Doing a Trick Flow headed 461, and have a bunch of forum members involved in this one.
- Brent and I, as always, bench racing, comparing ideas and primary parts guy
- Joe Craine doing port work on a -F PI intake
- Wes recurved/restored a factory distributor
- Lots of parts from Doug Garifo as well
Snapped a couple pics yesterday, this is likely the first hyd roller TFS engine with Brent's rockers. This one will also be painted concours-correct with all Cobra Jet external components for a 68.5 ram air car. You can see we milled the Trick Flow logo off the front of the heads. They won't look exactly like stock heads, but enough to hide to the passer by when it's all painted blue. Going in a 3.91 geared 4 speed Mustang fastback
Got a little different results from the .200 stand cut Brent usually sees. I ended up almost exactly at -.100 to get the rocker pattern correct and ended up with .620 at the valve with 155/390 valve spring pressure, versus .610 with checking springs the first time.
Here is a before shot, this setup uses a set of Doug's stands cut .200, with tins at .030
Here is an after shot, I made a one piece bar at .096 and took away the tins, would have liked to use them, but I just couldn't find material for a spacer that I liked. FWIW, the tins worked nicely with Doug's stands and the TFS heads, and the recessed head bolts make shimming things with a one piece rail easy. The end result of the combo would be the same as a .100 cut on Doug's stands, or a .070 cut with the tins.
Should be a fun build, very similar to the iron 461 I posted on the dyno page, but some neat differences.
- 1.0/1.0/2.0 ring combo versus 1.5/1.5/3.0
- Cam almost identical, but 2 degrees less intake lobe, but rocked back 2 degrees to 107
- Ported -F PI intake versus ported CJ intake
- Trick Flow heads versus iron CnC ported CJ, same valve sizes (peak flow on CJ heads were in the 320 cfm range, but thinking the medium riser port and modern port design will gain flow everywhere)
- Small 69 cc chamber with dish vice 83 cc CnC Craft ported iron chamber
- .041 vs .046 quench
- Canton windage tray versus Ford
- Much lighter rotating assembly with Molnar rods, bobweight ended up to be 111 grams less than the iron CJ, which was light already)
More to come, this one should be another healthy one with 16+ in Hg of vacuum and well over 500 hp with mid-grade pump gas
Might need to upgrade my 489
