Selling my 2004 m6 pontiac gto. the car has American Racing 1 7/8ths primaries. Catless mid pipes, SLP LM1 catback, LS7 clutch and flywheel and RAM aftermarket slave cylinder. also Clasic Tube SS Braided Clutch line. It also has the 05 hood, comes with 17 and 18 inch wheels. The car has 26k miles on it. asking 16,000 obo. pm me for more info
Nice car. Curious why you went with the 1 7/8 headers over the 1 3/4 headers? Usually the 1 7/8 headers are for bigger cube engines. GLWS.
trades?
no
1 7/8’s are just as popular on 5.7L + as the 1 3/4.
Posted from JROD on ls1tech.com as to why 1 3/4 headers are, generally, better than the 1 7/8 headers on stock 346 engines. This is the info I"ve known about for a while. If you can show me info as to why the 1 7/8" headers are just as good, I’m always willing to learn.
“…I would agree with you that a good 1 7/8” header should make power over a poorly designed 1 3/4" header any day of the week. I happen to prefer a long primary tube for a street/strip 346 CID engine, especially in a combination that wants to place the emphasis on the street side of that equation (better low speed and midrange TQ and power, throttle response, fuel economy, etc.)
On a 383 the larger (but much shorter) tube is worth about 10 more peak HP and 12 or so past peak…it will also widen the peak numbers a bit (a good thing), but expect to lose about 20 ft/lbs at 4K or so. You can tune all you want to try to fix this hole, but you can’t fix it. Thats simply where the long smaller primary just overpowers the shorter larger primary…
As I said, what we have typically seen is that a larger header wont hurt top end power figures, but it will hurt the area under the curve and lower your “average” HP and TQ figures, and as stated slightly penalize you in the fuel economy department as well.
On a 346 this is 20 to as much as 30 lb ft of Tq. in my experience."
GLWS nice car…bigger pictures would be nicer
“No” haha jesus andrew, do u know who H82goslw is? Hes a OG buddy, had a nasty C5. That car is one of the reasons I got one!
+1 on tiny pictures.
Cosmos purple? I can’t even tell.
Too bad it wasnt a LS2, but is a nice car GLWS
Yes its cosmos purple. and sorry for the small pics ill try to get a few bigger ones up. and the headers are 1 7/8 because the car had a maggy charger on it but took it off when i bought it. the car is a blast to drive. also would consider trades let me know what you have
awesome fucking color.
ttt