Please put me in the right direction!! I have a 93 lt1 vette and a conundruim...Should I throw heads and a cam on the lt1 or pick up a 383 stroker making 385 hp. The lt1 is stock at 300hp with 49k...I need to know whats gonna be the way to go!! thanks.

 

if you are willing to pay for it get yourself a good $1000 set of heads with 550+ lift limit and get them ported polished then get yourself a good 500ish lift and 270ish duration cam and youl be throughin out way more than 385hp but you may also need to tune your computer if your idle is to speratic

 

Yep, a great cam and matched heads with excellent airflow quality will put out more than 400 hp on a n/a 350. Check out Advanced Induction's website. They do awesome stuff with stock short block LT1s.

If you do a 383...use aluminum heads and at least 11.5:1 compression.

 

thanks guys. i have been in touch with Ai. I have heard that the heads and cam are the way to go as that was my first way of beefing up my vette, but then someone told me that the push rods bend and bottom ends on the lt1 are not very good for 400 -430hp...any insight on that rumor??

 

as long as you dont do things like droping the clutch and redlining it lick a freeking syco you should be fine. just be gentle tis a two bolt main

 

You could also do what I am doing to my 383 LT1 and stud or strap the main caps, for some piece of mind--cheaper than machining the block for 4 bolt caps and plenty strong.

 

well, im gonna get the 383 with ported and polished lt1 heads, camshaft at 224/230@.50 and lift of .540 and dished 10.5 to 1 pistons. What you guys think that will crank out?!?!

 

Go higher on your compression, unless you're gonna turbo it. You can safely run 12:1 compression on those reverse cooled aluminum heads, on pump premium gas, and this will increase your power. I mean if you're gonna build the darn thing, you might as well squeeze the power out of it.

Go with forged Mahle Power Pak -5cc flat tops or SRP pro -5cc flat tops, for 6" rods (I wouldn't put 5.7's in a 383 stroker, but that's me).

Then, depending on what cam you use and what you do to the heads, your headers/exhaust, your tranny, and depending on your elevation, you're looking at 450-530 hp or more. More importantly is building the engine and the rest of the drivetrain with the correct matching components to give you "useable" power, right where you want it when you push that darn gas pedal.

Also, for even more precise compression, you can get the block decked. AI will tell you how far down to go on the deck, based on the heads you send them (unless you want to pay the $600 core charge that AI charges), then just have the machinework done. It'll probably cost you around $250 to get it decked. This is what I am doing with my block, as we speak.

I'd use at least a 234 duration cam in that 383 and some 3.73's in the rear. Driveability will not suffer too much, and you'll have more oomph.

I learned a lot over the past three years, since I became a Chevy guy, and I also learned a lot from the guys at AI, and they know what they're doing over there.

It seems that all the cars running the strips from AI do very well, even on mail order tunes, on the first try.

Here is my swap thread https://www.thirdgen.org/forums/ltx-...ver-v-8-a.html, in case you're interested in it. I have a feeling you may pass me up, but no biggy, it'll get done some day. It'd be cool if you did a thread on your swap, too.