403 ?

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January 20th, 2008, 01:19 PM

#41

78cutlass

Join Date: Jan 2008

Location: Florida

Posts: 134

Olds 403 build-up

Has anybody built an Olds 403 using #5 heads? If so, how did you like the engine's performance? I'm thinking of building such a 403 for my '87 Cutlass, which is 307 equipped.

January 20th, 2008, 01:27 PM

#42

78cutlass

Join Date: Jan 2008

Location: Florida

Posts: 134

get yourself a set of #5 heads. That'll surely wake-up a 403.

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Ported #5 heads, running 403, TRW 403 Pistons, 7 quart pan

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sorry for the error, (403 to 455

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