1988 Cougar LS 5.0 For Sale September 26, 2025, 11:59:34 AM I am selling a 1988 Cougar LS 5.0 with 65K original miles, is the Cinnabar color outside and inside with the digital dash, and has been in the family since it was bought. I have put in almost $9K in the mechanicals about 4 years ago to include an HO cam. The car sat for about 5 years in it's life and I went through the entire car from seals, exhaust/cats, fuel lines, gaskets, shocks, and too many other things to list when the cam was put in 4 years ago.The only issue is that due to everything in the motor being original, the engine does not run as smooth as it should with the HO cam, and if I did it over, I would not have changed it. I think it needs some additional engine upgrades to run better and get the most from the cam. The car will had a rough idle, and can stall at times when shifting into reverse, or from reverse to drive.The car is located in Williamsport, PA and am asking $6K for the car, and I have a majority of all the service records since 1988. Quote Selected
Re: 1988 Cougar LS 5.0 For Sale Reply #1 – September 26, 2025, 02:17:22 PM That is a super beautiful car...outstanding. Good luck with the sale.The HO cam requires 19 lb/hr injectors, the HO firing order (1-3-7-2-6-5-4-8), and a computer swap to at least a 1987-88 Mustang HO automatic ECU in order for it to run correctly. Just FYI. Quote Selected
Re: 1988 Cougar LS 5.0 For Sale Reply #2 – September 27, 2025, 05:46:26 PM Thanks for the feedback and comments! I do know the firing order is correct, is there any preferred manufacturer or kind of 19 LB injectors to install? Quote Selected
Re: 1988 Cougar LS 5.0 For Sale Reply #3 – September 28, 2025, 01:39:37 AM The ECU upgrade is required to change the injector firing sequence to match the new ignition firing order. Quote Selected