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Author Topic:   The Cobra that Jack Built
Daniel Jones
Esteemed Member

Posts: 91
From:St. Louis, MO
Registered: Aug 99

posted 09-28-2000 03:20 PM     Click Here to See the Profile for Daniel Jones   Click Here to Email Daniel Jones     Edit/Delete Message   Reply w/Quote
I was looking through my old Super Ford magazines, looking for Alex's
intake test. I didn't find it but I did run across an old article on
Jack Roush's personal Cobra. The article states Jack wanted a torque
monster and a 460 would have been his choice but no aluminum heads for
the big block were available at the time. To keep the weight reasonable,
he decided to stroke a 400 and use Motorsport 351C aluminum high port
heads. Using a custom stroker crank and boring the block 0.030" over,
he was able to get 460 cubes out of the 400 block. Adapter plates and
a Motorsport high port intake, presumably a Roush piece, were used along
with a 780 Holley. The cam was surprisingly mild, a hydraulic Comp Cams
280 with 0.530" lift (article mistakenly states 0.500" lift). Claimed
output was 520 HP. Seems high given the mild cam. Perhaps the cam specs
were a typo? Or is Jack Roush just that good an engine builder.

Dan Jones

IP: 12.13.248.3

denny
New to M&M

Posts: 11
From:Northfield NH USA
Registered: Jul 2000

posted 09-28-2000 04:57 PM     Click Here to See the Profile for denny   Click Here to Email denny     Edit/Delete Message   Reply w/Quote
That HP doesn't seem that unreasonable to me given the cubic inches. There are a few NHRA 351C stockers making power in that range with even less cam lift. ie: Cook with a 72 HO goes 10.8's @124-5 and Youngblood 71 Boss 10.48 @128 (corrected to sealevel)

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D French
67 427 Fairlane(A/SA) 73 Mustang 351c

IP: 209.91.4.158

Moneymaker
Big Kahuna

Posts: 4655
From:Lyons, IL, USA
Registered: May 99

posted 09-28-2000 05:36 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
And Picht goes 10.90's with a 72 351 HO in E/S. Brad Harris has Bill Hawks old car and it runs 11.00's in E/SA also with a 72 351 HO.

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Alex Denysenko Co-Administrator and Moderator
Fleet of FoMoCo's too long to list!
http://superstockers.homestead.com/week.html

IP: 205.188.192.166

Moneymaker
Big Kahuna

Posts: 4655
From:Lyons, IL, USA
Registered: May 99

posted 09-28-2000 05:38 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
By the way, the article on the intakes was in 1980 or very early 1981 as my feeble memory is beggining to recall. Alex

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Alex Denysenko Co-Administrator and Moderator
Fleet of FoMoCo's too long to list!
http://superstockers.homestead.com/week.html

IP: 205.188.192.166

denny
New to M&M

Posts: 11
From:Northfield NH USA
Registered: Jul 2000

posted 09-29-2000 08:08 AM     Click Here to See the Profile for denny   Click Here to Email denny     Edit/Delete Message   Reply w/Quote
Didn't Hawks car have a hydraulic cammmed 351 in it when he ran it? he was running G/H was't he? Remember him going 11.2 in G about 7-8 years ago and NHRA wanted to see everything and it was all legal.

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D French
67 427 Fairlane(A/SA) 73 Mustang 351c

IP: 209.91.4.73

Moneymaker
Big Kahuna

Posts: 4655
From:Lyons, IL, USA
Registered: May 99

posted 09-29-2000 11:20 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
It still is hydrualic cammend Denny. It can run E/SA with the weight out as a Sportsroof and not a Mach One. Alex

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Alex Denysenko Co-Administrator and Moderator
Fleet of FoMoCo's too long to list!
http://superstockers.homestead.com/week.html

IP: 205.188.195.44

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