Enough..time to pull engine.

[Francis F.]

[Dennis O.]

Re: Enough..time to pull engine.

'68 327/350 with a Powerglide? What am I missing here?

[Roy V.]

Re: Enough..time to pull engine.

Make sure, that they don't deck the block, it's seldom needed, and you will loose the all important stamp pad numbers
Regards
Roy

[Joe L.]

Re: Enough..time to pull engine.

'68 327/350 with a Powerglide? What am I missing here?

Dennis------


No 1968 L-79 was ever originally built with ANY automatic transmission and no 1968 Corvette of any engine was ever made with a Powerglide automtaic. All 1968 Corvette automatics were THM-400.

[Edward B.]

Re: Enough..time to pull engine.

Make sure, that they don't deck the block, it's seldom needed, and you will loose the all important stamp pad numbers

It's not that important in this case since it's not numbers matching. The 3932386 block was only used in 1969 and V0826FB is a 327/235 with Powerglide from a 1969 full size car. The 3947041 heads are also 1969 only and may be original to that block. You would have to check the dates on the block and the heads to verify.

However, the 327 is a GREAT engine and really sings when built correctly. If you want to run pump gas, stick with a compression ratio of around 9.5:1 (maybe a little more if you can get premium) and try to keep the cam around a .450 lift and a 300 duration. That "should" work well with your stock Powerglide converter, but still make it peppy enough to mash it once in awhile *

* The opinions of Ed Bertrand are his alone and may not be indicative of other members or the NCRS, and should be used as general guidelines only.

Ed

[Mike E.]

Re: Enough..time to pull engine.

'68 327/350 with a Powerglide? What am I missing here?

I agree I did not think a PG was ever installed from the factory in a C3. it was the first year for the Turbo Hydra-Matic in a Corvette.

Mike

[Dennis O.]

Re: Enough..time to pull engine.

Dennis------


No 1968 L-79 was ever originally built with ANY automatic transmission and no 1968 Corvette of any engine was ever made with a Powerglide automtaic. All 1968 Corvette automatics were THM-400.

Joe,

I know all of this, having a '68 300HP with a T400 and a '67 4 sp L79. Your reply does nothing to clear up the confusion whatsoever. To put it plainly, "what in the heck is this guy working on"?


Denny

[Edward B.]

Re: Enough..time to pull engine.

To put it plainly, "what in the heck is this guy working on"?

See my post (#5) above. More than likely he's also got the Powerglide that came on that engine.

Ed

[Richard M.]

Re: Enough..time to pull engine.

Francis,

Is this '68 engine and earlier PG transmission in your '66?

[Terry D.]

Re: Enough..time to pull engine.

I'd like to know what he has done to get the engine up to par? If it was a 235hp originally, it will never run like a 350hp. Need more info, my suggestion would be save your money and buy a new crate engine in the horsepower range you want.

[Francis F.]

Re: Enough..time to pull engine.

OK ,I did not want to go there
,the right car(1966 coupe "brass hat"high option car delivered to GM zone office in 66)..with a transplanted 68/69 engine connected up to the orig alum.2 speed Basicly I am looking for the best advice to tell my engine builder what parts to spec.

[Edward B.]

Re: Enough..time to pull engine.

Francis, we need a little more info before we can give you suggestions:

1. What's your budget?
2. How's the engine running right now?
3. Are you more concerned with performance and/or reliability, or just stopping the oil leak(s)?
4. How much of the work can YOU do?
5. Are you looking to keep the car's "original" appearance, or are you open to modifications like a crate engine?
6. How much do you actually drive the car?
7. Has the engine ever been rebuilt before and if so, do you know what the current specs are?
8. Would you care if you had to put premium gas in it or do you want to go with regular?

These are all questions your rebuilder should be asking as well.

Ed

[Michael W.]

Re: Enough..time to pull engine.

Francis-

A case cast on August 13th 1968 would not have been installed in a 1968 car. 1969 production underway by then.

Casting number 393386 was used in 1969 Corvettes for both 300 and 350 HP variants, but it was also used on many other Chevrolet of the era in 302, 327 and 350 cu.in displacements.

The assembly code V0826FB indicates an engine assembled in the Flint plant on August 28th, but the original car it was installed in was a full size Chev and the engine was a 327/235 HP with 2 bbl carb and powerglide.

The heads were not used high perf. engines.

Not a 327/350 or a Corvette engine.

[Francis F.]

Re: Enough..time to pull engine.

Edward,Thanksfor the reply.
1. budget 4to6k
2.has broken a valve spring #5ex recently,runs ok cold and gets poor after a road warm up,left cal. bank smoking
3.my main concern is reliability/with a little performance.
4.as for how much i can do,i can disassemble almost anything,but i would perfer a por to put back together.
5.open to modification but retain period look where possible.Crate engine ????not sold on that as of now.
6.driven on around town,but would like to drive on trips.
7.in 1984 crosshatched cylinders,new rings,added shp cam,other than that it retains orig. specs.
8.we are currently using non ethanol #91
hope this helps, Francis

[Patrick B.]

Re: Enough..time to pull engine.

Assuming that a very late 327 still has the crankcase ventilation setup like the earlier 327's, it would make a good basis for a 10.25 compression 327-300 which would work well with a powerglide. I think Federal Mogul still sells forged flattop (4 eyebrow) pistons for a 327 and a cam with the same specs as a GM original. It would need some 462 or 461 heads, but these are pretty common. I have some cores myself. It sounds like Francis may already have aluminum 327 valve covers and intake manifold as he has described this a a 327-350. They would certainly give a period appearance. I don't think the 327-350 cam would be desireable. The 300 seems to have a lot more low rpm torque.