Re: 350/290 Crate vs. stock 72 350 4bbl power?
Ok, so you already have the motor so you are already committed.
If it was me, I would drive it for 3-6 months and then solve whether or not I was happy with the performance and if it felt 50-75hp stronger than my original motor, etc.
Now for me (and we are all different), I would want it mostly on take off and in the lower range...up to 50mph.
Now, if the 290hp simply didn't feel like it was putting out....I would then spec a new cam to put in it...and I wouldn't worry about the 'warranty issues'...and the odds of the engine failing are low if the swap is done well.
The cam I would pursue would focus more on lift and lobe separation than duration. So I would be happy for forgo the 'lumpity lump, long duration sound for the performance at lower speeds.
Regardless, drop it in...fire it up and take it for a drive and let us know what you think.
All good
Coley
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....for some men, there is experience, skill and effort....for the others...there is visa and UPS LOL
1966 Chevy 1/2 ton (Florida- Red/white)
1972 Chevy 1/2 ton (California- Blue/white)
2005 Chevy Silverado HD2500/Duramax
2000 Dodge Ram 1500
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