Deaddog Saloon

[Eric Smit]

Performance Olds 307

MOTHER OF GOD.

 

[Eric Smit]

How To Swap A 350 Or 403 Olds Engine In Place Of Your 307 - OldsPower.com

 

[Eric Smit]

And good god the 403 has a 7.8:1 compression. That's basically begging for turbos.

 

[ChrisJ]

And good god the 403 has a 7.8:1 compression. That's basically begging for turbos.

I believe many stock engines in the 1960s saw 10:1 and even 12:1 compression. I believe some modified engines in the 1960s even saw 14:1. You were able to be 104 octane at normal gas stations.

In the 1970s this dropped like a rock due to emissions laws, unleaded gas and fuel shortages.

 

[Eric Smit]

7.8:1 is preposterously low.

 

[ChrisJ]

7.8:1 is preposterously low.

Our 1931 model A is 4:1.
That's partially due to the quality of fuel they had back then but it's also partially due to the engine's design. They make a "high compression" head for the model A that is a whole 6:1 and many guys end up with knocking.

Point being, there is a good chance your 307 will knock on 87 octane if you use even a little boost regardless of how low it's compression is. Engine's of that type typically ran 9.5:1 and specified premium fuel and that's without boost.. You might get away with a little boost running 93 but I wouldn't expect anything huge without major mods.


I know you're not actually considering doing anything, but since it was out there I figured I'd respond to it. opcorn:

 

[Eric Smit]

that's fair. good info, regardless of my lack of motivation to actually do anything with it.

 

[ChrisJ]

It's been 30 years since I first saw this movie and I think it's held up pretty good.
I need to get a copy on bluray.

Christine - The best scene in Christine movie YouTube

 

[Eric Smit]

man, everything is on Blu-ray now.

 

[ChrisJ]

man, everything is on Blu-ray now.

 

[$ub$onic]

http://youtu.be/2_dQH2W9Ss4

Little fun from last weekend

Was scuffing In the new tires, finally stared getting some grip last run. Can't wait for this weekends autox

 

[Ms.DannyStone]

I let this car get out of hand.. I washed it today finally.

 

[Eric Smit]

I adore your license plate.

 

[ReeseLightning]

SubSonic where's that track ? That looks like a good test track to have some fun on.

 

[Eric Smit]

it was in Toledo.

 

[ReeseLightning]

O ok nvm that is too far to be practical

 

[ahtoxa]

Yawn.

 

[Eric Smit]

yawn.

 

[ahtoxa]

You know what? **** it. Gonna get my pack ready tomorrow and leave for an overnight somewhere. Yeah, it's going to a warm night in the tent, but **** it. I need to get away, even for just a day.

 

[Eric Smit]

can't argue with that.