4.6L engine swap
05-10-2019, 03:52 PM
#12
Senior Member
Yes, you can swap the engine, it'll take a little knowhow on just what to swap. Just swap the block and heads from the 97, mount the PI intake and everything above to the 97 engine from the 04. Everything will be 04 other than the block and heads from the 97...everything. The 97 nonPI heads will run/match fine with a PI manifold from the from the 04. You have to do it this way for it to work. In the end you'll down a little on power, but not that much.
EDIT.... pic for reference..... maybe it will work out....
Last edited by white89gt; 05-10-2019 at 03:54 PM.
05-10-2019, 03:54 PM
#13
Senior Member
Yes, actually it will give that 97 more flo. Mustang guys have done the same in that regard. Mounting a PI mani on non PI heads and had better numbers. Only thing different are openings Teardrop vs rectangle. No gasket matching required. You run the PI gaskets.
Last edited by Jbrew; 05-10-2019 at 03:58 PM.
05-10-2019, 03:57 PM
#14
Senior Member
Ahhh, yeah.... I remember that now that you mention the Mustang stuff.... couple guys were doing that on their 96-98's in the Mustang club (NUMOA) back in the day (1999ish). Thanks Brew.
05-10-2019, 04:00 PM
#15
Senior Member
He could see if the 04 heads are good, that'll require more work and difficulty. Probably not worth doing IMO.
05-10-2019, 04:04 PM
#16
Senior Member
That would be a nice upgrade overall to slap the H/C/I off of the 04 onto the 97 block.
05-10-2019, 05:14 PM
#17
Senior Member
Thing about it, he wouldn't necessarily need a tune. However, a tuner with a correctly written custom tune would be worthwhile. Since that would not only adjust trans tables/shift points, there's compression and flow to take advantage of as well.
05-10-2019, 08:39 PM
#18
Senior Member
