Is the 307 combination as Terrible as what Ive read ?

[greatinspirational]

Looking at a natural P/SA car and adding weight down to Q/SA with a 307. Everything I?m reading about the 307 is bad though. Not sure I want to put the money into that motor or not

[ss3011]

If you are talking about a 307 Oldsmobile roller cam engine, that is a pretty good engine, with lots of potential. There is plenty of parts available, Olds used to give away lots of parts, good in Stock and Super Stock.

[greatinspirational]

The Chevy small block

[Alan Roehrich]

You need to reach out to Billy Nees.

[Jim Cimarolli]

That tiny 2 barrel carb kills it.

[Paul Wong]

Originally Posted by greatinspirational

Looking at a natural P/SA car and adding weight down to Q/SA with a 307. Everything I?m reading about the 307 is bad though. Not sure I want to put the money into that motor or not

It will go 1.20 under in the right hands. It?s got an 800 Q-jet.

If we are talking about a 307 Chevrolet, It looks tougher but has been defactored quite a bit.

[Mark Yacavone]

Originally Posted by greatinspirational

Looking at a natural P/SA car and adding weight down to Q/SA with a 307. Everything I?m reading about the 307 is bad though. Not sure I want to put the money into that motor or not

Depends where you read your information
Hot rodders and street rodders think the 305 4 bbl. in the worst engine ever made LOL

Also depends if you have the right car, and where you race.
The 71-72 Nova is de-factored down to 165...It's a Q,R,T car

Can't be all that bad, if you are a hands on guy.

If not , probably not the combo for you.

[Cglrcng]

Originally Posted by Mark Yacavone

Depends where you read your information
Hot rodders and street rodders think the 305 4 bbl. in the worst engine ever made LOL

Also depends if you have the right car, and where you race.
The 71-72 Nova is de-factored down to 165...It's a Q,R,T car

Can't be all that bad, if you are a hands on guy.

If not , probably not the combo for you.

I will agree totally, if you fully embrace the slow, where you race and the type of car can be everything without spending a fistful of dollars. You can go low altitude and fly for the same combo (8 10's under, then take it to just a thousand ft higher, and barely run under the index). But, hands on, and willing to put in the hard work it can be rewarding.

Just starting the hard climb here of just ordering the parts to take an old EFI 80's Era car from the dark ages of locked up ECM/PM (pretty much non-tunable), into the 2024 higher tech, tunable Era, and get it right without taking it out to an expert to pay a fortune to wire it all up takes a ton of money and time, but the learning is also fun if you have the time to learn. And I would not have it any other way right now. The mission, to the means to the end, is half the fun of getting there!

My plan though, includes a (plan B), way to within a few hours (should a failure happen without a slew of spare electronics), to be able to rewire it right back to where it is right now, at the track if necessary & overnight.

With all the above opinions running from a great combo, to a lousy combo, sometimes success is in the hands of the holder like Paul and Yac said, knowledge and hands on, blaze your own trail, and find a way to succeed.

As late as March I thought I had the worst combo available under the sun, then I embraced the slow fully, after experimenting a bunch, and just found out what improvements it really needs, and though a bit expensive these days, with a bunch of hard work, some of the expense can be minimixed.

Give me a do over, and the old days and I would choose a carbed combo any day, and solve my current issues with a simple expertly put together jetting kit, and a 1 day track rental. But, that just isn't what I chose to compete with.

Whatever you choose it is a challenge, just embrace the challenge, as there are no magic bullets.

[Henrys Toy]

Originally Posted by Mark Yacavone

Depends where you read your information
Hot rodders and street rodders think the 305 4 bbl. in the worst engine ever made LOL

Also depends if you have the right car, and where you race.
The 71-72 Nova is de-factored down to 165...It's a Q,R,T car

Can't be all that bad, if you are a hands on guy.

If not , probably not the combo for you.

Good morning Mark and to all,
At 165 HP that could be do-able. Problem today is going to be able to find engine parts like heads, blocks and intakes. That engine has small intake runners and intake valve. The venturi size isn't that far off for the engine that size. The later 305 Two barrel runs pretty well when someone that has an understanding of the combination goes to work on it. In the past I've found the 307 blocks to be pretty thick cylinder walls, and better late model oiling system. I used those blocks in 287 and 292 SB Modified engines a long time ago. Since it's not factored to death that might be a good combo to work with and mature.
Just my humble opinion.

Respectfully,
Henry Kunz 1534 H/SA

[Billy Nees]

Well, I guess it all depends on what you're looking for. 1.30 under ain't gonna happen. Not unless NHRA decides to give it a "gift" kinda' like the 302 FFFFords got.
It's a good, dependable combo and it's consistant. If you were looking for something to Bracket race and run some Combo races and an occasional Div. race, it will be fine.
I've gone .80+ under with mine in real good air. Oh, that's with a PG. A good metric would definitely step it up.