[67GTclOne]

What would it take to do this and would it be worth it? I have a 400 right now, and am already planning on boring it over .030". What all would need to be done to make it a 455? even bigger bore? I just think it would be kinda cool to have a 455 Le Mans

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car

[67GTclOne]

What would it take to do this and would it be worth it? I have a 400 right now, and am already planning on boring it over .030". What all would need to be done to make it a 455? even bigger bore? I just think it would be kinda cool to have a 455 Le Mans

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car

[Doug Christie]

67GTclOne, It will take about $2500.00 It is the prefered method of building a 455. What your asking about is stroking your 400. There are crank,rod,piston kits out there that will get you what you want. Or,you can put a 455 crank in your 400 by machining the main journals down to 3" and offset grind the rod journals to accept a BB Chebby rod. Check out summit or Pontiac dudes site. They can set you up.

Pontiac Dudes site: http://www.angelfire.com/fl4/pontiac...chineshop.html

'73 455 .030, stock cast pistons, stock rods all ballanced, 86 cc 6X 8 2.11/1.77 hand ported,stock intake,750 Qjet, SpeedPro 1175 cam, 3.73:1 10 bolt posi, slapper bars, MT ET Streets, Best ET 12.12 Best 60'1.43 Top MPH 109

[PONTIAC DUDE]

And here's the link to the 455/400 crank assembly special that you can use with your rods and just buy the cast or forged 455 std bore pistons (bore your 400 block .030) and your ready to go.

http://www.angelfire.com/fl4/pontiac...sspecials.html

Plus ya show your friends the code on the side and say. hey it's ONLY a stock 400 with an RV cam.

************************************************** ***************************

Build it fast, build it right, build a Pontiac.


http://PontiacDude.cc

[67GTclOne]

Sounds simple enough, thanks guys

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car

[67GTclOne]

another question...would I still be able to use the same harmonic balancer or would I have to get a new one?

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car

[WARPed]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by 67GTclOne:
another question...would I still be able to use the same harmonic balancer or would I have to get a new one?

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car<HR></BLOCKQUOTE>

Same one will work. But I think you should go to the 68+ timing cover & balancer if you haven't already done so.

with out questions there can be no answers

1969 Grand Prix
9.947@133.53(1.358)
6.246@107.91(1.342)
WARPed Tepee Forums
alex@pontiacgroup.com

[Squidward]

Mmmm... New deliciously evil ways to spend the tax refund...

"...ridge reamer and ring compressor? Do they have tools like that?"

[67GTclOne]

lol the car is what my taxes bought...didnt get a full return since I didn't work the whole year last year oh well...with hardly any bills shouldnt take me long work up 1350

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car

[67GTclOne]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by WARPed:
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by 67GTclOne:
another question...would I still be able to use the same harmonic balancer or would I have to get a new one?

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car<HR></BLOCKQUOTE>

Same one will work. But I think you should go to the 68+ timing cover & balancer if you haven't already done so.

with out questions there can be no answers

1969 Grand Prix
9.947@133.53(1.358)
6.246@107.91(1.342)
WARPed Tepee Forums
alex@pontiacgroup.com<HR></BLOCKQUOTE>

I probably already have those...the engine is out of a 69 Grand Prix...

-1997 Pontiac Firebird V6 A4
-1967 Pontiac Le Mans project car