91 non roller 5.8 to 94-95 roller 5.8 swap ?
03-26-2018, 07:12 PM
#1
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91 non roller 5.8 to 94-95 roller 5.8 swap ?
Can I go from a 91 5.8 non roller engine speed density to a 94-95 5.8 roller engine speed density?
Without having to convert to maf ? I think the cams are Different in lift and duration ?
When did ford go to MAF on the 5.8 trucks ?
Can I convert to MAF or MASS by using another trucks harness ?
Thanks
Without having to convert to maf ? I think the cams are Different in lift and duration ?
When did ford go to MAF on the 5.8 trucks ?
Can I convert to MAF or MASS by using another trucks harness ?
Thanks
04-16-2018, 08:11 PM
#2
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The short answer to each question is probably yes, it depends on what transmissionyou plan to use.
5.8 trucks didn't really get a widespread maf up grade, and finding a 5.8 truck computer that is tuneable with e4od controls is kind of a unicorn, only place to find one afaik are certain govt/cali emissions 95 models. People speculate that a stock 5.0l maf computer will run a stock 5.8 without too many issues, but make too radical a cam swap (lift, lobe separation), or start adding in other bolt ons and you're looking at injector upgrades and a full tune.
If you plan on just using the stock roller cam out of a 94-97 5.8l then you should be fine on speed density, but I would try to get the computer/harness associated with the engine as well, to compensate for any sensor configuration changes.
5.8 trucks didn't really get a widespread maf up grade, and finding a 5.8 truck computer that is tuneable with e4od controls is kind of a unicorn, only place to find one afaik are certain govt/cali emissions 95 models. People speculate that a stock 5.0l maf computer will run a stock 5.8 without too many issues, but make too radical a cam swap (lift, lobe separation), or start adding in other bolt ons and you're looking at injector upgrades and a full tune.
If you plan on just using the stock roller cam out of a 94-97 5.8l then you should be fine on speed density, but I would try to get the computer/harness associated with the engine as well, to compensate for any sensor configuration changes.
04-16-2018, 10:12 PM
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The easiest way to convert is to keep the original harness with the engine, and lay them into your truck. But I don't think you'll see enough real improvement to justify the effort. With normal maintenance, a stock or direct-replacement engine will run about as well as any "tuned" replacement. If you want a noticeable change, change to a modern engine. Even a 4.6L would be a big improvement, in every way that matters.