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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 87 Chev Silverado on August 23, 2006, 01:11:00 pm

Title: 305 to 350
Post by: 87 Chev Silverado on August 23, 2006, 01:11:00 pm

I am switching a 350 in and taking my 305 out. Is all that needs to be switched out in the computer PROM??

Title: 305 to 350
Post by: 87 Chev Silverado on August 23, 2006, 01:01:00 pm

I forgot to mention, this is on a 1/2 ton, 1987

Title: Re: 305 to 350
Post by: 123 pugsy on August 25, 2006, 06:12:00 am

The only difference I know about between the two engines is the exhaust manifold bolt hole at rear of pass. side.

Don't know about this on Chevy trucks though.

Title: Re: 305 to 350
Post by: VileZambonie on August 26, 2006, 05:52:00 pm

Yes replace the prom. The injectors are the same as is most everything else!