Thread: Serious Performance Nuts Help!!

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As the other guys have already stated, anything can done, if you throw enough $$$ at it. If I understood you correctly, you have a grand to get started with... this should buy a set of blower pistons, rings & wrist pins. If you want a BIG horsepower engine that is a reliable pump gas street driver & are on a budget, a 305 is not the way to go.

Big inches and torque is normally a lot cheaper than mouse motors with a lot of horsepower..........JMO

i dont exactly want BIG torque and hp...i just want stout, grunt, GRRRRR!

im not looking to make a 500 hp motor... I want a mouse motor that says ROAR!!! not BOW TO ME I AM GOING TO RIP YOU IN 1/2!



anyways, id like to bore it do whatever i need to it to make it a low 300 hp engine...I know this is possible because there are TONS of builds for 300 hp 305's...That is what i NEED right now and then later i can do something else... Later i can add the artificial aspiration to it. or rebuild the 305 and spend a little money on it to make it into a 300 hp motor and then let my money accumulate over the next year or so and drop a big block into it and buy something else to drive everyday.

now that being said, anyone have any good ideas for a 300-350 hp 305?

Ok this is not what your going to want to hear (don't mind me I have a tendency to do that ). $1000 isn't going to go very far period.

First thing is to check the condition of the parts you have. If the crank can get by with polishing, the cylinders aren't worn or tapered to the point where the block needs bored you might get it done for a grand. Check your prices locally, but here's about what your realistically going to find. Your heads are going to need guides and a valve job, the block will need to be vated and new cam bearing installed. The block deck and heads need to be checked for warpage and milled as necessary. The rods should be check and will likely need to be resized. Now buy a quality overhaul kit, add in the timing chain, new oil pump, sealers, assembly lube and fluids and you might have just enough left over for a cam and lifters. When all is said and done you have a pretty stock overhauled 305.

If your looking for the best bang for the buck, check the various dealers in your area (you'll likely find the prices do vary) on a 350 crate motor; just the plain bread and butter 350 2 bolt main version. Yes you'll have to add a little bit to your $1000 budget, but bottom line there is no replacement for displacement. At this point you will be starting with a NEW motor with a warranty that will make more power in stock form than your 305 can ever hope to do without spending 2 to 3 times your $1000 budget.

It comes down to economics at this point, yes you can build a 305 to some impressive levels if you want to and have deep enough pockets, but the bigger and better you start with the better off your going to be.

I dunno...I refuse to drop a 350 in...its just too common and i don't like it.

Now a special 350 i might go for...a trick like 350 block and stuff but put something special in that sets it apart from the 350's...

I'm still curious as to how a 350 with 305 heads, 305 computer with a little bigger injector would work out...Like put a 350 in using 305 heads, holley's 5.7L TBI and the 305 computer...

Since a 305 and a 350 are the same appearing on the outside, why not use a 350? The 305 has inferior heads, a wimpy crank, etc.....not ideal performance. If you want a smaller motor, build a 302 or a 327 (late model mains)......

I had an 85 K10 that came with a 305 4bbl. I tried all the crap with a cam, etc. Then, I put a 350 in it.....completely different truck. Much more fun to drive and it got better mileage. The thing was a 4 speed.

The only reason to use a 305 is because you have one. However, be reasonable....the only $$ you save are the block, crank, and head cores if you have to buy new pistons, etc.

Not many points earned from your friends by telling them "it's a 305!"

i understand that im not going to make a ton of power off of a 305, i just really don't want to be like everyone else saying "i got the 350..."

its just not any fun to be the same as the rest of the crowd...

I'm thinkin about selling my silverado anyways in favor of an s10...put a v8 in an s10...that would be a load of fun...or i might go for a car instead, if i don't have a full size truck then there is no point in me having a truck...Maybe a nice 3rd gen camaro with a 350 TBI in it or something. If i build the 350 with the $1000 that i have, then sold my truck, bought a shell (because shell cars are cheaper than cars with a powertrain in them already), dropped the engine into it...

only talking about 2 weeks worth of down time in the process so it probably would work.

ok i get it now...I'm trading my truck in for a new project...

For $2000 I got an almost rust free 1972 el camino with a 350/350 combo

it has a 12 bolt rear end, all the glass is good, the interior is in need of help (seat and door panels). The headliner is good, and the dash is fair.

The th350 is brand new, just rebuilt with 15 miles on it (just enough to make sure it shifts well and stuff) and the 350 ci engine is in great condition...the only problem i have with it is that it is fueled by a "quadrajunk" but thats easily replaced with a 600 cfm (or so) demon carb...

What do you guys think?