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#1
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Well I just finished correcting a few things on my 69 Orange white stripe RS/Z28:
Carb rebuilt- check Removed aftermarket stereo cassette & installed correct AM radio with rear speaker fader- check Removed and correctly installed new carpeting-check New project removal and rebuild of engine in orange with black stripe 69 RS/Z28. I have antifreeze entering cylinder #8. The engine is ready to pull all everything is disconnected. It could be a head gasket, but two issues the engine had.... low oil pressure and somewhat of a vibration. I had the engine rebuilt by a local engine shop and it produced great HP 411 at 7100. The rub is I had normal oil pressure prior and no vibration( yes I had the flywheel & pressure plate balanced. I was considering purchasing a "modern crate " and install. Also have the original engine rebuilt and stored. Any suggestions? My one thinking has always been the 302 is really the only unique item to a Z28 which is the reason I have stayed with the 302.
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Steve Shauger The Supercar Registry www.yenko.net Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website: www.vintagecertification.com |
#2
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Wouldn't the problem engine have a warranty to take it back and have them diagnose ?
As for the appearance of a 302 under the hood, any small block can be dressed to look like a 302. Honestly, a 383 would make more power at a lower rpm than the 302. If the lifter tick is important, a '70 Z, or custom grind, solid lifter cam would get that for you.
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Mitch 1970 Chevelle SS 1966 Chevelle SS 1967 Camaro ss/rs 1938 Business coupe, street rod 2000 FXSTS, original owner, 13k miles |
#3
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The Following User Says Thank You to 67since67 For This Useful Post: | ||
big gear head (08-12-2024) |
#4
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You're a crankshaft away from a 383. The carb, intake and heads will support it. As you know, I'm a big fan of the LT-1 cam |
#5
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#6
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I considered stroking but again I wanted to feel that high reving low torque 302. Based on the dyno sheets it produced 373 lb/ft of torque. I will likely stay with the orig engine configuration. We will see.....
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Steve Shauger The Supercar Registry www.yenko.net Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website: www.vintagecertification.com |
#7
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Everyone asks the same question about a 69 Z/28.
"Does it still have the 302?" Change cam or compression ratio if you must, but keep that Z 302 powered! |
#8
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A GM crate engine (or any reputable company) will have a warranty, and can be dressed up which you already know. With today’s poor quality of camshaft and lifter failures, you’d be way ahead of the game-driving and enjoying. Rebuilding the engine is great, but unless the machine shop can repair/replace for free if there’s a failure……
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#9
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Steve, for me what makes a 1st gen Z/28 a Z/28 is the 302 engine, not the rally stripes or any other Z/28 standard or optional item. To me a Z/28 with any engine other than a real 302 is no longer a real Z/28. It doesn't have to be the original 302, just a 302 built exactly like the original would have been. My vote is to have the original engine rebuilt and put back into the car.
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#10
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Put the stroker crank in the 302. Tell no one. It will out pull and rev to 7000 no problem.
AND have so much more bottom end torque |
The Following User Says Thank You to LT1vette For This Useful Post: | ||
Tracker1 (08-13-2024) |
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