I have a friend with an NA LS/VTEC that will switch trannies with my flat out. I have a turbo Civic Si with forged rods and pistons. Is there any advantages to running the LS tranny pushing about 10 psi on the street or should I keep the stock Si Tranny? If I should switch, what should I look for to make sure its in good condition?

Thanks,
Craig

 

You should not switch...

 

si tranny owns

 

N/A Ls/vtec with LS tranny----sucks for him

Keep the SI tranny

 

I thought that the ls tranny was one of the best tranny to use for boosted cars.

 

The only way the ls tranny will help is if you have a small turbo. I get full boost on my t3/t4 around 5200. If i put an ls tranny there, it would take for ever to hit full boost. Just keep your tranny.

 

i would go for ls with LSD! i have on and its good for turbo

 

if you do alot of highway racing then go for it...that's the only advantage. if you're strictly a 1/4 mile racer then stay with the b16. if it was me, i'll keep the b16

 

So if i want to go for 1/4 racing than switch to si. I really need a new tranny. gsr tranny is messed up.

 

Keep the SI tranny. The nice thing about the Si tranny is if you want longer gear ratios..you can just get a larger tire (ie slicks). (Its a little harder the other way around)

liam