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Ok,what year did they start with the Fa 455 blocks. The Super Cars Unlimited fact book says the the F block was used 68-72 and the Fa block was used 72-76. Was 72 a over lapping year or is the book wrong? I have always thought the Fa block was a 73-76 deal. Anybody?
That incorrect info just keeps getting regurgitated. I personally have a sans-serif "F" block with a 1973 VIN derivative stamp, and I've seen a similar "F" block with a 74 VIN derivative. I should note that the engine I have also has a manual trans crank and "KA" heads. One may infer from this that the F blocks were used past 1972 on cars with manual transmission, but I've also seen an "FA" block with the hole for the pivot ball drilled and tapped. I have not seen any "FA" blocks with a 1972 VIN derivative.
For what it's worth, here's the "FA" block with the pivot ball hole. It's hard to make out, but that's a 1973 VIN derivative.
That incorrect info just keeps getting regurgitated. I personally have a sans-serif "F" block with a 1973 VIN derivative stamp, and I've seen a similar "F" block with a 74 VIN derivative. I should note that the engine I have also has a manual trans crank and "KA" heads. One may infer from this that the F blocks were used past 1972 on cars with manual transmission, but I've also seen an "FA" block with the hole for the pivot ball drilled and tapped. I have not seen any "FA" blocks with a 1972 VIN derivative.
For what it's worth, here's the "FA" block with the pivot ball hole. It's hard to make out, but that's a 1973 VIN derivative.
I can share I had an F block with the 1973 derivative stamped into it. Like Joe's, it had a crank drilled for the manual transmission. One difference was that it had J heads on it.
My point was more about the lack of manual Collonade cars. There can't be that many.
But the number isn't zero. A good friend of mine in college had a 1973 442 V-code (factory 455 and four speed). While I've never been a fan of the collonade cars, I wish I had appreciated how rare that one was at the time.
But the number isn't zero. A good friend of mine in college had a 1973 442 V-code (factory 455 and four speed). While I've never been a fan of the collonade cars, I wish I had appreciated how rare that one was at the time.
I would love a car like that! Do you know what four speed they would have put behind the 455?
But the number isn't zero. A good friend of mine in college had a 1973 442 V-code (factory 455 and four speed). While I've never been a fan of the collonade cars, I wish I had appreciated how rare that one was at the time.
The 73 442 4 speed would have had the same powertrain as the same specced 72?
From '72 to '73 the compression ratio stayed the same, but the heads changed from Ga to J. The J heads are supposed to be more restrictive on the exhaust ports but I dunno if there was any overall difference from a "black box" perspective.
From '72 to '73 the compression ratio stayed the same, but the heads changed from Ga to J. The J heads are supposed to be more restrictive on the exhaust ports but I dunno if there was any overall difference from a "black box" perspective.
73s also had EGR, 72s did not. It also appears that V-code 73s may have gotten K or KA heads, but I don't have proof of this. This would be consistent with that 73 F block that I have.
Collonade cars were GM A bodies from 73-77, named so because the name means row of pillars. New federal regulations banned hard tops by mandating better rollover performance, so every one had a B pillar.
yes- years ago i got new front springs for my 74 supreme- didn't notice at the time but after we got em on and the front end seemed a little high, I noticed the slip said '1974 full size' .. I thought the counter guy knew the cars..maybe that's why he was thinking full size..
I have a 73 derivative f serif block that came out of a jet boat, so not original to the boat. Assuming it came out of a manual transmission car since it
had a flywheel.
I have a 73 derivative f serif block that came out of a jet boat, so not original to the boat. Assuming it came out of a manual transmission car since it
had a flywheel.
Jet boat motors typically use a manual trans flywheel.
I never said the engine was original to the jet boat. The boat was a 78 model. The VIN ID confirms it came out of a 73 Oldsmobile. My 71Cutlass is probably its third home. The E heads did not come with the motor either, but the intake numbers are consistent with the 1973 block.
March 18th, 2023 | 08:40 PM
