Did GM installl the 327/325 hp engine in Camaros in '68 - Team Camaro Tech
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post #1 of 18 (permalink) Old Sep 16th, 08, 11:27 AM Thread Starter
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Did GM installl the 327/325 hp engine in Camaros in '68

I had a friend in 1968, that had a '68 Chevelle with a 327ci/325 hp engine from the factory. That was a very strong running engine in his Chevelle, and ran with the 396 ci engines that were much more common. I've seen very few of these engines over the years, but am curious if they found their way into '68 Camaro?? Anyone know?

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post #2 of 18 (permalink) Old Sep 16th, 08, 12:05 PM
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Cool Re: Did GM installl the 327/325 hp engine in Camaros in '68

None were factory installed.
But, back-in-the-day, the '151' Cam, some 2.02 heads and a Holley carb/intake (factory and aftermarket styles) were popular swaps/upgrades to get improved performance out of "little" 210 & 275HP 327's.
Few went as far as to swap out the pistons to the higher comp. 325HP type versions unless a full overhaul was needed ...
With a good set of headers and a few other performance upgrades and these little 327's were tough to beat on the street

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post #3 of 18 (permalink) Old Sep 16th, 08, 12:10 PM Thread Starter
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

That 327/325 engine would be *perfect* for the Camaro.... *S* IMO, much better than a 396....

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post #4 of 18 (permalink) Old Sep 16th, 08, 12:29 PM
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Thumbs up Re: Did GM installl the 327/325 hp engine in Camaros in '68

I ran a bored '67 'Vette 327/350 in a '62 Impala in the late 60's that ran very low 13's (did a high 12 once at Lion's - but "everyone" knows their clocks were 'fast' ) in street trim.
The engine was a hoot, with fantastic throttle response, and would cruise all over the place with my 3.90 rear-gears without a wimper
Still have the original Valve Covers from the 'vette motor and a Holley and an Intake (C3BX) I ran off it ...

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
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post #5 of 18 (permalink) Old Sep 16th, 08, 01:37 PM Thread Starter
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

I've got an original '69 Corvette roadster (41K miles) with the 350/350 (a similar engine).. I like it. the hydraulic cam makes it easily maintainable, but it's also got a rump, and will run... but I really like that '68 327/325. partly due to it's rarity..

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post #6 of 18 (permalink) Old Sep 16th, 08, 03:21 PM
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

Canadian Pontiac's could be had with the 210, 295 and 325Hp 327's. From what I have found throughout the years with my Dad running Pontiac's in the 60's that most CDN Pontiac's and NOT Chev had the 1.94 / 1.55 Fuelie Heads whether they were 2 or 4 BBL's. Of course back then you could order a Spread Bore Holley Dp direct from a GM Dealer which could be installed by either the Dealer or on the Assembly Line if the car was ordered. Whatever happened to that GM Dealer Special Order practice - siish!

I believe the 325Hp 327 was the L79 Option in 68.

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post #7 of 18 (permalink) Old Sep 16th, 08, 04:04 PM Thread Starter
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

a '68 Firebird with the 327/325 would be a very nice package as well. Those Holley spreadbores are great carbs... I've got one somewhere if I could find it

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post #8 of 18 (permalink) Old Sep 16th, 08, 05:44 PM
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

What cam does a 327/325 use? What CR? Is it a tuned down 327/350 or, a tuned up 327/300?

'67 rs - ordered new by my Grandfather
327 L30, K-K, Deluxe int, tach & gauges, 12 bolt posi, 4 speed.
the Melrose rs - L30 327/275hp
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post #9 of 18 (permalink) Old Sep 17th, 08, 02:10 PM
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

Quote:
Originally Posted by Melrose RS View Post
What cam does a 327/325 use? ...
... Is it a tuned down 327/350 or, a tuned up 327/300?
The Camaro 327's- both base (210) and the RPO-L30 (275) HP units used the venerable GM #3896929 cam.
The 327/300HP units also used this same cam.
The differences in HP output are due to adjustments in Comp. Ratio, Heads and Intake/Carb combinations as well as Distributor calibration in the various engines (note: some adjustment in lower end and other common internal/external parts were also upgraded as needed.)

The 327/325 and 350HP units used the HP-Hydraulic cam GM #386151.
This was an excellent street-performance cam for many years and responded well to most of the common early Hot-Rodding modifications - mild porting, aftermarket intake, headers, good exhaust ('glass-packs' ), raised compression ratios and others were common modifications back-in-the-day to get max. performance out of these little engines.
Most the present cam suppliers have a version of this cam still available.

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
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post #10 of 18 (permalink) Old Sep 17th, 08, 02:43 PM Thread Starter
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

Quote:
Originally Posted by Melrose RS View Post
What cam does a 327/325 use? What CR? Is it a tuned down 327/350 or, a tuned up 327/300?
The engine designation (L79) is the same for the 327/350hp and the 327/325 hp, so they are essentially the same engine. 68 Corvettes with the L79 were rated 327/350hp, whereas the Chevelle L79's were rated at 325 hp. Sometimes there were some differences in exhaust system; other times GM just wanted the corvette engines to be rated higher..

All the L79's had higher comp than the lower hp 327's, they had high rise intakes, holley carbs, and the good 350 hp cam.... Can anyone be more specific than this? I've been looking for written detailed specs, but haven't found them as yet...

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post #11 of 18 (permalink) Old Sep 17th, 08, 02:45 PM Thread Starter
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

Hmmmmm.. now I'm wondering if I'm right about this; the early versions had Aluminum high rise intakes and Holley's. . but the later ones *may* have had quadrajets.. (as my '69 350/350hp does...)?? We need details from the experts. *G*

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post #12 of 18 (permalink) Old Sep 17th, 08, 03:03 PM
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

Quote:
Originally Posted by Vintage 68 View Post
The Camaro 327's- both base (210) and the RPO-L30 (275) HP units used the venerable GM #3896929 cam.
The 327/300HP units also used this same cam.
The differences in HP output are due to adjustments in Comp. Ratio, Heads and Intake/Carb combinations as well as Distributor calibration in the various engines (note: some adjustment in lower end and other common internal/external parts were also upgraded as needed.)

The 327/325 and 350HP units used the HP-Hydraulic cam GM #386151.
This was an excellent street-performance cam for many years and responded well to most of the common early Hot-Rodding modifications - mild porting, aftermarket intake, headers, good exhaust ('glass-packs' ), raised compression ratios and others were common modifications back-in-the-day to get max. performance out of these little engines.
Most the present cam suppliers have a version of this cam still available.
I had a 327/210 and have a 327/275, both with stock cams. The 327/275 always sounded better idling. Could CR, heads, intake, and dual exhaust, account for this? I always assumed the cams were different.

'67 rs - ordered new by my Grandfather
327 L30, K-K, Deluxe int, tach & gauges, 12 bolt posi, 4 speed.
the Melrose rs - L30 327/275hp
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post #13 of 18 (permalink) Old Sep 17th, 08, 07:43 PM
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

i had a 68 chevelle Malibu with the 327 / 325 hp with a 4 speed tranny and a 12 bolt possi rear. i had no idea what i was buying at the time, it was 1977 and all i knew was this guy had a chevelle with a 4 seeed for sale. i took the car for a ride and bought the car for 400 dollars. quarters were shot already but the car ran strong. an older brother of a Friend of mine with a black 69 rs camaro looked at the car and saw the M heads on it and determined it was a 325 hp motor . the car sat for a while because i brought a 70 skylark custom with buckets and a console and factory rallies in better shape. i ended up parting the motor and tranny out to a Friend who brought a 77 monza mirage and almost immediately blew the 305 and rebuilt the 327 and the 4 speed and put it in the monza. i remember the Malibu being light blue with a black vinyl roof and black bucket seats and a console and rosewood wheel . another car that i wished i kept.
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post #14 of 18 (permalink) Old Sep 17th, 08, 09:44 PM
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Re: Did GM installl the 327/325 hp engine in Camaros in '68

68 L79 engines had Q-Jets and cast iron intakes. This engine was available in Chevelles Novas and El Caminos in 68 and only came with a manual trans. In a Corvette in 68 the L79 was rated at 350 horse and only available in manual trans also
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post #15 of 18 (permalink) Old Sep 18th, 08, 09:42 AM
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Wink Re: Did GM installl the 327/325 hp engine in Camaros in '68

Quote:
Originally Posted by Melrose RS View Post
I had a 327/210 and have a 327/275, both with stock cams. The 327/275 always sounded better idling. Could CR, heads, intake, and dual exhaust, account for this? I always assumed the cams were different.
The cams were the same
The difference was the heads, compression, intake and exhaust system

Quote:
Originally Posted by 69Z28-RS View Post
The engine designation (L79) is the same for the 327/350hp and the 327/325 hp, so they are essentially the same engine. 68 Corvettes with the L79 were rated 327/350hp, whereas the Chevelle L79's were rated at 325 hp. ...
... GM just wanted the corvette engines to be rated higher ...
While GM 'liked' to have the 'Vette differenciated by being the "King" in HP and Performance of the Chevrolet lines - there are multiple examples of that not really being the case ...
There were specific tuning, calibration of carburation and set-up differences in the two engines to get the rated (SAE 'Gross') HP/Torque figures that were published for each engine. As an example of carburation differences, a '67 Chevelle 327/325 used a Holley #3807 (4150 type) while the same year Corvette 327/350 used a Holley #3810/14 (4160 type) - the two different carbs and their calibrations were just one of many slightly different tuning calibrations done to these engines.
There were also cases where engines were purposely given 'odd' published ratings to satisfy certain GM policies designed to meet formulas for production vehicles. The "Z's" are an excellent example of this

Quote:
Originally Posted by 69Z28-RS View Post
... Can anyone be more specific than this? I've been looking for written detailed specs, but haven't found them as yet...
Can you be more specific
There are bunches of published and web sources for configuration spec.s on these various engines. The "Mortec" web. site is an excellent source of much of this info. Link - http://www.mortec.com/ Many of the various 'Corvette' sites also have data in their pages and links. ALWAYS double check one site against several other sources, incorrect data tends to get established in some and spread by some others ...
The compression ratios varied quite a bit on the 327 over the years. In 1967, and for most '68's, the 327 came in 8.75:1 CR for the 210HP, 10:1 for the 275 and 300HP unnits and 11:1 for the 325 and 350HP engines.
If you can give a year, model and state-of-tune (HP) I, and others, can probably give you the majority of the factory configuration spec.s for it.

Hope some of this helps;
John

ps: if you PM 'pdq67' he will give you all kinds of spec.s on the 'little' 327's AND 'stories' to go with them
j/k - Luv Ya Paul

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
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