Technical 350 CHEVY CRATE MOTOR QUESTIONS

We bought a 260 horse 350 crate of the family farm truck about 20 years ago - In stalled in a 1978 Chevy 4X4 long box - for the money - good engine. Never any problems pulling loads much to heavy. I am a Ford guy and really wish Ford had as good of crate engine program as Chevy.

 

never got a tape measure out and measured them but id say they are 2 inch. the 2 inch pipes that were on my 51 that those manifolds came from were about a perfect match. I was keeping my eyes open for 55 56 manifolds but now I hope these fit my setup. I already have them and they flow better than the 55 56 ones for sure.

 

Thanks. I am restoring my Dad's 1939 Ford. It has a 1965 Chevy 327 with the 2 inch rams horns manufolds and a 4 speed - open drive shaft back to a Columbia 2 speed rear. The steering box is stock 1939 Ford. the Z bar for the 4 speed and stock steering box makes the head pipes really tight. I am considering a 525 Saginaw or Vega box and perhaps cable to activate the clutch - hoping the 2.5 inch ram heads on the shelf will then clear and work. I want to keep this car with a mid 1960's theme - might whimp out with Sanderson CC4 tube headers that will clear and boost performance.

 

I know regular Ram Horns don't clear the box very well. They didn't on my 39 and the person that put the 283 in it made an interesting modification to them to make them clear. The Driver side manifold dumped right on top of the steering box.

 

Thanks for this post - this made my afternoon. Got to love the high tech exhaust.

 

And it was all Aluminum pipe all the way to the rear bumper!

 

^lolololololol^


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Well, I guess I haven't seen it all..........D

 

This is a crate in one of Hilton's builds. Can't be that bad. I got one too.


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nice - how did you actuate the clutch? Cable or linkage?

 

These are 2" outlet manifolds. The only factory 2½" manifolds for SBC were 327/300 HP (and up) ram-horn style in 1963/64.

 

Thanks, it's a hydraulic throw out bearing made by Tilton series 6000. Tranny is a new T-5z Ford. Tail housing is a new casting by Modern Driveline made in the US moves the shifter forward. In a 31 coupe. Got the whole set up from them too. (Bell, clutch, etc).



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I know a gent who took his 265 exhaust manifolds off his 1956 Chevy 265, 2 bbl, back in 1960.
He still has his manifolds in his workshop.

 

I have a cast iron 2 bbl manifold and Rochester if you need it

 

OK, I forgot about the emissions and crankcase ventilation stuff. Do I have to be concerned with emissions and crankcase ventilation? For example, can I put a '57 2bbl intake on a modern crate motor without any emissions or ventilation problems? "Plug and play," so to speak?

 

Depends on which engine you are buying. Check on the type of heads. The Vortec center bolt valve cover style head cannot use the old intakes and manifolds. They are '96 to 2001 and have a D shaped exhaust port.

 

265 manifolds may be a bit restrictive however that may work as a governor ! and save the transmission a bit longer ,the small block to early driveline makes the car so much more drivable in my opinion I have early fords with flathead ,I like looking at the flathead one and driving the chevy powered one

 

there is some swept back manifolds from the early 70s that are swept back rams horns swap sides on the motor and they clear the steering ,believe me, have been on my 35 for many years

 

I installed a chevy 350 /300 hp 4 bolt main 9 to 1 compression engine in my 1940 chevy.

 

I'd be interested in those if the were available. PM me if he wouldnt mind letting them go.

 

I have those on my car. Driver side is a '65 or '68 Impala, passenger side is a later truck manifold made by Dorman, that manifold is 674-199. The driver side is 674-201 but has no provision to mount an alternator. If you like the rear-exit Chevelle type, look at their 674-197 & 674-202 manifolds.

 

Make sure you tell everyone its a Corvette 327 ,not just an ordinary chevy one.

 

here's the 350 crate in my coupe. Unfortuntely, #8 sucks oil like it's out of style so, we are putting the intake, carbs, headers and L79cam in a balanced 383 short block I snagged right.. The heads will be Edelbrock aluminum 2.02 valve heads w/64cc chambers......Ought to be bitchin and go like stink!!!!

 

Just for curiosity, take a look at the intake gasket near that oiling cylinder. I had one 400 do the same cyl, and it was sucking a tiny bit of air at the top, but also sucking oil from the underside of the gasket, (oil from the valley)

 

It's a cracked oil ring....

 

The linkage is on the wrong side, on my '47 flathead I ran a 2 jet backwards to get the linkage to line up. Ran great with no mods to the linkage and then put the 94 back on when I fixed it.

 

Used a set of the "logs" on a friends '50 merc...fit just fine. They ran those into the 70's, so they're cheap and easy to find unlike the "ram horns" or the 265's.

 

The front feed 2 jets had a 1" wrench size filter housing nut (for the larger motors 350+) and the side feed (or small front feed without the 1" nut) was for the smaller motors.

 

So if you get the pre-vortec crate SBC do you get the same combustion chambers, ports etc. as '60s SBC or are they a later style?

 

Yes. May not be the same sizes but they will be the same shape. The heads will have the same bolt pattern for the intake manifold as the old sbc motors.