally Posted by studda
If you have the extra money, I would go with the first one. The second one is a stock build so it's going to have factory Pontiac rods that are good to about 5500rpm. The first one has a little insurance in the rotating assembly.
What kind of warranty does it come with?
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Old 10-25-2010, 06:36 PM
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I'm saying you would have a little peace of mind knowing it is built for punishment. Also, make sure whoever did the machine work knows the ins and outs of a Pontiac. They are a whole different beast than a Chevy.
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Old 10-25-2010, 06:37 PM
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the first one comes with a 3 unlimited year and the send with a 7 year 100,000
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Old 10-25-2010, 06:40 PM
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Quote:
Originally Posted by bigpun2000g
the first one comes with a 3 unlimited year and the send with a 7 year 100,000
Who is offering that kind of warranty on a Pontiac engine?
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Old 10-25-2010, 06:42 PM
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the shop that is building it for me is offering it.
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Old 10-25-2010, 06:44 PM
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Quote:
Originally Posted by bigpun2000g
the shop that is building it for me is offering it.
It's not a trick queston what is the shops name?
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Old 10-25-2010, 06:47 PM
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Precision Engine
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Old 10-25-2010, 06:50 PM
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Sounds like a unbelievable warranty since people on the Pontiac BBs are blowing up Ponitacs every other day.
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Old 10-25-2010, 06:58 PM
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so what option do you think is best even if i took the stock could i do the upgrades over time for the same price or less
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