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I had call Tony Morana & he's saying that the '98 Ranger 4.0 OHV should be able to go 40 over, you had mentioned 30 over was the max. Just trying to get a better understanding with the boring limits.

What would be the max boring recommendation for a '98 Ranger 4.0L OHV Rebuild. Tony Morana says you can go 40 over but I've heard for a daily driver, you shouldn't go more the 30 over. The plan is to move up to 10:1 with custom made forged pistons. Just being safe...

what can you safely bore a '98 ranger 4.0L OHV to?

Are there forged pistons available for a 98 4.0L ranger

How to Improve '98 Ranger rear sway handling issue after 2 " drop?

Those monitoring aspects like air intake temp are great, but wouldn't I still need to get a programmer for tweaking the pcm to take advantage of the compression change to 10:1 with the 422 comps cam, bbk throttle, heads ported & polish with expanded exhaust ports, jba shorty headers, upper &...

It's an older Street Smart Design with a carbon fiber shield box, air comes in from underneath, but it isn't totally sealed

That make sense Dirtman, i do get your point, thanks Mines an old street smart design which has a carbon fiber heat shield around it, it pulls air from the bottom of that. With raising my compression to 10:1, the 422 cam, BBK throttle body, shorty headers, head ported & polished with exhaust...

My Ranger is a 1998 4.0L OHV, 5-Start just does 2001 & up unfortunately

Did you have to send your PCM to them, what other MODs did you do, how much HP increase did you get & how much did it cost ?

Any one have a recommendation on a programmer for max performance?

Any tips or notes on how to use the ford pcm software?

Does anyone have any '98 4.0L OHV Programer Recommendations for max performance ?

Did you also use a programmer after installing the SOHC MAF ?

mines a '98 4.0 OHV

I had found one on EBay for my '98 4.0 OHV

Does anyone have any input concerning a throttle body spacer for a 4.0 OHV?

I have the OHV 4/0

Everyone has an opinion, so what I do is to ask the questions & then test & evaluate for myself. Actual testing & results, are reality. But in this case, I would agree that it depends on the application of stock vs what your actually testing with. Here's an interesting read Performance CAI...

A cold air induction system could help, test pipes :) where your CATs are, a change in tire size & possibly a little more air pressure in the front tires could all help. And oh yeah, non-ethanol fuel by itself helped about a mile a gallon for my 98 4.0 ohv ranger