|01-25-2013 01:59 AM|
Your point is alright for me. The 3.73 gear can be got cheap online.
|01-24-2013 09:34 PM|
|cobalt327||Adding a 3-3/4" crank to a 305 will increase the torque. No, it's not cost effective.|
|01-24-2013 07:00 PM|
A stroker crank does not make more torque, the torque is simply a displacement function more equals more, less equals less; PERIOD! The only thing diddling the bore to storke relationship does within a fixed displacement is move the RPM around where the peak occurs, not the amount. Longer stroke lowers the max RPM where the peak occurs, shorter raises that point. For an otherwise idential configuration of parts that's all that's happening.
|01-23-2013 03:55 PM|
Nothing wrong with a 305. I have one out of 86 pickup in my 32 highboy. Its got a mild Competion Cam, roller rockers, Edelbrock performance intake with 600 carb, flowmasters with headers. Gets along way faster than I want to run. Here is video of what it sounds like
32 Ford - YouTube
|01-22-2013 06:49 PM|
|01-22-2013 03:55 PM|
A 305 is not the best sbc to make loads of power. You can be thankful for 8 cylinders offering powerstrokes per rpm, and a 3.48 stroke to pull. Vortec heads , summit headers, a performer cam and intake with 3.73 gears , made a big difference from stock.
A cam is good , but if you are not sinking a ton into it, stay mild. Vortec 350 1.94int heads work good/cheap in a 305, just mill them to cc. The newer ls6 beehive spring and small retainer is a stable valvetrain for a performer cam.
A low profile supercharger will get you rethinking the 305 potential. Mucho bueno.
|01-22-2013 01:51 PM|
|01-22-2013 01:24 PM|
According to Sam Weiss' flow sheets, the L30 305 Vortec head flow respectably even unported: 221 cfm int./163 cfm exh. @ 0.500" lift/28" water. Better than all but one professionally ported 416.
Needs springs/retainers, a Vortec intake, center bolt valve covers, and either self aligning rockers or adding screw-in studs and guide plates to use standard rockers.
|01-22-2013 01:10 PM|
|1Gary||The Vett 58cc heads we bought a pair at a auction to re-sell.They have almost no chamber and the pistons that go with it are deep dished.|
|01-22-2013 10:00 AM|
An article w/some info/links: Chevy 305
|01-22-2013 01:28 AM|
If your already at 200hp then you should be happy. Get you a set of gears and then you wont be bothered by anymore engine upgrades cause youll be roasting the tires off your gmc. Get you a good free flowing exhaust system and your in the money.
I have a mild 305 with edelbrock performance cam(rv cam)and matching lifters, stock 601 heads, headers, true dual exhaust, 700r tranny, 342 gears. and im happy. Last dynoed at 240hp/230tq.
|01-21-2013 08:01 PM|
|77 gmc 1500.||thanks for the advice. I'm looking to make it into a high 200hp or maybe even a low 300 hp engine if possible without supercharging it. it has about 200hp right now|
|01-21-2013 07:05 PM|
Chevy small block 305
There is nothing wrong with a 305 engine. I have had several cars that had 305 engines. Check the casting number of your heads, I think it's the 4416 is the good ones. They will have to be ported. F-Bird'88 can give you some good advice of the work they will need. This summit cam would be a good cam to upgrade to. Summit Racing® Camshafts SUM-1103 - SummitRacing.com. Be sure to buy the kit that includes cam, lifters, and valve springs.
|01-21-2013 06:55 PM|
|vinniekq2||Mild cam,headers,improved exhaust. Start there and see what you think|
|01-21-2013 06:25 PM|
|77 gmc 1500.||
chevy small block 305
I just bought a fully restored 1977 gmc 1500. the body and interior are in great shape and the motor has a fairly recent rebuild. it has a 305 chevy small block and i am wondering what i can do to up the power in it and the price each upgrade will roughly cost. I would appreciate if you don't post about how the 305 is a waste of time and money and to buy a 350, i like the engine and am interested in adding power to the engine. So far i have looked at a stroker kit (making it a 335), new cams, vortec RSH 1.94 heads, edelbrock 650 carb, holley 300-36 intake, and cat back exhaust. will this be a good setup or should i add or lose anything to it. i am also looking at adding 3.73 rear gears to it. just wondering what someone with a little more knowledge thinks of this and also what cams would be a good choice. thanks