im lookin into buying a LS1 Z28 but its a '98. ive been told to stay away from '98s because of certain failures. anybody know what goes wrong with 98 LS1s or 98 Fbodys in general? does it just apply for only 98 model year cars or after?
__________________ Just a mostly stock, daily driver...for now
Originally Posted by UofMN
Bottom line, a CHEAP drag car, that guzzles gas ferociously and is completly un-streetable. Also it must be obnoxiously loud, I mean like makes small children cry LOUD.
I have a 98 a4 with 75k miles on it. runs like a brand new car. no lie. The automatic tranny is still very very strong, will bark second gear sometimes and just glides. no overheating, no sagging shocks(yet), no broken window motors, no a/c problems, nothing. i love my car. the pervious owner was a younger guy but took very nice care of everything and before that it was ownder by an old lady. i might be lucky though, this is just my experience.
__________________ "Jesus rose from the dead a few years ago and came back as the LS1. He is with many of us today."
Gone but not forgotten '98 Z28 Camaro A4 |SLP Loudmouth catback|SLP Lid|Chrome SS 10 spokes|275 nitto dr's|
13.47@103 on bald *** falkens
01 Z28 Camaro M6 |hooker catback|whisper lid|
times coming soon.
All I can remember is that there was a recall on some 98s for cylinder head problems or something regarding the engine internals. Mine was one of those cars but i didn't have to deal with it, the original owner did.
Other than that, in stock or modded form they should hold up just as well as newer f-bodys. There have been some upgrades in certain parts (t-stat, computer, tb, heads, intake, etc.) These are upgrades that were due to advancement not to complaints from owners. If I had a choice between a 98 and a newer car of course I would pick the newer car, given that it is the same condition. If you come across a nicely modded 98 for a decent price don't shy away from it.
98's have a harder time in the tuning department due to analog signal
98 blocks have a thinner sleeves and a pass thru vent between the cyls. this doesnt mean the block is weaker it just means if something happenen you might have to buy a new block or have it resleeved and have the vent cut in by a company like RACE ENGINE DEVELOPEMENT
97-98 heads are slightly different, valve cover bolts
98's have 28 lbs injectors 99-00 went to 26 then back to 28 in 01-02
98 have a working temp gauge unlike the other years which are dummy gauges
The piston slap issue plagued all ls1's until the pcv system was redesigned and the ls6 pcv system was used. It is commom practice now if you havent updated to the ls6 pcv system is to add a catch can inbetween the VC and the TB to catch the access oil before entering the intake causing the knocking sound on start up.
99-00 have the oil pumps issues
all of this can be researched here using the search feature
I have added a SLP lid, B&M Trans Cooler and a Hooker Catback system. My particular LS1 has no piston slap and the valvtrain is fairly quiet with the normal rocker "tick". I spin it up to ~6000rpm atleast twice a week and it has been down the track 10 times.
__________________ ~Jordan 05 Quicksilver Metallic GTO LS2 A4-Stock for now.
I have over 100,000 miles on my car and the only major thing that went wrong was trashing the transmission when the car was stock, which has no relation to being a 98...the 4l60e is just a weak tranny. Ive never had a problem with piston slap, never burn oil, oil pressure is awesome, etc. The only things that have went bad were the window motors, headlight gears, etc which is also very common on any ls1. Since the tranny gave out I have added everything in my sig. If I wasn't confident in my 98, I sure as hell wouldn't be spraying with 100k miles on the engine.
The major downfall to the 98s is the PCM. It becomes difficult to tune once certain power levels are reached, usually related to forced induction. Its not impossible though.
RIP 1998 Pontiac Trans Am l Pacesetter Lt's l TSP Duals l 3600 stall l HSW Dry Nitrous