INTRO 35 years later……

35 years after we found the 67 cutlass supreme she now resides in my garage. I found her when I was 11 when my Dad wanted to relive driving the first car he ever bought. After many years of him trying to give her to me, I finally hit the title on Father’s Day this year.

She has the stock 330 which I want to keep and tastefully give her a facelift and some more hp. This is the main reason I am here. I’ve been down the Jeep rabbit hole for the last 15 years where I slowly started getting my hands dirty. I figure if you want to know the answers then ask the experts like I did during my jeeping experience.

If anyone has any recommendations to keep her basically stock but add some hp then I’m all ears.
I tore the inside apart to rust proof as well as the trunk. She no longer snells of moth balls. Now I’m ready to take on the motor for winter. Thanks in advance.

Thank you for the reply. The only thing my dad had done was put a 4 bbl edelbrock on there. I have a slight miss that I’m tracing down but she drives really well. Only 70k miles. Auto trans. I’ll be doing a little tune up in the next couple weeks. New cap and rotor, spark plugs and wires, and ignition coil. I want to get the right parts now and not do it twice with some of my Jeep experiences.

Rocketman269V said:

Edelbrock, as in carburetor or intake or both. Was it a 4-bbl from the factory? The factory 4-bbl engines were higher compression and made more power. The first thing would be to do a "compression check". Make sure the engine is warm; remove all 8 spark plugs; disconnect the coil (+) wires; hook the throttle return spring to hold the throttle wide open and crank the engine over at least three revolutions per cylinder. All cylinders should be within a small percentage of each other. Depending on your "cranking pressure" readings, you can get somewhat of an idea if it's a high or low compression engine. This will also tell you if all eight are contributing equally to the power output.

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I honestly do not know. I believe I have the build sheet in my paperwork. I’ve never touched an engine in my life besides a throttle body. I’ve got some great friends that will be helping me do the compression check as you suggested.