Rebuilding the ol 300
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Postmaster
Joined: Aug 2003
Posts: 2,873
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From: St. Peter
Rebuilding the ol 300
I am thinking about pulling the engine out of my truck, (not cause it needs it, just has some leaky gaskets, and I want to add some more power. The truck is an 88 EFI, which i would like to keep EFI. I would like to add a new cam, and new pistions. i will have the head milled, and probably the block milled and bored over as well. What else can i do as far as performance modifications to this motor? I want to be reliable as heck, (as it is now).
I dont want to sacrifice driveability for power, nor do I want a check engine light. So I was wondering what people are using for parts, etc. What cams are common.
I also heard that 5.0 roller rockers can be used on this motor? any truth to that?
I like the torque that the motor has down low right now, and would like to keep that, or add to it. I am not really concerned with the high RPM range, however it would be nice to add to it if possible.
I dont want to sacrifice driveability for power, nor do I want a check engine light. So I was wondering what people are using for parts, etc. What cams are common.
I also heard that 5.0 roller rockers can be used on this motor? any truth to that?
I like the torque that the motor has down low right now, and would like to keep that, or add to it. I am not really concerned with the high RPM range, however it would be nice to add to it if possible.
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
There is not a lot you can do to modify a computer controlled EFI 300 without causing it to have a mental break down. There is more than enough info on this Forum about this very topic. Settle in for some serious reading and searching.
Post Fiend
Joined: Jan 2007
Posts: 7,021
Likes: 5
From: Almost Heaven
These guys must like you, Peter. 
When I made a thread like this asking for specific modifications I was flamed into a pile of ashes. And I see that you have 2K posts, so you're not new either. Ha ha.
When I made a thread like this asking for specific modifications I was flamed into a pile of ashes. And I see that you have 2K posts, so you're not new either. Ha ha.
Post Fiend
Joined: Jan 2007
Posts: 7,021
Likes: 5
From: Almost Heaven
