How much horsepower can u expect if you get the LT4 conversion kit?

 

expect anywhere from 340-370rwhp

 

I dont think so, they advertise 325 hp. According to people here that is FWHP not RWHP, AND THEN people say that is still over estimating. I belive I was reading the 325 FWHP was rated from a magazine on an LT1 with headers and some type of $3000 motec computer. I COULD be wrong, anyone wanna chime in? :-D

 

odd. from what i read/understood there was an lt4 conversion kit that would take a stock lt1 from 275 HP up to 415 HP. you can do the math to put that 415 at the flywheel to the ground, but i'd hope it adds up to more than 325 HP.

i could be wrong... that's just what was printed.

- jay

 

It's not 325 at the flywheel. The kit advertised at all the sites list as 425 at the flywheel, and I do believe it has been proven. To get some more information on it, do a search on LT4 Conversion. 96 TA was on the dot with his estimate, those are the normal and high gains at the wheels. Hope that helps. Most people will say that it isn't worth the money, but if you plan on going all out, this is the way to go, but its just because the heads allow more flow, so for major modifications LT4 are very nice to use. Many different opinions. Correct me if I am wrong on anything.

-Eric

 

personally id go with ported heads and a different cam... should put you at 415-425 rwhp

 

I just got my 355 LT4 conversion in. After I break in the motor. I am gonna get it dynoed. So time will tell. I will keep all posted.

 

I just took delivery of a complete 4-bolt main LT4 out of a 96 GS Vette. With just a hotcam, I'm gonna see what it puts down, behind a '95Z/M6. I'll post when complete, which may be winter with all the xtras I gotta get.

I'm hoping in the 350-370rwhp range, but I'd be please with 350 or anything over. We'll see....

t/c

 

Go with ported heads and a cam.