evo-offer

Hi. iīve tried searching but strangly i couldnīt find any answer. but is it worth the time and money to put in a lt1 engine instead of upgrade the 350 tpi? i saw on ebay that i could get a new 383 stroker block for nearly the same price as a used lt1 engine. the car will only go on the streets and maybe on track someday.

96capricemgr

HP is in the topend MUCH MUCH more so than increasing the displacement so don't think for a moment that putting a 383 under stockish TPI heads/intake is going to net you much in the way of a result.

I really don't know a lot about the TPI setups so I can't really say much on that side of it

quickchicken

heres a litle help...

Common LT1 Swap Questions And Answers - Third Generation F-Body Message Boards

in the sticky section of the engine forum there are a few other links on thirdgen.org.

evo-offer

thanks. i will check it up

Gtpguy

Not worth it for what you need it for. Lt1 isnt that much faster stock for stock. Ive owned both. Lt1 has a little better top end, but tpi has almost 30lbs more torque at the wheels. Torque is what you want on the street. Now that's if tpi and all its sensors are in good shape because they are temperamental beasts.

evo-offer

thanks for the info. then i have a little more to go on. sounds that itīs much better to keep the tpi. if iīll want a little mor power in it, what would be the best to start with?headers have i already conciderd.

Gtpguy

They arent cheap, but they are very well made, but get a set of dyno don headers. Long tubes and thirdgens dont mix since the Trans tunnel is so small. Dd headers are the best you can by and make really good power. After that, bump up the timing to 10*, maybe an adj fuel pressure regulator, 1.6 roller rockers, transgo shift kit STAY AWAY FROM B&M, a vette servo. All that plus a 3000 lock up stall and some drag radials should net you low 13s. But it will take off like a mid 12 second car. Tpi is fun.

evo-offer

sounds like a good start. is it worth to get a 383 stroker block? iīm gonna do a t56 swap.wich vette servo do you mean?

'92 RS Hybrid-Z28

Here: they are very well made, get a set of Dyno Don headers the only 1 3/4" primaries

quickchicken

might help to give some info on the pic you posted, i.e brand, PN, size and so on.

OneShoe50

May I suggest, if you are going to make a swap, do an LS swap. An easy 400 hp with stock parts.

Just sayin'

quickchicken

i agree with this. i had the option to buy a low mile, cheape LT1 setup and being the LT1 is a "bastard" motor and i was already geared towards a gen 1 setup it was easier for me to stay where i was. if your going as far as considering an LT1, go the extra 30% and do the LS.

one bad Z28

It depends on if you want to do all the work of a LT1 swap. The LT1 camaro is a full second faster at the track than a tpi camaro and gets better gas mileage. For more money you could do the LS1 swap also.