DeTomaso Mailing List: July 97, Message #99
     



From: Dennis Antenucci <itbewild@gte.net>

Subject: 351C Intakes Test

Date: Sat, 05 Jul 1997 22:41:36 -0700



Okay Motorheads, Newbies & Grasshoppers

,

So ya wanna know how your intake manifold compares?  



For those still running iron 4V Cleveland heads the choice of what the 

best intake manifold to use has been the subject of much bench racing. 

Which is why so many people are building Clevelands with Ford 302B 

aluminum heads or gawd-forbid, going to Windsor's. :-]

  

Ron Graves just mailed me a copy of a 10/93 Super Ford Magazine article 

which tested several intakes on a serious high compression stroked 351C. 

Here's the summary of the best indicating where they made the peak 

numbers (with a *).  :



NUMBER	INTAKE			RPM	TORQUE LB/FT	HORSEPOWER 



First	Holly Strip Dominator	5000	420		400

"	"			5500   *435		455

"	"			6250	418	       *498

The Killer Intake! From 5250 to 6750 rpm the volumetric efficiency is 102 

to 110.6 percent! If you have one of these babies (and I do) treat it 

like gold cause Holly doesn't make it anymore which is a shame. If you 

find one at a swap meet buy it immediately and protect it with your life. 

After my last engine re-build we ran three intakes on a chassis dyno and 

the Holly made the most power.  

_______________________________________________________________________

Second	Ford Part #4145		3750   *425		303

"	"			5500	408		427

"	"			6250	411	       *490

This duel-plane intake thinks it's a single plane! Volumetric Efficiency 

is very good, although 100 percent isn't reached until 5750 rpm. 

_________________________________________________________________________Third	Edelbrock Torker 351	4750   *421		399

"	"			5500	416		436

"	"			6750	374	       *480

This is a low-rise single-plane intake that thinks it's a duel plane! 

Peak torque comes at 4750 rpm, which is very streetable. VE reaches 100 

percent at 5000 rpm, hitting 110 percent at the top end.

________________________________________________________________________ 

  

Fourth	Wiand X-Celerator	5250   *410	       *410

"	"			5750   *410	       *449

"	"			6500	382	       *473 		

Another single plane that thinks its a dual-plane. The torque curve is 

flat as Nebraska, with two torque peaks at 5250 and 5750 rpm. VE is good, 

reaching 100 percent at 5250 rpm and climbing to 107 at 6750 rpm.



I will pass the entire article to Dave and Linda Adler for publication in 

the next PI.  		 						

What about the Edelbrock Performer? Good street manifold with low-end 

torque. However, it dies at 5500 rpm. The other positive. . . it fits 

under the stock engine screen! Canadian's an real men will want a real 

intake. :-]



Thanks to Ron Graves for sharing.



Mad Dog



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