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30/08/2025 7:02 am
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I have a 73 buick riviera ive changed over to fuel injection and added a thumper cam i wanted to know how i could get better gas mileage. and its a 4 barrel 455.
This topic was modified 8 months ago by G.T.
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30/08/2025 7:10 am
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30/08/2025 12:24 pm
added a thumper cam... 4 barrel
un-add those.
That's a massive, old, gas guzzling big-block engine. The biggest Buick ever made. It's never going to be fuel efficient. You need to buy something newer and save this for special occasions.
