Toddoky

I'm not exactly sure on that as we did the fit check of the T56 Magnum with the Hooker crossmember in a X-body car though we did check the LS1 T56 on both the X-body and F-body cars. Because of this, we didn't have the opportunity to properly assess the amount of actual tunnel work needed to get it installed into an F-body. You may not have to do any cutting since it appears in your photos that you have new body mounts installed...it looks like you're going in a little blind, so just take it slow. Be sure to used the spacer supplied with the crossmember as it makes up the difference in the machined height of the mounting pads on both transmissions...the pad surface on the T56 Magnum is closer to the centerline of the output shaft than the pad on the LS1 T56.

Dub Silverado

iTrader: (5)

I have seen a lot of First Gen F Body cars say that no cutting other than new shifter hole is needed for the Magnum. With as low as your mounts have the engine sitting I hope this will also help with floor clearance.

I do not recall any spacer supplied with the crossmember. Did you mean to say with the pro thane mount? I know a lot of those will come with a shim of some sort.

I knew you would like that sticker on the block....

Toddoky

No, the spacer I'm referring to is one that is supposed to be packaged with the crossmember and one that we've discovered did not make it into the packaging of some of the crossmembers that went out in the first production run. I'll get one sent out to you so you can install it between the mount and your transmission to maintain the intended engine inclination angle. The shim you are thinking about is a pre-load plate that comes with the Energy suspension mount; the Prothane mount that is referenced in the Hooker instructions does not use one.

Dub Silverado

iTrader: (5)

Gotcha, ok send me that spacer please....if there was a mid ram intake in the box i wouldn't be upset.

Toddoky

I don't think you'd appreciate the bandsaw work I'd have to perform on that intake to get it into such a small box...that's the humor for the day.

Dub Silverado

iTrader: (5)

Would be a lot easier to fit the shim in the mid ram box compared to your way

Toddoky

Sure would, but it won't be as much fun.

paulk68

This system should work with an LSA motor right?

Toddoky

Yes, but you'll have to change out your oil pan to the Holley 302-2 pan or one of similar dimensions to clear the steering components.

BlackHD

Hey Todd, I'm thinking of going this same route, what fix would you do to the header? Can this fix be done to mine once I place the order? I don't want to dent a brand new header!

thanks

cwylie

iTrader: (2)

I may have a solution to the header clearance issue. I am waiting for a part to show up Friday

Toddoky

I would pay close attention to what cwylie comes up with in a few days that may prevent you from having to do any modifications to the tube experiencing the interference. I offered to modify the tube for cwylie as a personal favor since he signed up to be the guinea pig on this combination of parts after many messages were shared between us; it's not a service that Hooker offers, but it will be something that any other competent fabricator can also carry out for anyone else desiring the same modification. I'll post up the results so everyone can see what was done.

BlackHD

Nice to hear

BlackHD

Thanks Todd

cwylie

iTrader: (2)

Ok I meant to put together some pictures and measurements this weekend but I never got around to it. Here is what I found out though. The stock idler arm for a 69 Camaro is 5.25 inches long center to center and this is what I originally had on my car. It cleared the 302-2 oil pan but just barely and I had to dimply the header to fit which I posted pictures of above. The moog replacement idler arms for a 68 and 69 is 5.375 inches center and center had the best clearance at the oil pan but the clearance at the passenger header was about the same. I found out the 67 used a 5.8 inch idler arm so I ordered one of those Proforged part 102-10003. The clearance at the oil pan was about the same as the 5.25 which confused me a bit because I expected it to be better but I believe this is because the 5.8 inch arm allows you to have a little more steering throw because of the longer length. With the 5.8 inch arm there is still a header clearance issue but it is less than with the shorter arms. I with my dimple I had minimum clearance with the 5.25 arm but here is pictures of the clearance with the 5.8 inch arm.

Net Net there is no solution to the holley long tubes without modification. You will either need to move the engine back a half inch or so or modify the header. The 5.8 inch idler arm from a 67 Camaro gave me the best clearance at the header but its really close at the oil pan. The 302-2 pan will fit with the tru turn setup but the steering to oil pan clearance is really close.

Stock pitman arm lengths:

Non power steering 5.25 inches
Non power steering quick ratio 5.8 inches
Power steering 5.8 inches

Stock Idler arm
67 5.8 inches
68-69 5.25 inches
Moog replacement part K6099 5.375 inches
67 replacement Proforged part 102-10003 5.8 inches

These pictures are with the holley 302-2 oil pan, holley mounts, 1 7/8 long tube headers and a 5.8 inch pitman and 5.8 inch idler arm.

Here is where I got most of my steering info:

http://www.pozziracing.com/camaro_steering.htm

paulk68

Thanks for doing all this, I am going to be in the same position, i wonder how DUB SILVERADO is making out with his Mast pan, Also doesn't hooker make shorty headers for this application as well? I wonder how those compare.

onevoice

Any chance this header has ever been tried on a car with the factory air box mounted to the firewall?

The rear two tubes turn down very close to the head, which would be necessary. If not, could you take a measurement from the outside of the tube to the centerline of the motor? Or from the outside of the tube to the inside of the frame?

Toddoky

Hey onevoice. No guess work will be necessary to answer your question as the factory A/C box was intentionally accommodated in the bend geometry of the headers for those that intend to use it.

onevoice

Finally, a header that will fit my application. I will order the whole setup soon.

Toddoky

Glad to hear it, we figured there would be a few of you guys out there wanting to run the stock A/C evaporator case...swap away my friend, both the 1-3/4" and 1-7/8" versions fit perfectly with that component.