Various 427 Questions, New Member

[undy]

IMHO, given an experienced 1/4 miler, ET Streets/slicks/drag radials on each car and assuming the rest of the car is up to the task at hand the results would have been dramatically different. Given a good hook and the proper gearing very low 10s are possible, assuming 650 hp @ around 2600 lbs.

This is just me... but ... if I'm going to run a 650hp monster on the street or otherwise, the rest of my ride is going to be up to the task of putting all that horse power to good use

BTW.. the M/T ET Street Drag Radials work right well in doing so.

Dave

[Barry_R]

I'm just gonna make sure I beat this item into the ground....

Those 40 year old rods are a grenade waiting to go off.

Metal fatigue is real, and those rods were the Achille's heel of the FE back in the day. They have not gotten any better. I can't count the number of FEs I have seen with windows in the pan rail from rods letting go.

[Rory428]

Originally Posted by undy

IMHO, given an experienced 1/4 miler, ET Streets/slicks/drag radials on each car and assuming the rest of the car is up to the task at hand the results would have been dramatically different. Given a good hook and the proper gearing very low 10s are possible, assuming 650 hp @ around 2600 lbs.

This is just me... but ... if I'm going to run a 650hp monster on the street or otherwise, the rest of my ride is going to be up to the task of putting all that horse power to good use

BTW.. the M/T ET Street Drag Radials work right well in doing so.

Dave

A decent working 2600 lb car will not need anywhere NEAR 650 HP to run low 10 second 1/4mile times. My 3100 lb Ford Fairmont bracket racer runs 10.0`s at 132 MPH with a flat tappet, iron CJ headed,single 780 vac Holley .030" over 428, shifting at 6200 rpm, with a 4 speed Jerico. I had the engine on an engine dyno last year, it made only 518HP, and just under 500 ft-lbs of torque. Dyno numbers can easily be "fudged" by correction factors, and other adjustments, such rpm per second acceleration rates. On my engine, just going from 600 rpm per sec, to 300 rpm per sec, the engine "made" almost 30 more HP. Personally, I think that although 300 rpm per sec seems to be the industry standard, I think that is too slow to be accurate in the real world. As for connecting rods, I run the 3/8" C7AE-B stock 390-438 rods, with ARP bolts. This will be the 14th year on these rods. If the budget allowed, I would go with the Crower rods, but the chinese stuff scares me. I have seen too many FE`s break the cheapo Eagle rods to risk using them.

[undy]

Originally Posted by Rory428

A decent working 2600 lb car will not need anywhere NEAR 650 HP to run low 10 second 1/4mile times. My 3100 lb Ford Fairmont bracket racer runs 10.0`s at 132 MPH with a flat tappet, iron CJ headed,single 780 vac Holley .030" over 428, shifting at 6200 rpm, with a 4 speed Jerico. I had the engine on an engine dyno last year, it made only 518HP, and just under 500 ft-lbs of torque. Dyno numbers can easily be "fudged" by correction factors, and other adjustments, such rpm per second acceleration rates. On my engine, just going from 600 rpm per sec, to 300 rpm per sec, the engine "made" almost 30 more HP. Personally, I think that although 300 rpm per sec seems to be the industry standard, I think that is too slow to be accurate in the real world. As for connecting rods, I run the 3/8" C7AE-B stock 390-438 rods, with ARP bolts. This will be the 14th year on these rods. If the budget allowed, I would go with the Crower rods, but the chinese stuff scares me. I have seen too many FE`s break the cheapo Eagle rods to risk using them.

Just a little apples 'n oranges there. Your fox body's set up exclusively for 1/4 mile duties. The "average" Cobra replica really isn't set up to leave like you're Faimont. The weight tranfer isn't there (typically). The average street machine just doesn't hook like a drag car, Cobra or not. My 07 Z06 traps similar to your Fairmont, but about 3/4s of a second slower through the quarter.. Reason?? 6 speed with a 62 mile an hour 1st gear and a driver that doesn't race much, . Now bring the Faimont out on a road course.....