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Author Topic:   Need More Power From 305
Dirt Roller

Total posts: 14
posted January 28, 2003 03:09 PM UIN: 23
I run a pure stock with a small block 305 on a semi-banked 3/8 mile dirt oval. Rules don't permit much modification to any part of the motor. It is bored to the max. (40 over). What else can I do to get some more horsies?

Dirt Maniac

Total posts: 182
posted January 28, 2003 03:32 PM
what kind of rear gear do you have? you can try a couple things if not already done like canadian intake,camm,rockers,pushrods,longer rods,carb.

M.t.Pockets MotorSports

Dirt Forum Champ
Total posts: 1565
posted January 28, 2003 04:00 PM UIN: 54865418
get a good cam and gear it riht and you should be alright i ran a 307 for a couiple years and it was pretty good little motor on sloppy and dryslick tracks

Dirt Forum Racer

Total posts: 98
posted January 28, 2003 08:12 PM
hey rookieracer? what about this canadian intake? ive heard a little about these can you fill me in a little more?

Dirt Maniac

Total posts: 182
posted January 28, 2003 08:26 PM
bryanb, i dont really know that much either just heard people saying there better then stock but they appear stock. i got one on my 305 i think for flow but im NOT sure.

M.t.Pockets MotorSports

Dirt Freak

Total posts: 310
posted January 29, 2003 12:34 AM
lighter parts and good balance jobget the comp as high as you can

Dirt Full Roller

Total posts: 53
posted January 31, 2003 09:20 PM
In my opinion the canadian intakes are nice but not worth the money guys are asking for them. If you can get one cheap run it, if not put your time and money in other areas of your car. just my opinion. They are better but the gains aren't worth the headache of finding one or the money spent to get it.

Dirt Roller

Total posts: 17
posted February 09, 2003 10:22 PM
Are you locked into the 305 due to rules? If not, and if the budget permits, get a 350, the 305 and the 350 have the same stroke, however, the bore of a 350 is 4.000 the bore on the 305 bored out is only 3.776. a stock 350 would be like boring your 305 out another .224 (almost a quarter of an inch) then add to that if you wanted to bore the 350 out. If you must stick with the 305, and if your allowed (no cheating now) 2.02/1.60 valves, porting your intake runners to match your intake gasket and port your heads to match the intake gasket, and maybe a carb spacer, not to big, an inch would be a good place to start, jet your carb a pinch rich, these are each worth a little bit of power, The head work is of course going to give you the most noticeable gain, the carb work is only going to aid a littlbit. what rpm are you turning in the corners and down the straight? if you're above 6,000 peak your gear is going to be o.k., if you're below that, maybe a some gear will help ( make sure you have a cam with the power band up there though) hope it helps and good luck.

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