[1967Tempest]

Originally Posted by Sirrotica

Dave, unless someone's changed the transmission it's a metric 200 tranny, not substantial enough for the 301 let alone a 400. You'll need a better radiator more than likely. The cheapy 3 tube headers fit this swap. The rest is probably pretty straight forward.

The 400 is about 125-150 lbs. heavier so the front springs may need help if they're marginal already.

Yeah, the tranny is not my worry. He installed a B&M shifter for a TH350, so I have to assume a TH350.

Which chepy headers? Are they easy to install? You know how much I LOVE headers..

[Sirrotica]

Originally Posted by 1967Tempest

Yeah, the tranny is not my worry. He installed a B&M shifter for a TH350, so I have to assume a TH350.

Which chepy headers? Are they easy to install? You know how much I LOVE headers..

These type headers: http://autopartsway.amazonwebstore.c...source=froogle

I think they're easy to install, easier than 4 tubes are. There are probably other brands of 3 tube headers, these are the ones I found right off.

[goatwgn]

Originally Posted by 1967Tempest

Yeah, the tranny is not my worry. He installed a B&M shifter for a TH350, so I have to assume a TH350.

Which chepy headers? Are they easy to install? You know how much I LOVE headers..

The shifter can also be used on a TH200. To see if he has the 200 (3speed), look to see if it has the word METRIC stamped into the pan. The 200 and 350 have the same shape to the pan, but the 350 one is larger (and is mounted with 1/2 headed bolts) vs 13mm. A 350 will also have a vacuum modulator, the 200 does not. "Full length"Headers stink for a mild street application(IMO). 3 tube "Shorty headers" shouldn't be too troublesome to install. For manifolds, I would try and use log manifolds for an earlier "A" body car (ones where both exit out toward the back and not the middle). Eventually, the rear end may be a weak point. While he drives it, I would be on the search for a 8.5 unit from a Buick GN or "T" type. Most '78-'87 "A", "A" Special, and "G" cars have a 7.5.