Radiator for 1970 GS Stage 1 4 speed

Discussion in 'Parts wanted' started by Weisguy184, May 19, 2018.

  1. Weisguy184

    Weisguy184 Well-Known Member

    I am looking for a radiator for my 1970 GS Stage 1 4 speed non A/C car. I believe the tank codes should be CF passenger side and IA drivers side. Please correct me if I am wrong. My car is a October build. Thanks, Marc.
  2. Weisguy184

    Weisguy184 Well-Known Member

    The radiator tag should be SJ. Thanks for the help! Marc
  3. Dano

    Dano Platinum Level Contributor

    That'll be a tough one. The early cars, and I don't know the exact date of the switchover, didn't have a provision for the trans cooler. At some point, they started using the automatic radiators in the manual cars and putting plugs in the line fittings. I know by Dec. '69 or so the switchover had been made.

    There are some threads on here about all this that have more detail and pics of the correct plug. Maybe there are enough on here with original cars (or good memories) that we could come pretty close to the date or maybe Duane will chime in. I believe he may have posted in one of the other threads.

    My Stage 1 4-sp. body is a 10E, so early Nov. assy. plant build and I have one in there (tanks/tag as you specified) with the fittings, but I don't know that it's correct. Obviously the pass. side tank on the early cars wouldn't be CF and I assume the tag wouldn't be SJ. I don't recall off hand what it should be. I'd also think that from a judging standpoint assuming that's at least part of the driving force here, that similar to the pointed lens/clear overflow/plastic radiator top switchover, that for an October car that either radiator would be accepted as correct barring any further proof of an actual switchover date and even then, who's to say that a week or two later they didn't find some more of the old style and used them up.

    On another recent thread, there was a late January car with a supposed original plastic radiator top which would certainly be out of the commonly accepted switchover date of early January.
  4. Dano

    Dano Platinum Level Contributor

    I was just checking out your Sloan Docs. Mine was also ordered with gauges and a clock. I can only assume that the intention was a day-2 Sun tach on the steering column. Someone replaced the clock with a tach @ some point and despite being an originalist/purist (maybe to a fault), a correct early (tall number) tach may be one deviation I may make, in addition possibly to 15x7 chrome wheels.

    What are you doing on yours?
  5. Weisguy184

    Weisguy184 Well-Known Member

    The previous owner replaced the clock with a tach and I just had it rebuilt and am leaving it in the car. I don’t have the original wheels so I bought a set of 15” reproduction wheels. The previous owner also made a couple of other changes. He installed factory correct power front disc brakes, AM/FM Radio and power windows all correct for the car. All are tough calls. I just got the car out of paint and JW will have my motor done at the end of the month. He found a date correct block for me and I have all of the correct parts for the motor except the choke thermostat(I have a line on one from member that will be available late June). Mark Northcutt rebuilt the carburator and Todd Miller restored the distributor and install single wire electronic ignition. I have a clock for the car that will remain on the shelf and I have a line on the correct wheels which will stay there as well. I am still debating the windows, radio and brakes... The car has the numbers matching transmission. I have the corrcct rear end but in need new 3.64 gears. I am waiting for Fabcraft to make another production run which should be soon. what do you think?
  6. Dano

    Dano Platinum Level Contributor

    All tough calls, especially PW in a convertible. I'd never really thought about it until TimR mentioned how he can literally flip the latches and with one hand on the top switch and the other on the 4 pw switches, have the whole thing opened up and windows down @ a stoplight. I'd never owned a vert & had just bought a '71 GS convertible sight unseen when he mentioned that and I was relieved to see the lady who special ordered it (she'd traded in a '68 Skylark convertible) checked off the PW box - I'd have definitely considered adding it. Unfortunately, she didn't want "the big engine" or a 4-sp. but otherwise did a pretty darn good job with options and colors and again other than possibly the tach (orig. gauges/Rallye clock) & wheels (orig. 14" chrome), possibly deleting the body side mldg. & front bumper guards, and I'm seriously considering a 200R4, it'll be as orig.

    Now the presence of PW is the 1st thing I look @ on any convertible. I recently saw a pretty low option Skylark convertible that even had PW.

    I guess on the PW, PDB & radio, it depends on your plans for the car. None are heinous or permanent and maybe we're getting too old to worry about it & with it all being correct for the car idk if any would really hurt the value exc. to a serious purist although a '70 Stage 1 4-sp. convertible is of course the pinnacle of GS's wrt value. It's also not like these are Bloomington Gold Corvettes and if you'll be driving it, PW & PDB are nice options that fit with the car and the correct radio certainly wouldn't be out of place. Also, I think on an NOM car, there is a certain amount of extra liberty that can be exercised. They're meant to drive & have fun with. I sold an NOM Stage 1 4-sp. (Brett Slater's black car) to buy mine and although I know the engine (built by Nick Serwo) is as bulletproof as can be, I still cringe at winding it up to 5500.

    Mine (hardtop) is pretty easy wrt options when restoring as I bought it specifically because of how it was optioned (or lack thereof) and I do plan on driving it. It's a stripper more or less (Stage 1, 4-sp., PDB, AM/FM, remote mirror, Tinted glass, Convenience Group, gauges/clock, Rallye Steering Wheel, SCO 14" RWL tires w/chrome wheels & upper peak molding). Sherwood Green w/green vinyl top & pearl white buckets & I happen to really like green cars. No PS, A/C, consolette, F-41 (I'd love to add that), etc. and I also have a thing for factory manual steering cars (to me, along with no radio are the ultimate stripper "non-options"). It's optioned almost identically to one I had years ago that I didn't really want to sell. Only real differences were the top & interior colors (Brown & Burnished Saddle) & the old one had a consolette & F-41.

    I have another stripper ('70 350 4-sp.) that has even less options than the Stage 1 and has a base straight bench "Skylark" interior and I'm considering going with a manual mirror and radio delete (orig. AM, but I always wanted a radio delete car and it certainly fits the spirit of this one perfectly), but will most likely go with the orig. Deluxe wheel covers (volcanos) and orig. deluxe steering wheel although I've even considered dog dish &/or a base "batwing" steering wheel too. Other than those 4 options, it only has 4-sp., tinted windshield (only), tach/gauges, performance axle ratio w/posi, and trailer tow (which along w/ the 4-sp. & perf. axle got it a 3.64 rear - prob. the only '70 GS 350 that came with one) plus of all things, a painted top (two-tone green). Someone knew exactly what they were ordering and beteeen the low weight from lack of options, the '70 315 HP, and the 3.64, it was arguably the quickest production GS 350 ever made.

    Anyway, sorry to ramble. Looking forward to seeing the progress and let me know what you decide on the options - Sounds like you're getting close!
  7. Weisguy184

    Weisguy184 Well-Known Member

    The more I think about it the more I feel leaving the options on the car makes sense. I plan to drive it. I have had several convertibles over the years and you are right power windows are really nice. JW has been kidding me that I am making it to nice to drive. This is my dream car and I have no plans to sell it. I am not concerned that if I took it to a points show it would be scored down and the purists would question my choices. Like Frank says “I did it my way”. I would only take it to share with others and find out what I could do to make the car more correct. I too am a bit of a purist.
  8. DBS

    DBS Well-Known Member

    That's the problem - It's hard not to make them "too nice to drive" but they are meant to be driven. Many seem to find having a trailer queen to not be enjoyable either. PS - I think you have many if not most on here's "deam car" - congratulations on being one of the 67 (or however many are left):).

    I actually (almost) never wanted a convertible. Wanted one after attending my 1st Nationals in '85. I cut High school to go 600+ miles to BG with my girlfriend - She had a '66 Skylark convertible. I'm sure our parents were thrilled. I rolled my '72 GS 350 on the way back from there and first thing after I said after we got out (landed on the roof) was "thank goodness we didn't have a convertible." But I finally relented 30+ years later.

    I don't think you'll look back on keeping those options nor do I think it would be deducted if you showed it or that the purists would really look down on it. Unless someone is looking @ the docs, they'll never know anyway.
  9. Weisguy184

    Weisguy184 Well-Known Member

  10. Weisguy184

    Weisguy184 Well-Known Member

  11. Black69Judge

    Black69Judge Well-Known Member

    P7070483.JPG P7070484.JPG P7070453.JPG P7070486.JPG P7070497.JPG P7070482.JPG P7070483.JPG Hi
    I have IF = 4 row and IA = 3 row drivers tanks ....... kinda bumped up
    X J = 4 core manual passenger HD cooling AC manual trans tank .... that is really nice "J" date of Sep
    they say " I '" was not used

    I was just researching last night .... It should have a PA code tag ...I have no tag musta been recored at one time
    these are from a Pontiac .... I dont know if Buicks the same .... the month is on the fill tank and the year is on the small code tag on the end of the assembly plant code

    found alot of good info and matching codes on some Chevelle sites at 3am yesterday

    I have no idea of value ..I see recores selling for 1000 .....plus ....

    an original harrison PA w tag 1400 for a 70 GTO ....

    I will probably be ebayin em this upcoming week when I do some more late night research ...


    there is much debate about radiators all over the board .... I am only replying because I hope
    you do your home work and others bring out info on their original radiators to hellp us

    Attached Files:

    Last edited: Jul 8, 2018
  12. Weisguy184

    Weisguy184 Well-Known Member

    Thanks Scott, I will do some more research. Marc
  13. flynbuick

    flynbuick Super Moderator Staff Member

    No Buicks are different. He needs CF large and IA small tanks for a non AC 70 Stage 1. The tag I recall is SJ. The Parts Place used one of my originals to reproduce it. Check to see if my memory is correct.
  14. BrianTrick

    BrianTrick Brian Trick

    I bought one of the reproduction Harrison’s from The Parts Place,and it is a nice piece. They make them with and without the cooler ports.
    Dano and Brett Slater like this.
  15. Brett Slater

    Brett Slater Super Moderator Staff Member

    That's good to know.

    How about the clip that affixes to the side of the tank for the upper overflow hose? Did you get that as well?
  16. BrianTrick

    BrianTrick Brian Trick

    494782E3-5279-4B27-AF0A-A4ADEF5763C0.jpeg 29C2BC42-22B1-4730-9B3C-2DE84C64923C.jpeg No clips or tags. Do you mean this clip?
  17. Brett Slater

    Brett Slater Super Moderator Staff Member

    The smaller one on the left, yes.

    As I'm sure you're aware, that's often discarded, overlooked or just rots out. I saw TPP had them and was wondering if anyone had bought/used one.

    There's a good chance Marc may need one for his car.
  18. BrianTrick

    BrianTrick Brian Trick

    922621C2-AC40-4E3F-8878-2D07743B777F.jpeg Look like this installed. The previous picture,with the tags were from a different radiator,but exact same tags. Notice plugs in original radiator.
  19. Brett Slater

    Brett Slater Super Moderator Staff Member

    I wonder what a good source would be for the plugs?

    I was lucky enough to find a usable clip from gsfred.

  20. BrianTrick

    BrianTrick Brian Trick

    Inline Tube sells them There are two sizes,depending on the year.
    TorqueMonster1 and Brett Slater like this.

Share This Page