The Chassis Shop

st-300 transmission

feeds@yuku.com (aaronheintz123) — Wed, 25 Nov 2009 18:42:27 GMT

i am going to rebuild the 2 speed transmission and was wondering if anyone knows if anyone
makes performance clutches or if i can use pg clutches

motor mount perches, the triangular pieces

feeds@yuku.com (66sprintrag) — Fri, 23 Oct 2009 14:54:36 GMT

Are the motor mount frame perches proprietary to the OHC 6? I'm building up my '66 frame and they're missing. I've seen a few pairs on ebay, but of course they are all V8's.

Also, this convertible frame had no transmission cross-member with it, so I picked one up from a buddy of mine. It is a convertible cross-member, but it's from a '68. The repro suppliers have two crossmembers. One for '64-'67, another for '68-'72. Does...

Aftermarket clutch pedal kit doesn't fit.

feeds@yuku.com (flyinbrian) — Wed, 07 Oct 2009 17:15:54 GMT

I've got a 69 Firebird and I have installed an OHC 6 with a T-5. The car was originally an automatic with a V8. I bought a clutch and brake pedal set new but the hole in the under dash mounting bracket they attach to is too small for the pin used to mount them. I thought the bracket was universal and would take an automatic or manual pedal setup. Is this a simple job of redrilling the bracket to a larger size or did GM use a different mounting bracket for manuals?
Brian

Tire size

feeds@yuku.com (shifterkart26) — Sun, 16 Aug 2009 18:46:17 GMT

Has anyone had any issues with using Firestone wide oval G70-14s on Rally I rims on a 66 Tempest? I.E. rubbing, interference, etc.Thanks

Stalling

feeds@yuku.com (Jeff Branch) — Sat, 18 Jul 2009 12:20:31 GMT

I have a 1967 Tempest Sports Coupe with 230 1bbl, air cooled ST300, and 2.56 rear end. Horrible drivetrain for an OHC6! When I bought the car it didn't run great, but well enough. Now when driving it it will stall at stops. The car runs fine at idle in Park or Neutral. I have to put it in Neutral as I'm slowing down with my food on the gas. Also, in forward or reverse, you have to really give it gas to move, and if you let off it will stall. It seems that there is something in the...

OHC motor mounts

feeds@yuku.com (flyinbrian) — Sat, 21 Mar 2009 11:30:08 GMT

Hi
I'm running into the same problem I had when I needed a harmonic balancer. I tried to buy new motor mounts and none of the auto parts stores have a listing for the right one. Is there a part # I can use or is this another OHC only item that is no longer made? Any help is appreciated.
Thanks--Brian

Oil pressure

feeds@yuku.com (billybob) — Wed, 11 Mar 2009 13:10:11 GMT

My OHC Six has a strange oil pressure problem. I was wondering if anybody else experienced this and what they did to remedy it. I hold great oil pressure, 50psi, till @ highway speeds I turn to the right or there is a dip in the road. It drops and then comes right back. It has plenty of oil, six quarts. I need help!

sagging back end

feeds@yuku.com (DICKBURNS6fke) — Wed, 04 Feb 2009 20:22:14 GMT

help i have a sagging rear end new convertable springs and shocks not much help

New guy needs T5 tranny conversion information

feeds@yuku.com (flyinbrian) — Wed, 17 Sep 2008 16:29:05 GMT

I bought a basket case 69 Firebird that had no engine or trans. I have a rebuilt 68 OHC with the 3 speed manual that I bought afterwards. I know you guys have covered this but I can't find the information on here now. What is the simplest, easiest way to change to the 5 speed. I'm not building a race car and my philosophy is " Simple is better ". I don't have the pedals yet or a shifter. I would like to reuse the new clutch and pressure plate already on the engine...

WS6 PS into 67 Tempest

feeds@yuku.com (TM2008) — Mon, 14 Apr 2008 13:16:49 GMT

It seems to me there is a special number for the rag joint that works on this conversion, something from a
gm pickup, perhaps? Does anyone here remember, please?

WS-6 shaft = 3/4"
1967 Tempest, non-power column = 13/16"

Thanks,
TM

converting to manual 1966

feeds@yuku.com (mikestempest) — Sun, 23 Sep 2007 09:14:10 GMT

Can the V8 parts be used to convert back to manual 3 speed tranny or are they OHC specfic. If so, does anyone have a lead to get the needed parts such as the z-bar etc.
Thanks,
Mike

Need alignment spec

feeds@yuku.com (passbob) — Sun, 12 Aug 2007 20:21:12 GMT

Is there a place I can find alignment specs for my 68 Firebird Sprint? The whole front end was recently rebuilt with stock parts. It will be used for pleasure driving and it has the standard 70/14" radial tires.
Liz

manual shift bellhousing with a hydraulic clutch

feeds@yuku.com (critter) — Tue, 07 Aug 2007 09:46:05 GMT

I am installing an OHC6 in my 30 chrysler.and am going to use a 4/5 speed Has anyone ever come up with a bellhousing or way to use a hydraulic clutch with this motor???
CAMMER 6 I still need you to email me>
Thanks+++Critter

Firebird Sprint Power Steering Conversion

feeds@yuku.com (BLE74S) — Mon, 21 May 2007 05:43:56 GMT

Can anyone that has done a conversion from manual to power steering on a firebird sprint give me the low down on the parts needed?

There is some obvious stuff; Steering box, pump, pump attachement brackets, twin groove pullies, fluid lines, but what else is needed?

Can I use my original steering column and rag joint? what about my idler arm - is that different? Some direction from anyone with experience of this job would be really helpful, as I don't want to be shipping a...

best suspension?

feeds@yuku.com (66CustomTempest) — Mon, 07 May 2007 13:29:37 GMT

I'm starting to restore my 1966 Tempest and am trying to decide on what brand suspension to put on it. Hotchkis or Edelbrock? Edelbrock is about $70 cheaper for the coils and $20 cheaper per strut, but you always hear Htchkis being top of the line. What are any of your thoughts?

T56?

feeds@yuku.com (RamAirZ) — Sun, 29 Apr 2007 14:16:34 GMT

Has anyone tried fitting a late-model LT1 T56 to our OHC motors? I know a guy that worked one out on a Pontiac 400 so I would think we could get it to work on our motors as well. Or even use the Richmond version which is a direct replacement for the Muncies (use side shift levers and everything). I decided to go LSx motor with my 69' but want to use this OHC in a late 80's early 90's 3rd gen Trans Am

Rear Gear Change with manual 4 speed

feeds@yuku.com (dtpontiac) — Sun, 08 Apr 2007 08:00:22 GMT

I'm considering upgrading my gears from the current 3:08's to perhaps a 3:55 posi. I have a 66 OHC in my 65 Tempest post coupe with a Saginaw manual 4 on the floor. Its a 230 with the 4 bbl intake & dual exhaust. I'd like to give it a little more pep. I'm wondering if the RPM's on the highway would be ok for my engine. The car is a driver and sees about 4,000 miles a year. Will the 3:55's be too much with this combo?
I want to keep it a 6 cyl - but don't want to end up doing a rebuild...

Front Coil Springs

feeds@yuku.com (67 69 Sprint) — Wed, 07 Feb 2007 17:15:58 GMT

I need to replace the front coil springs on my 67 Firebird convertible but I would like to find a set that is a higher rate (around 380#?) but will still give me the stock height or at most 1/2" lower. Is there anyone here that has done this on a 67 convertible?

Does anyone know what the stock replacement part number would be for the original GM spring #397905? One company told me it's #638 another said #6310. A cart I found on this web site shows these both at the same rate...

Chevy Flywheel and clutch setup :)

feeds@yuku.com (RamAirZ) — Thu, 28 Dec 2006 21:25:39 GMT

Well I read that we can swap in a chevy crank, so does this mean a chevy flywheel will work on our cranks? McLeod makes an aluminum and a steel flywheel for the chevy straight 6. I know people said you could drop in a 292 crank, so would the flywheel interchange? If so that'd be awesome and to alleviate the problems of finding all the clutch linkage stuff for my Muncie in my 69', I found Howe's and McLeod both make Hydraulic throwout bearing setups for our old 4-spds (muncie, saginaw, st-10,...

Manual Trans swap

feeds@yuku.com (RamAirZ) — Sun, 24 Dec 2006 20:08:55 GMT

Hey guys, alot of the older posts are deleted and wanted to clarify a few things. I have a Muncie M-20 (will be getting an M-22 wide-ratio italian gearset and iron midplate with super case down the line) out of a 72' LeMans sitting in my garage. Complete setup with bellhousing, flywheel, etc. Do V8 flywheels bolt up to our OHC's? If not does anyone sell an aftermarket flywheel for our motors? And according to one of the lower post my 72' Bellhousing will not fit due to starter location? Would...