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ive got a 67 ss/rs Camaro that I’m doing a ground up on... finally getting to the engine and have a few questions. The motor is a numbers matching 350 with deck code ending in ms... the motor was not running when I got it (it did not come from mine but matching code for my car I found in Los Angeles) it needs work and is at a reputable builder familiar with old engines like this but this one has them stumped.
Currently it appears mostly stock (see attached pictures) with camel hump heads and street dump
My main questions are,
What bore to go with? Needs at least .020”
what pistons would you recommend?
what type of pushrods came on the car?
What should I be aware of to keep this unmolested?
I understand the engine was around 325/350 hp stock which is great for this car.
They don’t have much advice on what was original but I’d like to keep it as original and period correct as possible...
im also mating it to the original Muncie 4 speed m21
also curious if the attached intake is correct...
Not sure where you read 325-350 HP but the 350 was factory rated at 295 HP at the crank in 67. To the best of my knowledge these were not under rated engines. The 302 in the Z28 was very under rated at 290 HP. Also not sure how you are going to build an unmolested engine if you are boring it. That's like saying I want an all original survivor with a new paint job.
Do you have the number matching engine? the one that came with the car originally, that has the matching Vin number? Or do you have a number correct engine. Meaning all the casting codes are correct for when the car was made. That is two very different things. Personally I never understood why people put money in a number correct engine. Its never going to be a show car. The old saying was once the original engine is gone, all bets are off and build what you want.
Do you have an ice pack for my nuts you just kicked? lol ouch!
i remember the vin detail now... that’s right, thanks for pointing that out. We’ll that makes a couple other decisions easier now. I’d still argue that going 20 over vs putting back together a smoky pig isn’t molesting, whereas building into a stroker would be... don’t really see an option there I guess...
Anyone have suggestions on what would be a good route to go on this engine build? Maybe makes more sense now to get a lil more power out of the engine, I might have confused the z28 aluminum block sandbagged hp ratings, would be nice to get some more umpf... I’m just not real clear on what makes sense with the limitations of an older block vs a newer one that would accept roller rockers etc.
Do you have an ice pack for my nuts you just kicked? lol ouch!
i remember the vin detail now... that’s right, thanks for pointing that out. We’ll that makes a couple other decisions easier now. I’d still argue that going 20 over vs putting back together a smoky pig isn’t molesting, whereas building into a stroker would be... don’t really see an option there I guess...
Anyone have suggestions on what would be a good route to go on this engine build? Maybe makes more sense now to get a lil more power out of the engine, I might have confused the z28 aluminum block sandbagged hp ratings, would be nice to get some more umpf... I’m just not real clear on what makes sense with the limitations of an older block vs a newer one that would accept roller rockers etc.
Well it's just a small block Chevy so the sky is the limit since speed parts abound but if you want stock appearance it would mean stock intake and exhaust manifolds. That will really limit how much more power you can add. As for bore size it just needs enough to clean it up, size doesn't mater near as much as compression ratio for building more power. You can give it a little bump in compression and a mild cam upgrade to gain a few ponies but without doing headers and a better intake anything more like headwork a more aggressive cam and a bigger carb would be a waste because it won't be able to move enough air and exhaust, it has to be able to breathe to make more power.
That intake is from a 283 with a Carter 4 barrel. The correct intake uses a Quadrajet carb, with a casting # 3931575 on the intake. You mentioned the engine isn't original, MS is period correct 4 spd 350 engine for your car. The damper looks like a 350 damper. On the bores, check how much tapper you have. .030 over flat top pistons will probably be a good choice. Roller rockers will work on that engine but will probably rub stock valve covers. On that engine, I would use stock pivot ball rockers, maybe go with a roller cam to avoid cam break in. Keep it simple, those are good running engines.
67 numbers matching 350 engine rebuild
