I was wondering where you guys think I stand as far as numbers go, for what I already have done to the car. It's an lo3 bored 30 over 3 angle valve job surface milled completely remanufactured. Mild cam 203/450, Now carbureted 600 holley vac sec 4160c, and an edelbrock 2104 performer intake. HEI vac adv dizzy, I also have a 10" 2500 stall converter and a transgo shift kit.Flowmaster 40 series muffler and cat delete.

 

Maybe 180 HP with the cam and muffler. The rest didn't do anything to improve power.

 

Guesses are completely useless and usually lead to hurt feelings when someone gives a low estimate (sometimes correctly) and the owner is over estimating the potential of his parts.

The only REAL solution is to take your car to a dyno, and then you'll know.

 

Yeah, I guess I have to get it to a dyno. 180 is all? ya think even with the block being bored over and everything?

 

what that extra 4 cubes? maybe 4-5HP

you either have to spend alot of hard earnd money or get a 4in. bore kit if you want to play with the 350s

 

I do have a pair of lt1 heads(cast iron), but there is only one intake option to go with that I know of if I do that.I guess if that's the only thing that I have to worry about, it might be worth it. The heads are already assembled, so there would be no expense other than doing the necessary head alterations.

 

http://www.virtualengine2000.com/Vir...ulatorTour.htm

 

cam sounds somewhat stock but probly better than a p-nut cam. most 305's with the stronger L98 cam 207/213 415/430" will make near 200whp..advertised 220-230hp depending on year.

i'm gonna say the 450 lift makes a big difference over stock and so is that performer intake. TPI doesnt flow alot but carbs tend to flow alot more even with basic manifolds. but for a 305 i'm not sure the TPI is that much of a handicap. i think with teh cam and valve job you stand a chance of picking up 15-20whp or so and probly puts you at near 200whp..just my guess

 

That's more along the lines that I was thinking, and maybe if I go ahead with the lt1 head swap my cam options will open up and it should be a bit more respectible.

 

Do you mean LT-1 (2nd Gen 1970) heads or LT1 (4th Gen).

LT1 (4th Gen) are reverse flow and won't work on a Gen 1 block.

LT-1 (2nd Gen) have large chambers designed to be used with pop-up pistons and will greatly reduce compression. Also, double check the valve size to make sure they don't have 2.02/1.60.

Aluminum Vette L98 heads (113) are a better choice for a 305, especially if you do a little porting to those heads. And there is a newer design whcih I just heard about (so I cannot confirm for sure). They are off the ZZ4 (463) casting. They are suppose to have better intake flow than the 113s (unported).

 

i havent heard about the flow number differences, but the ZZ4 heads are machined to fit larger springs and higher lifts than the 113's. so that is a nice bonus

 

The heads are from a 94 corvette, and I Know you can use them by plugging the water jackets and getting them decked.