1967 Convertible Project - Team Camaro Tech
Pro Touring Todays performance with classic style

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post #1 of 28 (permalink) Old Feb 27th, 17, 05:44 PM Thread Starter
Alan
 
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1967 Convertible Project

hey guys! Seems people were posting their builds in the pro-touring section here, and i'm looking to do that with my 1967 RS Conv so hopefully i'm in the right place.

So i'm trying to get this car going by Labor day so my dad can finally see it running and driving (bought near 20 years ago, rusted out on a trailer and it hasn't ran the entire time) for the Rod Run show in Ocean Park, WA.

I've got a few things on my mind engine wise, my choices are:
-LM7 327 currently mated to a built 4L60E (both mounted in the car and need wired in)
-BBC 427 that i got from my buddy who's dad used to run in it his 1973 camaro (512 block, used to have a tri-power setup that i wish hadn't been sold off)

Once i finalize my engine choice, my transmission options are:
-4l60e (don't have the specs, but is a new unit with beefier parts)
-the old-school 4 speed that came with the 427 (absent bellhousing)
-T56 pulled from a 94 firebird that is currently wasting away in my 91 z28.

If i go 427 then im tempted to get AFR 265's to bump power and drop weight, but then i worry about breaking parts:
-leave the rear end stock?
-somehow rebuild the stock rear end to reliably handle the BBC?
-If a beefier rear end is recommended, what are my options?


Right now, i am really wanting to go with the 427. I haven't had a BBC powered car, and since this 67 is far from numbers matching i am not worried about going that direction (i plan to beef up the chassis too). The LM7 with EFI should prove to be fun and reliable and going that route i should be closer to getting it running, but i worry about getting hung up on tuning and troubleshooting and mystery computer errors etc etc.

Here's the car, hiding under all the mess. Spring cleaning is due!
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post #2 of 28 (permalink) Old Feb 27th, 17, 06:08 PM Thread Starter
Alan
 
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Re: 1967 Convertible Project

Im slightly fascinated by the 427, here's some numbers i pulled off of it...

Block:
3963512 1969-71 427/454

Heads:

3917215 1967-69 396/427 closed chamber 100.9cc
3931063 1968-70 396/427 closed chamber 100.9cc

Intake:
Edelbrock Performer 2.0

heres a couple pics of the engine
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post #3 of 28 (permalink) Old Feb 28th, 17, 07:56 AM
DT
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Re: 1967 Convertible Project

Going Pro-Touring ??? Sell that 427 BBC and install an LS 3 525 and don't look back.

1969 X66 396 LeMans Blue, M20, 373 (Sold)
1969 Convertible LS3 TKO 600, 373
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post #4 of 28 (permalink) Old Feb 28th, 17, 12:51 PM Thread Starter
Alan
 
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Re: 1967 Convertible Project

Never heard of an LS3 525, but i guess anything is possible!

The 427 may not fit the typical pro-touring combo, but I have it on hand and i'm sure i would be happy with it once it was all dialed in. Still debating though, i can probably get that LM7 up and running for cheaper and quicker and save the 427 for a later day. Also the LM7 was a build my dad worked on, he would be excited to get to see how it turned out.
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post #5 of 28 (permalink) Old Mar 1st, 17, 02:52 AM
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Re: 1967 Convertible Project

So as not to confuse people and stop the 'debate' .. this thread may need to move over to 'build' Projects' ?

Steve

Steve
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post #6 of 28 (permalink) Old Mar 1st, 17, 03:18 AM
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Re: 1967 Convertible Project

If I had all those current options, I'd run the 427/T-56/3:73(playing it safe) ratio in the rear or 4:10 if you really wanna have some fun.

'68 Camaro with RS conversion
Moser 9" with 4:11
Martz Chassis 4-link and Front Sub-frame
Tremec T-56 Magnum 6 speed
572 BB - CM Engines
Wilwood 6 piston front and 4 piston rear disc
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post #7 of 28 (permalink) Old Mar 1st, 17, 03:21 AM
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Re: 1967 Convertible Project

Quote:
Originally Posted by DT View Post
Going Pro-Touring ??? Sell that 427 BBC and install an LS 3 525 and don't look back.
Everyone is going LS - While they do get better gas mileage and are a bit more reliable to an extent, there is nothing quite like the feel and sound of an old school big block period.

'68 Camaro with RS conversion
Moser 9" with 4:11
Martz Chassis 4-link and Front Sub-frame
Tremec T-56 Magnum 6 speed
572 BB - CM Engines
Wilwood 6 piston front and 4 piston rear disc
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post #8 of 28 (permalink) Old Mar 1st, 17, 04:42 AM
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Re: 1967 Convertible Project

Go with the 427 they are becoming more rare and old school is cool school!!
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post #9 of 28 (permalink) Old Mar 1st, 17, 05:40 AM
DT
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Re: 1967 Convertible Project

I am actually Old School LOL. I have a BBC in my X66 car. IMHO Old School is Old school. Pro Touring with an Old school power plant I love my BBC don't get me wrong, the car is set up Old School. Keep in mind 10 MPG, occasional oil leaks, hard starts, running hot, are things of the past with an LS. Just my thoughts.

1969 X66 396 LeMans Blue, M20, 373 (Sold)
1969 Convertible LS3 TKO 600, 373
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post #10 of 28 (permalink) Old Mar 1st, 17, 02:51 PM
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Steve
 
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Re: 1967 Convertible Project

Quote:
Originally Posted by The Camaro Guy View Post
Go with the 427 they are becoming more rare and old school is cool school!!
Agreed ... LS 427

All kidding aside, if you don't want to re-mortgage the house for some serious LS power a BBC is awesome, my 496 was a ton of fun and you cant go wrong

Cheers
Steve

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post #11 of 28 (permalink) Old Mar 8th, 17, 03:24 PM Thread Starter
Alan
 
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Re: 1967 Convertible Project

So i've decided to run the 427, its heavier but I haven't had a bbc and this seems like a good time to jump in both feet So i took it to the shop today, Dale Maslen Machine in forest grove. Dale is an older guy and says this is the first BBC he's handled in 4 years. He had some stories and pics of his own 427 '69 el camino that he showed me, doesn't have it anymore but it looked sharp and said it launched real hard. He liked the 427's over the 454's due to internal balancing and the quick revs. He pointed out my engine had a steel crank and forged rods. The crank he says looks ground out and doesn't have the cross drilled hole so its probably from a 396. There's plenty of work to get it ready to go and i expect him to find more issues as he dives into it. Pistons are already 30 over, heads will pretty much stay untouched except normal prep work. I wanted him to unshroud the valves but he said there isn't room to work with due to water jackets. I wouldn't mind getting some aluminum heads on there just for weight concerns but unless i can find a smokin deal then I'll stick to what i have so i can splurge in other places.

Transmission-wise I am nixing the t56 idea so i won't have to redo alot of work on the '91 Z28 so i'm left with a 4l60E, a '96 Yukon transmission, or this muncie that came with the engine. Its marked P0A28A (muncie, 1970, january 28th, m20) and the case # reads "392566" (it does not read 3925660 as listed everywhere on the web, so im assuming the zero was added later in production). So that gives me gear ratios of 2.52, 1.88, 1.47, 1.00 if my web-sleuthing skills are on par. I verified it has 10 spline input and 27 spine output shafts. If i go with this one then i have to get bellhousing and peripherals, i have no fork or clutch etc but my shed is a mess so those might still be hiding.

For the other transmissions, i have yet to find out if they will bolt directly to a bbc (i expect to find they probably do). They are also automatics, and i would be afraid of an ill-timed upshift causing a spin out (just ask my brother what happened to his 35th Anniversary TA Convertible, may it RIP!). So i'm leaning towards the muncie right now, and perhaps throwing a GV overdrive behind it for highway speeds.

Last edited by alans67rs; Mar 8th, 17 at 03:37 PM.
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post #12 of 28 (permalink) Old Mar 9th, 17, 04:15 AM
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Re: 1967 Convertible Project

I'm not sure how much HP you are planning on running but a bone stock 4L60E won't handle a ton without potential issues IMO. You also need to have a controller for that. The Muncie would be fun for an old school approach but a more modern manual would be much better. Just my .02.
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post #13 of 28 (permalink) Old Mar 9th, 17, 07:12 AM
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Re: 1967 Convertible Project

Quote:
Originally Posted by gphusker View Post
I'm not sure how much HP you are planning on running but a bone stock 4L60E won't handle a ton without potential issues IMO. You also need to have a controller for that. The Muncie would be fun for an old school approach but a more modern manual would be much better. Just my .02.
Agree! Putting the TKO in was one of the better things I did. So much nicer to drive/play around with.
Whatever you do... have a plan and stick to it. You'll save so much money in the long run no matter what parts are being used.
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post #14 of 28 (permalink) Old Mar 9th, 17, 08:43 AM
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Re: 1967 Convertible Project

Quote:
Originally Posted by ROBS6T8 View Post
Agree! Putting the TKO in was one of the better things I did. So much nicer to drive/play around with.
Whatever you do... have a plan and stick to it. You'll save so much money in the long run no matter what parts are being used.

I think if he were to get a 4L70E he would probably be ok assuming he would be at 500hp or lower. Those have a bunch of hardened parts in them and can take some additional abuse before exploding.

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post #15 of 28 (permalink) Old Mar 15th, 17, 10:46 AM Thread Starter
Alan
 
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Re: 1967 Convertible Project

So I decided to get another t56, picked up a "006" version with the steep first gear. It won't go in the 67 but will be swapped out for the normal t56 that's in my 91 Z28. I'm a big fan of these transmissions since putting one into my 91, im hoping it will survive behind the BBC in the '67.

Also, I was lucky enough to find a local guy with a 12 bolt rear end with the correct width for the 67, positrac and "35 10" (3.5:1) gears, picked it up yesterday. I can't make the #'s out that well on the passenger axle tube but it im guessing its a "BS" stamp. Only downside on that is the perches had been relocated to fit a 2nd gen, I'll need to either use adapter plates or cut n weld it back.

Now I need to get the necessary parts together for the 6 speed to mate up, only have the transmission and a normal bbc flywheel and a pedal assy from a 72 nova.
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