Well my 4.2 must be different to yours,mine goes better than my old atmos and is great on the open road with the 2.78 diff but still boogies when you floor it.

i was always under the assumption that the commodore cup boys all ran 253 and there all making around the 300-400hp mark. In fact i just checked and they are running 253 and i bet that quite a few of them would blow most street 308 away. Dunno how streetable one is but it show that there is power to be had out of them.

Quote: Originally Posted by NTMID 8 i was always under the assumption that the commodore cup boys all ran 253 and there all making around the 300-400hp mark. In fact i just checked and they are running 253 and i bet that quite a few of them would blow most street 308 away. Dunno how streetable one is but it show that there is power to be had out of them. thats true, they're fairly basic mods too, yella terra heads, holley 465 i think, edelbrock performer.... tho do the same mods to a 308 and u make far more power and torque.. for the same money, and its not like you're saving any weight with the 253.. it has no advantages, people bash it for a good reason Some original photos have not been recovered yet.

300HP is 300HP and dont they sound good,there should be more coverage on the Commodore Cup,they are starting to use VR bodies for some reason.I see them on Speedweek sometimes,good racing.

iv got a 253 in my work tonner(hq) and it goes ok, but i will be putting a rb30 in it eventually. lol my mate has a 253 in his vb comm, spent a sh$t load on it! but it keeps up with my stock walky! its been to the nats a few times,EVL253, black with a huge drop tank! thats not bad for a dime a dozen 253 lol

Quote: Originally Posted by walky509 iv got a 253 in my work tonner(hq) and it goes ok, but i will be putting a rb30 in it eventually. lol my mate has a 253 in his vb comm, spent a sh$t load on it! but it keeps up with my stock walky! its been to the nats a few times,EVL253, black with a huge drop tank! thats not bad for a dime a dozen 253 lol i know if i spent a ****load on a motor just to keep up with a 180kw injected 5litre id be sucidical!

He might have had fun doing it and he didn,t have to change engines.

I've seen 202's with over 300hp, anythings possible if you spend the cash and wasting money on a 253 just isn't logical when you can get more power from a 308 and spend the same money.

my first car was a 253 in a hz ute, (might explain my username.) it had a holly 350 and with a gtech pro thing it was apparently good for a 17.5 1/4 mile. so yeah they really are a slow car and unless there is a specific reason you want one i wouldn't bother. maybe get the vk and convert it. 120kw's of fury it was if i remember correctly. when it was new anyway

Quote: Originally Posted by Magnum06 Most people put in 253's because theyre so cheap. Theres no real way to achieve much power from a 253. Most 4-cylinder cars would flog one and i'm sure the old 202 would eat one as well. Best to buy a 308 model and give it a rebuild. haha lol. 308's are great. but.... a 202 DOES NOT eat a 253 LOL!

I'm just waiting for someome to turbo one! There is a guy on the street commodores forum with the tuffest one I've ever seen. His name is Wagone. If I remember right it makes in the vicinity of 460hp! Pretty impressive for a 253!!

wat do ya think a turbo 253 would go like?? and how would it hold with a gt40 and about 8psi pumped into her, intercooled and blow-thru carby set-up? wuld it last?? check this out twinturbo 253 7psi boost 2 rx7 turbos http://youtube.com/watch?v=l8n7A9-kZ0Y

Quote: Originally Posted by lildoser wat do ya think a turbo 253 would go like?? and how would it hold with a gt40 and about 8psi pumped into her, intercooled and blow-thru carby set-up? wuld it last?? check this out twinturbo 253 7psi boost 2 rx7 turbos http://youtube.com/watch?v=l8n7A9-kZ0Y i reckon u could make one go awesome... would be strong too and run cooler than the 308 which has thinner walls, itd be a good base for cooling but again.. the cost would be the same so if u turbo a 253 then u can turbo a 308 and the 308 is going to blow the 253 out of the water for the SAME cost so why would u choose a slower less performing option.

Because that could be the motor you have in your VH and you run what you have,its still a 4000cc donk.

make sure its got racepowa......

Quote: haha lol. 308's are great. but.... a 202 DOES NOT eat a 253 LOL! Thats pretty funny, I had that argument with a mate and proved that a 202 in the exact same car was faster, actually back then I had the 173 in my car and still bet it. Just face it, they are a lazy old engine, no torque, they make 120kw when new so a VN would kill one. But hey you can always do doughnuts on wet grass and make lots of noise.

Quote: Originally Posted by Boyracer Because that could be the motor you have in your VH and you run what you have,its still a 4000cc donk. well you'd be stupid to do this either way on a stock motor.. which means u gotta rip it out, and why u would spend around a grand machning a 253 block when u can get a 308 cheap from a wreckers and do the same makes no sense to me!

Cause the 253 you know is better than just grabbing a cheapy 308 from the wrecker you nothing about.

Quote: Originally Posted by Boyracer Cause the 253 you know is better than just grabbing a cheapy 308 from the wrecker you nothing about. you're gonna machine it either way so the once the block is back its gonna be better than new!

I see both sides to the argument but . . . Why build a 253? Well some people just have to be different! You know as well as I do that a boosted 253 will go better than most N/A 308's out there. So that's another reason to. It would be interesting to see how a completely standard one would go with just a well sized turbo kit and some heavier valve springs!