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Old 05-18-2023, 12:50 PM   #47
MARKDTN
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Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,134
Re: 71 350 Rebuild advice needed - Head and Cam Suggestions

Quote:
Originally Posted by ghackett1 View Post
Here’s the 72 Z28 I was referring to, I’ve owned it for 28 years—the Original LT1 350 is the same foundation you are starting with. Good luck with your build, in my truck I dropped in a 355/390HP crate engine and love it—so your options are unlimited!
That is a beautiful car!

FYI-But same foundation is only if you squint really hard. Might both have an 010 casting 350 block but that is where the similarities start to fade. A 1972 LT1 is 9:1 compression (in '70 it was 11:1), 4 bolt mains, steel crank shaft, solid lifter engine. A 1972 Biscane 350 is 8.5:1 compression, 2 -bolt mains, Cast crank, hydraulic lifter engine. All those things interchange for the most part, but are much more heavy duty and/or performance oriented for the LT1. LT1 also had a bigger oil pan, windage tray, different timing chain, better connecting rods, and so forth than the low HP 350s that year.
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'83 K20-TPI
'73 C10
'79 C10-ex-diesel(SOLD)
'07 Tahoe(Son driving)
'14 Suburban-DD
'71 C10-current project

Last edited by MARKDTN; 05-18-2023 at 02:50 PM.
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