Does anyone use jegs crate motors for basic 350? Want to put new 350 in 1990 rs with 330,000km on original 305 getting kind of tired

 

Are you looking at the low compression 350? I recently bought a L31r crate engine through a Chevrolet dealer that had them listed on eBay for a better price than jegs or summit.

 

I haven't got that far. I am looking for suggestions. My car is in good shape except for the hi km on engine. I don't want a power house that will rip the car apart. I used to have a 1964 short box step side chev with a 327. That would use to much fuel.
I want something with reasonable horse power and fuel economy. I am getting about 23 mpg right now

 

If you want a reliable engine with great gas mileage and aren't worried about more power then I would get the 305 rebuilt or buy the Vortec L30 305 from Jegs for less than 2k. The Vortec will only have a few differences mainly the intake but there are cheap ways around that and at 230HP its a big jump from what you had.

 

I want to get rid of the smog pump and all that garbage. Is it worth it keep it a TBI or is easier to just go to a carburetor. I like the tbi when it is running right.
Do many people rebuild a 305 most do a swap. The 305 with a few mods would have lots of hp I think.

 

Most people swap to a 350, you can get a vortec motor and run the TBI. How you do it depends on what emissions you have to pass in your home town. Personally if I were to buy a crate 5.7L motor I would buy a roller block vortec 350

 

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I have been down the 305 TBI to CARB road (by choice - no regrets )...everything I experienced is here including all p/ns etc https://www.thirdgen.org/forums/carb...s-305-tbi.html ...as far as modifying the 305 for "lots of hp" you kind of have your work cut out for you - 305s dont really lend themselves to "lots of hp" easily - although it can and is done here by a few ....my opinion after modding my 305 is go with a simple crate 350 for a myriad of reasons, $$ , reuse of parts down the road , dime a dozen parts, resale value etc....good luck.