pontiac 1967 400CID manual engine rebuilding

Dedek963

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One of the reasons somebody used 421 parts might be the fact that in 1964Car and Driver published a road test of GTO.
That car prepared Jim Wanger Who used some parts from 421.
Although the parts used in the test were not the parts used in my car... It could have been be some "hint" :)
 

Dedek963

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The vehicle history is following:
At least between the years 1990-2017 was the car owned by one owner, who is now at least 60+. In those years nobody opened the engine. Only normal service has been made.
Between 1990-2017 only 3000! miles were driven.
I bought the vehicle in 2017 in USA and brought it to Europe.
2017-2018 another 2300 miles came to the odometer.
The engine is now open after at least 28 years for the first time.
According to the lenght of distribution chain I guess that this modification sits in the engine for more than 40000 miles.
I have no idea when it was made, but my guess would be no later than 1975...
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Dedek963

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Hi,
now I have the estimation from Butlerperformance for rotating components, sealings and gaskets and we are working on camshaft and accesories.
 

melsg5

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Ok good luck and keep us posted on how it goes.
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Dedek963

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Hi,
finally I have the quote finished:
here it is:
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Balanced Rotating Assembly-3"Mains, 4.250 Str., 6.800 Rod

Pontiac 400 Eagle Cast Crank 3.00" Mains 4.250 Stroke 2.200 Rod Journals

Pontiac 350-389-400 Federal Mogul Race Main Bearings - Pontiac-STD (Set)
ROSS .990 X 2.500" Ross Wrist Pins, 5115 Chromoly, .150"Straight wall/128 gram (Set)

Pontiac ROSS Reverse Dome Pistons-Custom (Set/8)* 4.155, 1.295, 1/16 1/16 1/16 3/16, 72CC HEADS 670, 9.7 CR (this is going to be changed to 10,5 CR)


BBC Eagle CRS 6.800 H Beam 4340 Forged Rods w/ 8740 Bolts 2.200 r.j.-.990 Pins Bushed (Set)

4.155 1/16 1/16 3/16 TS Classic Race Rings - File Fit (Set) (4.150 Oil Ring)

Pontiac RA/SD High Vol. 80 psi Oil Pump-w/o Pick-Up

Pontiac Pro Billet Timing Set

Pontiac Comp Custom Grind Billet Roller Cam (HR) (Std Firing Order/Std Journals) 282/288, 230/236,.510/.521, 114LS

Johnson Lifters, Pontiac Lifter Set, Hi-Perf Hydraulic Roller, 326-455, Set/16

Pontiac 1.5 Ratio Aluminum Roller Rocker Set

1.437 Dual Springs 115 @ 1.700, 340 @ 1.150, Coil Bind 1.050 (Set)

(Of course this are not all parts, just the most important ones)
 

melsg5

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Your gasoline octane will support a 10.5 compression ratio?
Concerning the camshaft that was selected, did they discuss with you the type of transmission, manual or automatic, if automatic the stall speed, and the rear end gear ratio?
Did they give an estimated horse power?
 

Dedek963

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Well... I discussed it with Jim Butler and we agreed that 10.0 is very safe. 10.5 is maybe OK.
Then they changed it to 9.7 to be safe.
After todays discussion we stay at 9.7 to be very safe.

Yes, they are aware of that fact that I have 4 speed manual and they know that my rear end is some 4.11.

I do not have the HP estimation. After driving some first thousand miles, I will measure it.

The pitty is, that the custom pistons will be ready first in 6-8 weeks... :-( Than transport 2 weeks, customs 2 weeks, engine honing etc 2 weeks, assembly 2 weeks... With some luck the engine will run at the Christmas...
 

melsg5

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that is going to be a very fast car with that size engine and those rear end gears.
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Dedek963

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that is going to be a very fast car with that size engine and those rear end gears.
Because of the delivery duration I had time to go a little bit further with the changes and I ordered Holley sniper jet injection and advanced MSD ignition connected to this Sniper jet.
This is going to replace the standard Quadrajet and factory ignition. :)
 
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