Puttin' Perfume on a Pig...307 Tech?!

With 416 head on a stock 307 lower (1968, if it matters) will the CR be low enough to run regular gas?

Also, were these 416 305 heads the infamous 'thin castings' that tend to crack?

What about 354434 305 heads from 75-79? Hardened seats?

 

I’ve ran a few sets of 416 and 601 with no cracks. The earlier ones like your alternate I’ve had crack, posted a thread on it last year.

On the one I did was actually measured at 10.4:1 and it ran fine on 93 fuel. Used a Ex262 cam. Now, the caviat, pistons 0.023 in the hole and used a steel shim gasket specked at 0.016 so quench was 0.039-40. Also broke every square edge on the heads combustion chamber nice and smooth round over, no hot spots. Look into flame fronts and small bores, it will answer a lot. If you’re worried about the compression take a little more off in the round overs. Just be consistent it goes fast.

There’s certainly more costly and way better heads to use. I only had a around 6-700 in the complete engine. Don’t over think it, don’t over do it, and don’t over spend. It’s a nice running, nice sounding, reliable 300 hp engine recipe. Your not going to win many drag races with it.
The idea, to me anyway is to take somethings nobody wants (=cheap) and have some fun. Tell them it’s a warmed up 283.

 

Glad this old thread is still going. I'm still rooting for the underdog 307s.

 

They are not 307’s……. They are “stroker” 283’s.

 

Not when ''large journal''and factory. JW

 

Please leave 283s out of conversations about 307s. Kinda like comparing ice cream to crap.

 

Nothing wrong with 283's, nothing wrong with 307's. Unless they are junk. Then they are junk. If they are good, they're good. Capish?

 

It's still a small block any way you slice it.... Besides... I could always use a large journal 327 crank...

 

I capish!..
I should know.... I'm Italian!

 

Deuces, i have one and its yours....come get it. JW

 

3.875” bore 3.250”stroke SBC . Just gotta be a 283” stroker..no doubt about it. Chevrolets small block factory “stroker”.

In 57 racers made 352’s by boring and stroking 283’s and factory held off .020” on the crank in 67. I always wondered if they did it not have made it the same as any Ford.

 

How's about on my next trip too N.S.W.?????...
I'll have the plane make a stop in NZ before landing in Sydney...

 

If it was a factory item it will be a large journal =307'' or it will be a 306'', same scenario as the 301''verses the 302''. I will agree to a point that the 307'' is a stroked 283'' but it only happened to replaced the 283''in a large journal format. JW

 

I am back in the stroker 283 camp.

Today I bought a 307 that appears to be in pretty good condition and a pair of 416 heads.

Now to figure out what cam works with a stock 700R4 torque converter.

 

You paid money for a 307?

 

Not much, but it made me happy. ...and it's a 283 stroker motor from here on.

 

If that's what you want to call it. At the end of the day it's still a 307.

 

I disagree….it was always a stroker 283 to me.

 

I've got an old 307 sitting in the corner of my shop since the mid 80's that I've always planned to pull the crank out of to put in a 350 block and make a large journal 327 with some aftermarket aluminum heads, a nasty cam and some 11-1 or so forged pistons. I've got a couple 400's too in that same corner 25+ years that I could build if I need one. As soon as I'm through playing with Chevy big blocks and Ford flatheads, I'll build one.

My problem is I like to do the fabrication part of the build like finding pieces to stitch together a 30/31 Model A coupe or roadster and build a 32 frame for it and make it a roller but the next steps of getting one running and finish it just isn't as much fun. I've got several projects to that point and I just push them aside and start on another one.

 

I have said it before, if it's a 283 stroker it would have a small journal crank. Is every SBC a bored and/ or stroked 265..... i think not. JW

 

Agreed All small blocks 1968 and up are large journal including even the POS 305. Another interesting point, the first year of the 350 which came in SS Camaro's in 1967 were also large journal but retained the canister oil filter and road draft tube of 1967 and earlier making it an odd duck.

 

I think it will be a good engine for dad's t-bucket when it gets rebuilt to look like Anderson's T roadster.

A car like that couldn't use a bunch of horsepower even if it had it.

 

I liked the 307 for a few reasons. No more draft tube and a real PCV system. They were always cleaner inside when I pulled the stock intakes, YMMV. They had a spin-on oil filter. And they were plentiful in wrecked donor cars. I wish I had a couple salted away.

 

Not the one I opened up in 81.

 

Some are getting worked up over large journal vs small journal. The 307 does have the same bore as a 283. It also has same stroke as a 327. So it is effectively the same as a stroked 283 with a small journal 327 crank used for the stroke increase. 307 just didn't start out as a 283; and it has the large journals of the later model SBC. Those large journal enable to run the 307 crank in a generic 350 to end up with a large journal 327, or a destroked 350 if you want to call it that. I just don't get worked up over the language. Build a 307 engine for your car and drive it. I guaranfuckintee the car doesn't care if the engine is a small or large journal. Or whether you call it a stroked 283 or a 307.

 

I have a 41 Ford pu with what I think is a 307. If I really cared I'd check the serial numbers. It also has a Saginaw 4 speed with a 56 Chevy rear end with 3:something gears. It's not real fast but it's fun to drive and that makes me happy. Mostly I just want to follow this thread because I dig underdogs.

 

How about an actual 307 "stroker" using the same crank commonly used to make a 383" out of a 350 block....makes 365" in a 307 block.
Guy who built it (John Beck Racing in CA) finished 3rd at the Jeg's Engine Masters Challenge in 2004, made 556 hp and 518 ft.lbs.

John Beck - Engine Masters (motortrend.com)

 

Link to the first half of the 365" stroker 307 article:

The Engine Masters Program (motortrend.com)

 

I’ve got one of those 307 w 400 crank setting on a stand over here.

 

Any real world experience with a lockup 700r4 behind a 307? How much does lockup converter screw with cam choice? Is the .420/.443 RV cam about as big as you can go and still lug around in overdrive? Can I go one step bigger?

What happens if you don't use lockup? Will that lead to an early death for the trans?