Flanders 46 Report post Posted December 18, 2018 I've searched on here and there seems to be all sorts of answers :) so I'll be good and specific with my question. I've got a stock 351W (1969, of course!), power steering, stock clutch z-bar with my 4-spd. My exhaust manifold has a crack in it, so I was debating replacing with some shorty headers. What will fit with my configuration? Hedman says "some modification to clutch linkage may be required", and I read on here that JBA shorties don't work with stock power steering unit. Any other comments? I'd like to be able to go click-click-click-order and then bolt it right on :) Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted December 19, 2018 All we've ever used are BBK offroad. Quote Share this post Link to post Share on other sites
nymustang1969 22 Report post Posted December 19, 2018 I'm running the JBA shorties with factory power steering, a/c and z bar clutch linkage. Fit was excellent. Been on the car now for about 9 years now. No leaks and still look like New. Not cheap, but excellent quality. Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted December 19, 2018 mustangstofear: do you have a link? On BBK offroad's website, I can only select years back to 1983 for exhaust parts. nymustang1969: thanks! Any change you have a product #? I'm looking on summit: 1655S: for cable clutch (applications say z-bar modification may be required) 1653S: application also says z-bar modification could be required. Which of the above parts am I looking for? 1655, or 1653? Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted December 20, 2018 I have the 1653S headers on a 1969 Mach 1, 351W, 4sp with factory Z-bar clutch linkage, and Borgeson power steering. The headers fit fine. Before going with Borgeson power steering I tried reinstalling my stock power steering. I noticed the drivers side collector dumped almost directly on top of the power steering ram. With 2-1/2" exhaust it didn't look like there was enough space to easily route the exhaust through there. With the stock Z-bar and no power steering ram there is a lot of space for the exhaust. nymustang1969 got exhaust to fit on his with stock P/S and stock clutch linkage so I'm sure it can be done. Maybe he has a picture of it. I'm curious how it all fits together. Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted December 20, 2018 1969_Mach1: it might be the difference between 1653S and 1655S. Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted December 20, 2018 Flanders, it could be. JBA didn't have the 1655 versions when I purchased mine. Now that I see them, I wonder if the drivers side of the 1655's would fit better than the 1653's with stock power steering and stock Z-bar clutch linkage. Quote Share this post Link to post Share on other sites
nymustang1969 22 Report post Posted December 21, 2018 I used the 1653S headers and the matching JBA H pipe. It was a close fit where the H pipe goes over the top of the slave cylinder though. I have a friend that owns an iron work shop and he made me a slave cylinder drop bracket that lowers the slave cylinder about 1/2 inch. Fits well now. At the time I spoke with JBA technical support and they claim the stock bracket should have worked, but it was too tight in my car. Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted December 21, 2018 Straight from JBA: Quote The difference is the driver side. For your application the 1653S is the correct header. If you bought our Z-bar you would need to worry about any modifications. I have attached the instruction sheet that will give you more details about the Z-bars. The 1655S will not clear the factory Z-bar. Looks like I'll give it a shot... Thanks all for feedback! Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted December 21, 2018 The Z-bar JBA sells almost looks like it's for the 10.5" clutch used on 302 motors and not the 11" clutch used on 351W motors. I guess you'd have to try it to find out of it works. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted January 8, 2019 I have the Hedmann shorties with a 351W based stroker and a C-6. I used adjustable motor mounts and they fit nicely even with my Borgeson steering box. Details on my 1970 convertible build thread. Quote Share this post Link to post Share on other sites