FS - 99 SOM Z/28 Head/Cam
1999 SOM Z/28 A4 – Very clean car despite the 107,XXX miles on it. I use it as my daily driver and it runs and drives great. The car was not originally SOM. It was painted by the previous owner at a Mercedes Benz dealer less than 2 years ago. In my opinion the paint is the best thing about the car. It really looks great. I have had it at the track but only 10 passes and the fastest it’s been is 12.50 on motor. That was before the heads were installed. I added Nitrous for a short time just to see what it would do and with a 150 shot it ran 11.50 and trapped 121 MPH also prior to heads. I only sprayed the car 5 times and then removed the nitrous. With the addition of the heads (which are stage II Patriots purchased here on LS1tech and only have 500 miles on them) the car should run low 12’s on motor. I have never had it on a dyno so I don’t have any #’s although it was tuned after the cam install. It’s a full weight car with only the spare tire removed.
List of mods:
863 Ported and Polished Heads flow 300 @ 600 lift (the heads were done by Patriot)
Texas Speed Torquer V.3 Camshaft - 231/234 .643"/.598" 111 LSA
Comp Cams Dual Valve Spring
Hardened Chromoly Pushrods
Built 4L60E with high performance clutches, Kevlar band and shift kit. Shifts perfectly.
Hypertech 160 Degree Thermostat
LS6 Intake
Coated long tube Pacesetters
MSD 8.5mm spark plug wires
3500 Stall Converter
Richmond 3.73 gears
Volant LID
3” Custom true duals with single chamber Flow Masters
Under drive pulley
Walbro 255 in tank fuel pump (installed less than 500 miles ago)
Front tires – 275/40 17” BFG’s brand new (less than 1K miles)
Rear tires – 315/35 17” plenty of good tread here as well. Only had them for a few months also.
When I bought the car it was stock and all work performed has been done professionally by a local shop. The only thing it really needs before heading back to the track (if that’s what you’re into) is a dyno tune. I haven’t had it tuned since the heads were installed. I’m sure there is a lot more power to be made with a good tune.
It is very loud. The cam hits really hard. I will have a sound clip up in a few days. I love this car and hate to see it go but I’m heading back to college and need something a little more economical. I would consider some partial trades for a gas sipper, make me some offers. I have no liens and title in hand…price was 10,000...Now $8,500.
Sound Clip...
http://www.youtube.com/watch?v=Zerjeri-HbY
List of mods:
863 Ported and Polished Heads flow 300 @ 600 lift (the heads were done by Patriot)
Texas Speed Torquer V.3 Camshaft - 231/234 .643"/.598" 111 LSA
Comp Cams Dual Valve Spring
Hardened Chromoly Pushrods
Built 4L60E with high performance clutches, Kevlar band and shift kit. Shifts perfectly.
Hypertech 160 Degree Thermostat
LS6 Intake
Coated long tube Pacesetters
MSD 8.5mm spark plug wires
3500 Stall Converter
Richmond 3.73 gears
Volant LID
3” Custom true duals with single chamber Flow Masters
Under drive pulley
Walbro 255 in tank fuel pump (installed less than 500 miles ago)
Front tires – 275/40 17” BFG’s brand new (less than 1K miles)
Rear tires – 315/35 17” plenty of good tread here as well. Only had them for a few months also.
When I bought the car it was stock and all work performed has been done professionally by a local shop. The only thing it really needs before heading back to the track (if that’s what you’re into) is a dyno tune. I haven’t had it tuned since the heads were installed. I’m sure there is a lot more power to be made with a good tune.
It is very loud. The cam hits really hard. I will have a sound clip up in a few days. I love this car and hate to see it go but I’m heading back to college and need something a little more economical. I would consider some partial trades for a gas sipper, make me some offers. I have no liens and title in hand…price was 10,000...Now $8,500.
Sound Clip...
http://www.youtube.com/watch?v=Zerjeri-HbY
Last edited by Fred O'Bannion; Jul 2, 2008 at 06:27 PM. Reason: Added idle clip





