Olds 403

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Feb 3, 2010 | 07:38 PM

kenny

Thread Starter

Registered User

Joined: Sep 2009

Posts: 30

From: Joliet Il

Olds 403

Does anyone have any suggestions on building a nice 403 for a trans am ? I have a very clean 80000 mile complete motor and would like to build a 350 horse weekend driver.

Feb 4, 2010 | 05:08 AM

cutlassefi

Registered User

Joined: Nov 2008

Posts: 8,487

From: Central Fl

Been addressed a million times, a set of 5, 6, or 7 heads, decent cam in the 215-220 range on the intake @ .050, Performer, headers, duals, you're there.

Feb 4, 2010 | 06:54 AM

citcapp

Registered User

Joined: Nov 2007

Posts: 9,127

From: Rathdrum, Idano

Check the small block forum, there are a number of build there. After looking at them ask specific questions. Also work out a budget for the build.

Feb 4, 2010 | 06:59 AM

Warhead

Registered User

Joined: Mar 2008

Posts: 1,012

From: Phx, AZ

Quote:

Originally Posted by cutlassefi

Been addressed a million times, a set of 5, 6, or 7 heads, decent cam in the 215-220 range on the intake @ .050, Performer, headers, duals, you're there.

And that is with a stock type piston.
If you go with 5,6,7 heads, have your shop put some 2 inch intake valves into them.
JMO
Jim