what r my options?????
July 28th, 2010, 04:01 PM
#1
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Join Date: Feb 2010
Location: Jacksonville,Fl
Posts: 120
what r my options?????
i have a 403 engine and im looking to beef my engine up a little bit.....which cams do i use.????will cams for a 350 fit for a 403 engine...i know the intake will fit and work for the the same????help my out please .....r the specs da same?
July 28th, 2010, 05:37 PM
#2
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Join Date: Jun 2009
Location: Palm Bay, FL
Posts: 4,249
Most everything is the same between the two engines. The pistons and related parts are different, the connecting rods are a bit beefier in the 403 and I think the crank is as well, but don't quote me on that one.
The stroke is the same on all SBO from 260-403. All use the same main and rod bearings, oil pumps, distributors, camshafts, timing chain and gears, fuel pumps (depending on application), oil pans, timing cover, water pump.....
So most of what you're looking for will work without issue.
The stroke is the same on all SBO from 260-403. All use the same main and rod bearings, oil pumps, distributors, camshafts, timing chain and gears, fuel pumps (depending on application), oil pans, timing cover, water pump.....
So most of what you're looking for will work without issue.
July 28th, 2010, 06:58 PM
#3
car guy
Join Date: Apr 2008
Location: Dallas TX
Posts: 5,656
Just drop a 350 Chevy crate motor in it.... 
JK man all the external parts will interchange. The 403 for a mild build will be fine but if you want to really build a SBO motor up consider starting with an early 350 block. The windowed mains in a 403 can ruin you day in a higher HP build.
JK man all the external parts will interchange. The 403 for a mild build will be fine but if you want to really build a SBO motor up consider starting with an early 350 block. The windowed mains in a 403 can ruin you day in a higher HP build.
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