1967 Chev 302 parts choice question
 

Was wondering what choice for a block and crank would be best to build a stocker 67 302 chev out of the 67 block and crank had smaller journals and would be getting hard to find and as far I know bearing spacers are not allowed ?
Also wondering the best head casting number for the 67 chev 302 z would be for a stocker ?

Thanks for any help and thoughts in advance

Re: 1967 Chev 302 parts choice question
 

I can't answer your question (except no to spacers) but congratulations on picking such a fun project. I love those high RPM 302's and wish I had one.

Re: 1967 Chev 302 parts choice question
 

Thanks. I already have a project on the go, and then I picked up this old unrestored camaro and got thinking now I don't think I can resist
Thanks again

Re: 1967 Chev 302 parts choice question
 

I think crank spacers are ok in stock, when you use a bowtie or dart block, you need spacers for small journals crank. Tom

Re: 1967 Chev 302 parts choice question
 

Rory, I would contact Dwight Southerland (forum member). He would be a wealth of information on this combo. Hope this helps.

Re: 1967 Chev 302 parts choice question
 

The early 68 Z/28s used the small journal crank & block also, we had one & raced it as a stocker in the early 80s

Re: 1967 Chev 302 parts choice question
 

Mr. Duzac knows a thing or two about this combo.

Re: 1967 Chev 302 parts choice question
 

Duzac and Peterson, the Wenzel brothers ....................................

The thing to do would be to get a small journal BowTie block. No spacers required.

If they are going to allow aftermarket cranks, perhaps Eagle might be convinced to make a small journal 3" stroke crank.

The legal castings are : 462,041,186,492,291

The intake you need is a 3917608

You can use the new Quick Fuel carburetor.

You probably want to pick a cylinder head guy, and have him tell you what heads he wants, then buy 3-4 pairs so he can pick through them.

Welcome to the asylum, and good luck.

Re: 1967 Chev 302 parts choice question
 

Bowtie block with spacer bearings.
A 283 crank is good. Look for forging # 236.
Heads - be careful. There are good heads and there are not-so-good heads. The original big-valve 462 and 291 heads are good. The 041 may have some benefits.
The intake casting is 610; 608 was the part number.

Aftermarket, aftermarket, aftermarket as much as possible.

Re: 1967 Chev 302 parts choice question
 

Thanks so much for all the replies
I would like to talk more on the subject with some of you and learn what I can on this combination
Dwight maybe I can shoot you a few emails ?
Thanks again everybody

Re: 1967 Chev 302 parts choice question
 

Rory do what real engine builders do when building a stocker motor.Get your self a large journal crank and have it cut down to small journal.

Re: 1967 Chev 302 parts choice question
 

Jeff Lee, crank spacers are legal with bowtie and dart block, Alan Roehrich they don't make bowtie or dart small journal blocks, look up rod specs on approved parts. Tom

Re: 1967 Chev 302 parts choice question
 

Tom, they have made small journal Bow Tie blocks, I've worked on several. They go in an out of production, and are hard to find. The first 4 digits of the part number are, or were, 1248, they share the same casting box as the 1248050 medium deck block (3.98 rough bore, 283 main journal, casting #12480050) and the 12480097 SB 2.2 block (4.116 rough bore, 283 mains, SB 2.2 lifter pattern, casting # 10051184A). They made a 3.98 bore block with 283 journals, standard lifter pattern, and a 9.025 deck height. If/when they'll make any again is a hard question to answer. If memory serves correct, the casting number was 10051184, I think one part number was 12480084. It was originally made for the 18 degree NASCAR program.

They don't make a Dart small journal. They probably won't, but you can always ask. What they won't do is make a Dart block that is 3.875 or smaller bore. The SHP blocks are 350 main, it might be possible for them to make a small journal version, but they'd probably want to make 50.

Re: 1967 Chev 302 parts choice question
 

So crank spacers are legal with Bowtie block but not with the larger journal gm block ?

I was thinking at one time of using a 70 era block and a 283 crank , but then thought I could not use a bearing spacer ?


Also do they make a gm performance replacement manifold that is legal ? Or only the gm stock original manifold

Re: 1967 Chev 302 parts choice question
 

Large journal blocks with spacer bearings are accepted. Depending on how serious an effort you want to do, the Bowtie block is a much better investment for the long run than a production block. Shoot me a PM and I will send you my email address if you want to bypass the forum. Also, it will also help you to contact John Duzac and the Wenzel Bros. They are great guys to talk to and will be willing to share info and experience.

Re: 1967 Chev 302 parts choice question
 

correct me if i'm wrong but, wern't the small journal Z-28's all 2 bolt mains?


where does that leave the aftermarket blocks?


and who was it crying about the amc guys getting a break on an intake and carb?.........;)

Re: 1967 Chev 302 parts choice question
 

Rory, to the best of my knowledge, there is no legal replacement manifold. I sold the last one I had back in February. They usually bring around $400 to $500. The guy who bought mine is building a stocker.

You can use the spacers in a production block, a Dart block, or a BowTie block. I would not use a production block, as Dwight said, you're money ahead using the better blocks. They last longer, stay fresh longer, and make more power. You spend a lot of money on the blueprinting operations on a production block that are not needed on a race block.

Re: 1967 Chev 302 parts choice question
 

Thanks again for all the info
I agree the Bowtie or aftermarket block sounds like a better choice for sure, and I wasn't sure on the bearing spacers if they were allowed or not
I did see some manifolds for sale on eBay

Does anybody know the number on the quick fuel carb that is allowed ?

Thanks

Re: 1967 Chev 302 parts choice question
 

Rory, it's the SSR-780-VS. Call Phil Vickus at Quick Fuel, 270-793-0900, or call Jimmy Bridges, 615-228-3516. Jimmy is a good option on heads and intakes as well.

Re: 1967 Chev 302 parts choice question
 

Thanks !!

Re: 1967 Chev 302 parts choice question
 

Hey Dwight

I did shoot you a pm ..just so you know

Thanks

Re: 1967 Chev 302 parts choice question
 

Some years ago, the late Don Blair had a "bunch of stuff" in the patio of his house. He and I went over there, he had piles of heads, blocks, some intakes, etc. and he wanted three hundred dollars for all of it. One trip to the bank,three pickup truck trips later to and from his house,I was going through piles of cores-some junk, most serviceable, some very good. One thing I noticed about SBC blocks--you went through a very thorough inspection and went through five or six before you got one you could really use in a stocker project.One block was a #660 casting-a 68 327. All the lifter bores were dead center into the bosses, the cam tunnel was dead center in its supporting boss, so we sonic tested it to find all 8 cylinders dead center in their respective locations, so I gathered a steel crank,8 Manley rods, a set of Venolia pistons, and sent it to Gregg Luneack. Fine machinist and good guy if there ever was one. He really liked my block and wished he could have it for a Super Stock powerplant. I also have a Dart block that I'm doing a motor off of. I feel that while the 660 block was a great deal, it took some looking. For the same money(or less), and a lot less time, the Dart block would be the way to go. Mass produced castings come with variances and irregularities that can't be helped, and the result is that some are better than others. Intakes and heads show this. When flow benches got more common, more and more stocker heads and intakes got checked out, so that is why most stocker racers maintain an inventory of several spares. Serious racers with flow benches often go through 10 sets of heads, and match up the best two for their best engines. Stock eliminator requires the best effort with the best parts.The day of going to a junkyard, getting any old numbers correct core, rebuilding it, installing it in a car and setting records all over the place are long since over,if they ever existed at all. The Dart block with the 283 crank is the good place to start. When you use a Manley or other good aftermarket rod, make sure you check the length and the big end sizing. You would be suprised at what you might find. Just because its new doesn't mean it's right. Good luck and best wishes on your new project. I really want to see it run!

Re: 1967 Chev 302 parts choice question
 

Hey Greg

Thanks for all the info,
funny story ... how things have changed $300 for 3 truck loads of chev engine parts...

Thanks for the luck and wishes, always needed.........

Ya I am excited about it, looked at some of the other ones that have been around and they just impress me

Thanks again

Re: 1967 Chev 302 parts choice question
 

Rory,
If yor interested. I have an original 67 302 crank #3815822 std/std
2 67 bare heads #3917291 (C-17-7) (C-22-7) 1.94 & 1.5
1 67 327 block .020 over #3892657 small journal

Ron