Trans bolt patterns, 4.2V6 vs. 4.6V8, 5.4V8?

[Earl43P]

Buddy has a 97 F150, bad 4.2 (still running, hunting beater)
wants to throw a V8 in it (4WD, auto trans).

I need to know if his 4.2 V6 tranny will bolt to either of these V8s.
He won't do it if he has to replace this trans.
Flexplate, starter advice is welcome too.

I'm off to search Biggaytruckland.com for answers....

 

[exbass94]

4.2 has the same bolt pattern as the 5.0. 4.6 and 5.4 is a different pattern from 4.2.

 

[Earl43P]

Guess he's going with Plan B then (head gaskets).

Appreciate the reply!

I also found this gem: http://www.v6f150.com/forums/showthread.php?t=13784 excerpt pasted below.

"Later Windsor V8 pattern
Note: this is commonly called the Ford Small-block V8 pattern (SBF), though it is used in some "big block"-sized V8's as well as some V6's and I6's.

200 I6 1980-1983 only, partial (4 of 6 bolts) pattern.
250 I6
255 V8
289 V8 - (made after August 3, 1964) - had 6 bolts holding bellhousing to block
302 V8 including Boss 302
302 Cleveland (Australia)
351 Cleveland V8 (not the 351 Cleveland M-block engine)
351 Boss
351 Cobra Jet
351 Windsor V8
400 Cleveland M-block V8 aka 400FMX (certain 1973 casting numbers D1AE and D3AE, mated to the FMX transmission)
3.8/3.9/4.2L Canadian Essex 90? V6 (RWD only) 240 I6
300 I6
4.6L Modular V8 (first two casting runs, numbers F1AE and F2VE)
5.0L V8"