Olds 330 confusion....39 or 45 degree cam
#1
Olds 330 confusion....39 or 45 degree cam
Hi.
I pulled the intake from my 67 330 SBO and i found .841 lifters in it... does it mean i need a 45 degree cam in it?
Its a 394417 #3 Block ( 9:1 comp. 2bbl engine)
I found various information about it.. some say its 39 degree..
Is there a way to tell it from the outside... drill spot ect ?
I pulled the intake from my 67 330 SBO and i found .841 lifters in it... does it mean i need a 45 degree cam in it?
Its a 394417 #3 Block ( 9:1 comp. 2bbl engine)
I found various information about it.. some say its 39 degree..
Is there a way to tell it from the outside... drill spot ect ?
#2
check out this site, its great for your engine questions: http://www.442.com/oldsfaq/ofeng.htm#Engines
#3
All 330's had .842 lifters.
Take a piece of paper and roll it up, then stick it in the lifter bore. Is it parallel with the cylinder or does it tilt slightly towards the center?
Parallel is a 45, slanted slightly is a 39.
Take a piece of paper and roll it up, then stick it in the lifter bore. Is it parallel with the cylinder or does it tilt slightly towards the center?
Parallel is a 45, slanted slightly is a 39.
#8
Thanks guys! I´ll try the paper trick that cutlassefi mentioned.
The oldsfaq page stated that 67 330 had .921 lifters and 39 dgr. cams... I was a bit confused, as i saw the .842 holes in the block.
The oldsfaq page stated that 67 330 had .921 lifters and 39 dgr. cams... I was a bit confused, as i saw the .842 holes in the block.
#10
#11
No, they really didn't, and when they DID, it was well documented in the Service Guild or TSB documents as well as in the parts book.
Now I WILL say that I just purchased a set of 1967 Service Guild bulletins at the NAOC meet, and I was surprised to find a reference to a "special crankshaft" in the 1967 330 motors. It doesn't say if this crank is cast or forged, nor does it say what is "special" about it. It DOES say that the balancer is unique to this crank and that if replacement is needed the crank and balancer must be replaced as a unit. This is the first I've heard of this.
I'll also point out that every SBO uses the same 3.385" stroke, so a later cast crank will drop into a 330 block. Of course, the converse is probably more common.
Now I WILL say that I just purchased a set of 1967 Service Guild bulletins at the NAOC meet, and I was surprised to find a reference to a "special crankshaft" in the 1967 330 motors. It doesn't say if this crank is cast or forged, nor does it say what is "special" about it. It DOES say that the balancer is unique to this crank and that if replacement is needed the crank and balancer must be replaced as a unit. This is the first I've heard of this.
I'll also point out that every SBO uses the same 3.385" stroke, so a later cast crank will drop into a 330 block. Of course, the converse is probably more common.
#12
No, they really didn't, and when they DID, it was well documented in the Service Guild or TSB documents as well as in the parts book.
Now I WILL say that I just purchased a set of 1967 Service Guild bulletins at the NAOC meet, and I was surprised to find a reference to a "special crankshaft" in the 1967 330 motors. It doesn't say if this crank is cast or forged, nor does it say what is "special" about it. It DOES say that the balancer is unique to this crank and that if replacement is needed the crank and balancer must be replaced as a unit. This is the first I've heard of this.
I'll also point out that every SBO uses the same 3.385" stroke, so a later cast crank will drop into a 330 block. Of course, the converse is probably more common.
Now I WILL say that I just purchased a set of 1967 Service Guild bulletins at the NAOC meet, and I was surprised to find a reference to a "special crankshaft" in the 1967 330 motors. It doesn't say if this crank is cast or forged, nor does it say what is "special" about it. It DOES say that the balancer is unique to this crank and that if replacement is needed the crank and balancer must be replaced as a unit. This is the first I've heard of this.
I'll also point out that every SBO uses the same 3.385" stroke, so a later cast crank will drop into a 330 block. Of course, the converse is probably more common.
#14
We don't know that for sure, it is too vague. The only "special" balancer I know of is the W31 but the crank is ordinary except for maybe a specific bearing clearance, as the engine was blue printed. Food for thought at any rate.
#15
#17
You are jumping on a band wagon. Have you seen one? Has anyone ever seen one? Just because there is paper work saying it was possible don't make it a fact that it was used.Anyone seen that solid main web 403 LOL.
#18
Yes, at least one member on here has come across the cast crank. Could it have been swapped? Anything is possible aftwr 50 years. But there have been some found in 330 blocks and here is literature to at least show it might have happened.
#20
Of course, GM would NEVER use customers as unwitting guinea pigs...
Ultimately, what we need are the appropriate pages from a 1967 Engine Assembly Manual, with all the final revision notes throughout the model year.
#21
Just to be clear, NOTHING I have seen says anything about a CAST crank, only a (in the best Church Lady tradition) "special" crank. I will admit that the circumstantial evidence (especially the need to change the flywheel along with the crank when replacing) SUGGESTS that this was a test run of 1968-style cast cranks to provide real world testing data.
Of course, GM would NEVER use customers as unwitting guinea pigs...
I've never seen any factory documentation that ever said there were SMW 403s, so I don't understand how that is even germane to this discussion. As for the "special" crank in the 67 330s, Olds would not issue documentation in the form of parts book notes and (two) Service Guild bulletins for a mythical part. We're not talking about advertising brochures printed months before the release of the model year that showed options that were cancelled before production started, we're talking about service documents released AFTER the parts were already in service. And one more time, NOTHING in the literature uses the word "cast", only "special". Of course, nothing in the literature says the other 330 cranks are "forged", either.
Ultimately, what we need are the appropriate pages from a 1967 Engine Assembly Manual, with all the final revision notes throughout the model year.
Of course, GM would NEVER use customers as unwitting guinea pigs...
I've never seen any factory documentation that ever said there were SMW 403s, so I don't understand how that is even germane to this discussion. As for the "special" crank in the 67 330s, Olds would not issue documentation in the form of parts book notes and (two) Service Guild bulletins for a mythical part. We're not talking about advertising brochures printed months before the release of the model year that showed options that were cancelled before production started, we're talking about service documents released AFTER the parts were already in service. And one more time, NOTHING in the literature uses the word "cast", only "special". Of course, nothing in the literature says the other 330 cranks are "forged", either.
Ultimately, what we need are the appropriate pages from a 1967 Engine Assembly Manual, with all the final revision notes throughout the model year.
#22
Just going by what has been found by at least one member here. Unless someone can show me a forged 330 crank with a different balancer and flexplate, what does it mean? Yes, I know some early 330 cranks have a smaller balancer bolt. There was foundry fire, was it 67 or 68? That could have caused the shortage. Who knows for sure, special could also mean different, could it not? There is no 403 solid main factory literature out there such as this, that I am aware of, for your comparison. Joe, this site's leading expert shows that it is possible at least, with documentation. It could be a very small production number for 67. Interesting and I would pissed if I bought a 67 330 just for the forged crank, another reason to at least pull the pan.
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