just curious if anyone knows of a stroker combination for a 307 block? if not, can anyone help me with:
rod length
cylinder bore
crank stroke

thanx

I believe that info for the 307 is as follows:
Stroke 3.25"
Rod length 5.700"
Bore 3.825" or something close to this. There was another post here on this bb somewhere that listed the actual bore size if I am off.
Hope this helps you..

WHY?? It is a small bore engine, and you would have WAY too much money in it, when compared to a 350 buildup.

In response to the last posting:

I'm interested for the same reason most of us build our cars- to be unique, to try something different. I wonder if the guy that said, "put a 400 crank in a 350 block? I wonder what that would do?" I'm just curious if any one has heard of unique setups with this engine. I've seen stroker setups for a 305, so I dont think the original displacement really matters. The thing I'm trying to find out is from an engine builders prospective is there any oppurtunities in a 307 donor block.
As to why: I think most others would agree with me: "use whats available and wont cost a wallet-full to get into" The 307 is whats in the car, so it wont cost me anything to use this donor engine.
I have a feeling in this case size doesnt matter. If someone doesnt think so- try convincing the guys and gals on this site that are running 302's and 327's.
Anyhow, I'm just a gearhead looking to do something interesting and unique- any help is appreciated.

I think money comes up because a 350 can be picked up at the local u-pull-it yards for under $100. Any stroker kit will cost way more. Besides unique in not a term normally associated with small block Camaro's.

Steve R.

Hey, I'm all for unique but sometimes things aren't done because they don't work. AIDS is kind of unique but nobody wants it!
The 307 is such a dog because of the very small bore size which shrouds the valves and causes problems with breathing.
As for cost, I put a $35.00 350 in my pickup after putting a set of gaskets, a few cans of gumout, a timing chain, a pressure wash and some rattle can paint on it. Total investment in the basic motor, under $200.00.
A stroker kit for the 350 is very inexpensive from companies such as Northern Auto Parts by the way.
Good luck on your project, if you do build a stroker 305 I would be quite curious how it does!
Art Rasmussen
Art Rasmussen Design and Fabrication, Inc. WWW.HOTRODDINGTODAY.COM (http://WWW.HOTRODDINGTODAY.COM)


[This message has been edited by Art Rasmussen (edited 03-11-2000).]

I rode in a car with a built 307 once. It had a set of #462 double hump heads,pop-ups, a solid lift cam, a Z intake, and some other goodies done to it. Ran a little better than a stock 350-300hp. engine. For the amount of money he had in it, I could have built up a real strong 350. As for unique, some things make sense, some things don't. I would put a 307 stroker engine under the second statement. But hey, it's your car, you do with it what you want. I think you will just get a bunch of funny looks and probably some crass coments if you tell them it's a "Stroker 307" . http://www.camaros.net/forum/biggrin.gif

[This message has been edited by Doug Garland (edited 03-11-2000).]

I've got a 307 in mine. Had the same questions as YRU- . Got about the same answers(just build a 350) well I don't have a 350 or any cash for one. At the cost of gas I'm pretty happy with my 2bbl. 307!!! It'll smoke the tires. I don't race it. most people think it's a 350. give 'em a ride and they can't hear or feel the difference. Looks like a 350. runs better than most of the 2bbl 350's I've ever had. sure as hell gets better mileage. I found a 406 short block I'd really like to have, but I think i'll wait for gas prices to drop. Iguess what i'm trying to say is, I've got a 307 that'll smoke the tires (both) and gets 22mpg in a car that cost me $400. Sure if I had 4 grand to stick into a motor I'd probably have something different. For now my little 307, that sounds like a 350, will have to do. Just do what you want to. My info on BORE:3.875 stroke: 3.25. I'm gonna try a set of 305H.O. heads. How does it run now? I've seen a 283ci run low 10's in a 64 Vette. The man that built that motor didn't think he needed a 350. He had 327s, 350s, 454s, etc... Why did he build a 283? He died about 4mos. ago, so I guess I'll never know. If I asked anyone on this site they'd probably tell me he should have built a 350. Oh well.

just my 2 cents http://www.camaros.net/forum/biggrin.gif
Jeff

[This message has been edited by t-tops-ana-4spd (edited 03-12-2000).]

I'm not sure on this but a3.48 inch crank in a 307 might work if you do .020" off the deck, and use a 5.565 '400' rod. Then, you can use a regular 307 piston. Have the assembly balanced (very important!!!!).

I personally have run the 307 myself and havent any complaints. It is a good all around engine, economically and performance wise but, if you want to stroke it go with say 350 -3.48 str crank and use the 5.7 307 rods. The piston manufacturer will make the pistons for your needs. Just tell them what u want. As mentioned the head sollection is a problem, taking in account of "quenching" and C/R drop due to a larger chamber of the better flowing head. I would recommend a 305- 601, or a 416 HO. Punching the intake and exhaust out to a 1.94I and 1.6E and gasket matching the ports. Hopes this helps any.

TAKE A LOOK SEE AT THIS SITE http://www.speedomotive.com/

cool web site, 71 camairo. We'll see what they can do for us poor guys with those sad little 307s. http://www.camaros.net/forum/biggrin.gif

just an idea: your 307 with a 3.48 crank (350) sb 400 rods (5.565). if your block has about .020 deck clearance, this will leave the piston sticking out of the bore .075. Might be able to mill the tops of the pistions about .060. I think i've seen .060 thick head gaskets. this will give you. about .045 piston to head clearance, which is fine. and as long as you use a realitivly mild cam, .480 lift or less, valve clearance shouldn't be a problem. all clearances must be checked. the only way to pull off a stroker 307 on a budget is to get creative. 2.02 valves will not work. and do what you want to do, thats what hot rodding is all about. with .030 overbore this combo will give you 333 cubes. most people do not like 307's because the factory never made them high perf. but you can. feel free to email me if i confused you or have questions. one more thing, do not mill the block. the piston milling might not work. just an idea. bla bla bla...


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67 410sb 11.76 @116.6

lonnie

by the time he has done the mill work he has spent the mony for a set of pistons. the practical thing to do is use the light 305 or 267 crank and have the pistons made. just food for thought ay. by the way the 305 ho's or 305 swirlies with 1.94I and 1.6E will do fine.

71 Camairo

[This message has been edited by 71 Camairo (edited 03-23-2000).]