4 replies to this topic

[pete]

I have a 1975 F100 Ranger XLT 2wd SWB originally had a 390 but now has a 429 out of an early 70s LTD it is bored .030 over.........I put new pushrods and rocker arms in it only to find out a valve is stuck(snapped pushrod in half) and I'm not sure if the heads have to be rebuilt or not but i'd rather get some boss 429 heads if they'll work?

[highboy73]

they will bolt on but to get the best out of them you would have to have a high rpm power range.Go get the efi and heads off a late 80's early 90's 460.
I'd make sure I checked what cc the heads were.wouldn't want to end up with a 15:1 comp. ratio.or a 6:1 either.

[pete]

EFI??

[highboy73]

electronic fuel injection.it's alot of work.best way is to have complete donor.

[pete]

yeah i know.........but why would i want to convert it over?