Dano Moparo

I think Hot Rod mag. put that list together. Always seems to bring up the debate on Sports Car/Muscle car. Vettes, vipers and Cobras don't belong. Not only were tires crap back then, but most of those cars were still using dual point distibutors.

74javelin

thanks

they dropped the compression from 10.2 to 1, too 8.25 to 1 in late 71. they went from a 51cc head to a 58cc head. but they put on new style heads that flowed better in 1970 they also raised the decks height and changed the stroke to make the 343 a 360 and the 390 a 401 in 1970. all 343,360,390,401's came with 2.02 intake valves and 1.65 exhaust valves. all 390's and 401's came with forged rods and crank.

the 1970 and up heads are really nice. i've got a friend that's pulling high 9's/low 10's n/a in a 3400lbs car with 401 with ported stock heads. i've also seen video of a guy on the amc forum run low/mid 9's n/a 401 with stock ported heads in a amx/javelin like my car. i'd guess it weighs 31-3300 with out the driver. the stock heads are that good

i would guess with the better heads and a few more cubes would make up for the power loss from the compression drop.

some cars had the smog stuff and some didn't. mine didn't and it came stock 360 4bbl with duel exhaust. i have a friend and his 73 amx has smog junk. from what i've read it depends on what state the car came from.


hey, you may be right. there was a egr port on my stock intake. dam i wrote all this for nothing. o-well i'm posting it anyways well atleast the other javelin is a 1971

PS i just read that gm started using egr system in 1972.

Flastangs

some companies didnt make much or a performace car after 71 others did...74 Trans Am 455 SD comes to mind...still fast that year.

Flastangs

GN's were not very fast stock. I raced plenty of "stock" ones when they were new and they ran high 13's to low 14's. GNX's were faster. IF you modded a GN then they were fast.