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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: bigbird90650 on February 04, 2012, 10:56:42 am

Title: 91 suburban engine - does it have manual fuel pump capability?
Post by: bigbird90650 on February 04, 2012, 10:56:42 am

Hi
I found a really cheap 91 Suburban 350 engine for sale. I'm going to take the fuel injection off of it and put a carb. Does a 91 350 block have the manual fuel pump place on the block? Do these engines have roller cams? It's a running engine complete for $225. Thanks for your help.

Title: Re: 91 suburban engine - does it have a roller cam and manual fuel pump capability?
Post by: jaredts on February 04, 2012, 11:19:12 am

I'm sure someone knows better than me, but I think it has a block off plate for the fuel pump but has no lobe on the cam to drive a fuel pump.  No big deal, just an electric pump and regulator fixes that.  I'm pretty sure its not roller anything.  Just hydraulic lifters, stamped rockers, and low flow (undesirable) heads.  I think you have to get to vortec era stuff for roller engines.

Title: Re: 91 suburban engine - does it have manual fuel pump capability?
Post by: bigbird90650 on February 04, 2012, 06:22:12 pm

So the place for a manual pump is there but I would have to replace the cam?

Title: Re: 91 suburban engine - does it have manual fuel pump capability?
Post by: Blazin on February 05, 2012, 10:00:21 am

Some engines had block off plates. Some were cast solid in the area. You need to look at it to see.