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Author Topic:   305
lawdog32000
Dirt Roller

Total posts: 8
posted June 09, 2003 09:53 PM  
Is there anyway that you can beef up the 305 to get more power or torque for pure stock.
ENGINE: Engine must be stock for make and model in stock location. Maximum camlift is to be 455 at the valve, checked with dial indicator. Block, heads, and intake manifold are to be cast iron only. No porting, polishing, nor angle milling of heads will be allowed. No GM angle plug heads, no bow tie heads, and no aluminum heads will be allowed. The maximum valve size for Chevrolets is 1.94 intake and 1.50 exhaust. ***** -in studs and over-size valve springs will NOT be allowed. Guide plates will not be allowed. Crankshaft and connecting rods must be stock for make and model of engine. No after market racing parts allowed. Must maintain stock bore and stroke combination. Use of hydraulic cams only: No roller lifters, overhead cams nor gear drives allowed. No roller rocker-arms will be allowed. Pistons are to be cast flat-top only. No pop-up pistons will be allowed.
THANKS FOR ANY HELP THAT YOU CAN GIVE.

ruggs66
Dirt Maniac

Total posts: 193
posted June 10, 2003 07:36 AM  
there is lots that can be done to get more power from a 305....how much money do you want to spend on it?

what size is your track?


lawdog32000
Dirt Roller

Total posts: 8
posted June 10, 2003 03:32 PM  
track is 1/4 mile with slight banking in the corners, as far as money I don't want to spend a lot. I also don't want to be contested. The engine post is the specs for the track. I want to keep it legal.

racer17j
Dirt Forum Champ
Total posts: 5390
posted June 10, 2003 06:39 PM  
your rules dont say anything about milling the block,so I would zero deck the block and make your con rods full floating to start with.

justin
Dirt Freak

Total posts: 263
posted June 11, 2003 10:11 AM  
I agree with racer17j, go with the 350 you'll be a lot happier. Find a good set of double humps and flat mill'em or use a vortec setup if your budget allows.

justin

odb93
Dirt Forum Champ
Total posts: 537
posted June 11, 2003 03:41 PM  
I have heard that technology is the replacement for displacement.

Eljojo
Dirt Forum Champ
Total posts: 968
posted June 11, 2003 08:11 PM  
The only thing better than cubic inches is cubic dollars!

Hutch5375
Dirt Maniac

Total posts: 123
posted June 13, 2003 11:45 AM  
Is there such thing as 9:1 compression heads for a 305?? If so what are the casting numbers??

MiPinto6
Dirt Maniac

Total posts: 118
posted June 13, 2003 04:02 PM  
You could also use the 305 heads on the 350 block. It should boost the compression up a bit.

justin
Dirt Freak

Total posts: 263
posted June 13, 2003 04:41 PM  
The 305 head does boost compression but it's not really worth it because the valves are too shrouded.

gould
Dirt Forum Champ
Total posts: 730
posted June 13, 2003 04:46 PM  
i ran a 305 in my camaro stock bottem end with a cam dynamics 272 adv dur, 454 lift. worked great with a 4 barrel and headers. had a mild stall converter. turn 6500 rpm no problem. this was a street car. gould

AIRFLOWDESIGN
Dirt Roller

Total posts: 13
posted June 22, 2003 03:23 PM  
I can get vortech cylinder heads for the 305 and 350 new. Ron

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