Hi guys

Im thinking of doing a engine transplant in the future

But the cars drivetrain wont be able to handle much more than 400ft lb's of torque (at the fly) with out spending crazy money

But im wanting 500-550HP at the fly,

And would like it to rev high 7500rpm if possible

What combination would be best for this? if at all possible

Thanks

Alex

 

Regardless you're still going to need the drivetrain to handle the power and RPMs. What you're asking for isn't very feasible/reliable.

 

Its torque that kills drivetrain not HP

 

your going to have to go pretty short on the stroke. 3.25 or less.

 

If you are going to drag race then you are going to have to rev to the moon before launching which means you may exert the equivalent amount of devastating torque through the driveline than if you had average torque.
It's not necessarily any given amount of torque that kills parts. It's shock to the driveline.

 

It will be used to fast road/track

Where would I find a rotating kit for such a short stroke?

 

Put an L99 (4.3L V8 from 94-96 Caprice) crank in an LT1 block. It's been done before, but I don't know the details.
All I know is it can be done Cheap, knowing the guy that did it!
Stock parts, but you'd want a blueprint rebuild for the way you want to use it.

 

dont mean to rain on your parade here but what you are proposing is very unlogical...........make the car right to handle the power then handle the power plant........i can 100% guarantee issues with the road you are trying to take........do it the right way...........it will be cheaper to run a properly designed mid level engine and spend the rest of your money on the driveline than spend all you money on high dollar parts to rev the car high for no reason at all.......

also stoke/bore does dictate torque/hp but its less than 50% the factor......top end design and camshaft selection will dictate the way the motor makes power.........

 

The guy Pat is referring to used my old L99 crank and the L99 rods with LT1 pistons, the L99 rods are something like 5.94 so the L99 had the same height piston as an LT1 and used a longer rod to get the piston near the deck. I probably wouldn't trust stock L99 rods at those rpms though, might work, but finding out it didn't would be expensive.

 

I had another thought here, if the drivetrain is that fragile the car may not like LT1 weight suspension and handling wise.
Why not try a aluminum 5.3l the OEM computer can then handle your rpm goal which the LT1 one can not.

 

Vtak brah

 

You wont spend extra to beef up your drivetrain, but you'll spend it on aftermarket ignition?? Seems bass aackwards to me.

 

Torque gets you turd moving... What a retarded waste of space this thread will be..

 

have any of you idiots figured out the fact that maybe the word "transplant" may have bearing on the availability of parts to beef of the drive train.

 

Seems to me you are looking to swap in the wrong engine. Look at swapping in a turbo Honda motor instead. They are all torqueless wonders that rev to the moon.

 

I beg to differ with you but, it's shock loading that kills drive lines. Lets say you are turning 7,000 RPM and you smack second gear, what do you think is going on downstream from the transmission as the RPM comes down?

Don't start another torque/horsepower war, PLEASE. It's all horsepower! (Gasp, did I really say that!) Three big fat guys sitting on a couch exert more pounds of torque than your engine and no horsepower

Al 95 Z28

 

used crank and rods from a cup motor and custom pistons. will also need the correct bearings/spacers to use the small journal crank in the large journal block. and misc. other things.....

 

Ding ding bingo! lol

 

Blah blah blah, torque, horsepower, etc etc etc. You NEED them both to move. You can compensate one for the other in your builds but why would you focus on that aspect? Just build it reliably to do what you want. You want to hit the track, start in the suspension and driveline. You wanna go fast down the strip, make torque/power blah blah whatever you want to call it. Simple as that. Buy some suspension, buy some bolt ons, buy some gears, and forget revving to 9k in an lt1 without BOOKOO cash.

 

I love saying this...

Cheap Fast Reliable

Pick two.