69 400 engine rebuild power/horsepower question..... - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 03-07-2012, 11:14 PM Thread Starter
 
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69 400 engine rebuild power/horsepower question.....

I am getting ready to start tearing down my 400 Pontiac in my 69 GTO. I am trying to come up with my game plan for the rebuild. I am considering putting a 4.25 stroker kit in it and boring it .035. I am leaving the stock heads on the car. It it really worth putting the money into a stroker kit in the engine and is it going to give me that much more power, or should I just bore and hone the block. Any responses would help. Thanks
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post #2 of 2 (permalink) Old 03-08-2012, 07:18 AM
 
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depends on your heads but the answers are yes....you will wind up with a 461 (if it's a virgin block) and yes it will put out around 100+ more hp than a stock 400 build depending on heads and cam

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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion

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