I'm not sure why there would be very few mods for this.Originally posted by 98700xcBB
[br]theres not a whole lot fot the 488-500's need bigger motor ie 600 thats what i was told by my parts shop when I had my indy 5
Originally posted by chadd
[br]There probably were mods out there, but they just aren't around much any more. I have seen them ported, heads shaved, and twin pipes but that is about it. Tell you the truth though, my dad's has a shaved head, and trying to get the thing running properly is a pain. It never ran great when we bought it, and it still isn't perfect. I think the mods had a big effect on the longetivity of these motors and you only got small gains. My dad's 91 with the shaved head and over 135 psi compression still can't outrun my stock 1996 Indy 500. Mine is lugging around an extra 20 lbs of suspension, and has less weight transfer at take off. He can pull me at low end but then I reel him in at the 1/8 mi. mark and we stay about even until the 1/4 mile. I don't know what the previous owner did to the head though either.