The numbers up to 4000 do not suprise me at all. Small bores were known for this but always ran out at the upper end. It will be neet to see these numbers on you dual quad tests too. I'll bet the 4GC's will make a good showing as well as the little Holleys...............Thanks

56 Vic, B'Ville 200 MPH Club Member, So Cal.

And here’s a picture of the Demon Street Fighter carb sitting atop the stock ECZ-B intake.

 

Lorena, Texas (South of Waco)

As a continuation of the ECZ-A manifold results that were posted within the last couple of weeks, here are the dyno results after running the Lincoln Teapot and a couple of other carbs on a dead stock, never modified, unmolested, as delivered from Ford, ECZ-B iron intake manifold.  The step at the bores under the carbs is still present on this intake.  The Lincoln carb was used with an upside down tapered carb adapter.  The other two carbs had the 1957 7/16” Bakelite spacer under them but the spacer has been reworked to allow the larger carb throttle blades to work freely.

 

Horsepower – Stock ECZ-B Intake with various carbs
Rpm	Lincoln Teapot	625 Demon Street Fighter	750HP Holley vac sec
2500	146	128	143
3000	190	185	185
3500	221	221	213
4000	241	249	240
4500	249	268	260
5000	253	277	271
5500	246	276	273
Peak@rpm	255@5100	279@5200	276@5200

 

Torque lbs/ft – Stock ECZ-B Intake with various carbs
Rpm	Lincoln Teapot	625 Demon Street Fighter	750HP Holley vac sec
2500	306	269	300
3000	333	324	324
3500	331	332	319
4000	316	327	315
4500	291	313	304
5000	265	291	285
5500	246	263	261
Peak@rpm	335@3200	333@3700	324@3000

 

Because the 600 vac sec carb that was used with the ‘A’ manifold is no longer here, I substituted one of the new Demon carbs and made a single pull with it.  That carb has much smaller primaries and makes up for it with a ‘Goggle’ valve in the secondaries making the carb close to being a three barrel.  Jetting was in the ballpark but could have still stood some tweaking if I was going to leave it on the single four manifold.  That tweaking will happen when two are them are used in the dual quad intake test.

 

Unlike where the various carbs were run on the 1956 ECZ-A intake and there was not much difference in power outputs due to the flow limitations of that particular manifold, the 1957 ECZ-B manifold even in its stock form does respond nicely to the larger cfm carburetors.

 

Here’s the link to the ECZ-A intake dyno test results.  http://forums.y-blocksforever.com/Topic77765.aspx 

Lorena, Texas (South of Waco)