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Author
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Topic: What Cam???
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Stang72
Journeyman Posts: 20
From: Arkel,Zuid-Holland,Holland
Registered: Jan 2003
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posted 01-08-2003 05:05 AM
   
Hi Guys, im new to this forum so first let me introduce myself. I live in the Netherlands and got an 72 Mustang Grand��with an 302/FMX auto.
Now my question is, I've rebuild the engine with Flattop pistons (1-10.5 c.r.), heads completely revised and ported ,Holly 600cfm with and Weiand stealth dualplane, Mallory unilite ignition, headers to 40-series flowmasters. Now the engine has got an Ford motorsports cam M-6250-A312. And my opinion is that is pulls like crazy but only on higher revs from 2500 on. Will an other cam from Competition Cams (nostalgia 31-670-4 ) make a difference on more torque in the bottom area???. The rear-xle is standard with 1-3.00 settings and 275-60-15 tyres. Because it will hardly burn , only out of corners on high revs.thanx in advance
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two89w
Gearhead Posts: 196
From: sydney australia
Registered: Sep 2002
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posted 01-08-2003 05:17 AM
comp cams 270s
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V8 Thumper
Gearhead Posts: 3467
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 01-08-2003 09:20 AM
Welcome to M&M!
Look at the ID's: a Dutchman, an Aussie, and a Yankee  I run the Comp 270S, it's a great street cam  , but it too starts to come in hard <2500 rpm, and that's in a stroker.
Got the specs on that Motorsport cam handy? ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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johnmustang
Gearhead Posts: 4235
From: Vancouver Island , British Columbia , Canada
Registered: Nov 2001
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posted 01-08-2003 09:48 AM
I would think that if you don,t want to start messing with the motor, gear the car. get yourself a set of 3.55 or 3.73 this will wake you up out of the hole, the problem being wheel spin. Good luck and welcome to M&M JOHN  ------------------
65 2+2 FASTBACK
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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V8 Thumper
Gearhead Posts: 3467
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 01-08-2003 09:50 AM
Add a Canuck (sp?) to the distinguished list ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Stang72
Journeyman Posts: 20
From: Arkel,Zuid-Holland,Holland
Registered: Jan 2003
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posted 01-08-2003 10:06 AM
Ok Specs of the Motorsports cam are : intake events open at 0 degrees BTC, closed at 34 degrees ABC, Exhaust events 49 degrees BBC,closed at 5 degrees BTC, DUration intake 290 or 214 degrees, exhaust 300 or 224 degrees, lift lobe .295 intake or .310 exhaust valve .472 int. or .496 exh. lobe center 107 degrees ,exhaust 117 degrees. Camshaft intake and exhaust are measured at 0.050 tappet lift. Duration at 0.050 tappet lift.
source : Ford Motorsport
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kid vishus
Gearhead Posts: 4538
From: middle of NC
Registered: Oct 2000
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posted 01-08-2003 10:10 AM
Welcome to M&M. I agree with John. I think it needs more gear. Those tall gears kill any low end torque the motor might be making now. A set of 3.55s or 3.73s will increase low end throttle response more than any motor mod you can make at this time. ------------------
Rob Hetzler
member #773
'69 mustang, 351C, best 9.97 @ 133 mph 1/4, 6.18 @ 109.9 1/8, 1.319 60'
'70 mustang, flintstone power
'93 F150 Lightning 15.33 @ 87 mph, completely stock with 164k miles
'99 Pro Et track champion
'00 Mod ET R-up (with new car)
'01 5th place Top ET, 7th place Mod ET My Photo Page
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Hemikiller
Gearhead Posts: 384
From: Clinton, CT
Registered: Feb 2002
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posted 01-08-2003 12:21 PM
Before you change anything, did you convert the rocker studs to the screw in adjustable type wil polylocks, or do you still have the factory bottleneck press in studs? If you have no low end torque, you may want to re-adjust your valvetrain as you may have too much lifter pre-load, especially with the factory setup.
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steve'66
Gearhead Posts: 6522
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-08-2003 04:56 PM
Welcome to M&M! SteveW
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Stang72
Journeyman Posts: 20
From: Arkel,Zuid-Holland,Holland
Registered: Jan 2003
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posted 01-09-2003 03:06 AM
Hi Hemikiller,
i've still got the Factory press-in studs.. to much preload on the lifters???? how can i measure this...?????
and thanx to all the replies!!
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