I had a 1997 GTLTS4 frame that I put together using parts from a 1997 GT LTS5. The geometry on the bike from what I can tell is the same except that one is aluminum and the other Cromo. I used the forks off the LTS5 (RST381m) which isn't a great fork but is still servicable. I noticed at slow speeds the front tire felt like it would want to tuck in on slow speed turns on the street. Looking at some specs I found online it appears the only real difference is the fork rake. The LTS4 is 1.6" and the LTS5 is 1.5". Headtube on both and is 70 degrees and the seattube is at 74. The original fork for the LTS4 was a RS IndyC.

Am I correct in assuming that the headtube and the seattube angle are frame specific and do not take into consideration the forks? Would the difference in the Fork rake be attributed to the travel of the forks for which I have no specs on? Wouldn't using all the LTS5 components on the LTS4 in essence makes the bike ride and handle as a LTS5 would except for it being made out of aluminum?

If needed I found the specs for each bike here.

LTS 5

LTS 4

Thanks for any input