New 400 engine, stops running at idle with no warning, what is it?

Asked by 77ThunderBoat Mar 17, 2011 at 01:10 AM about the 1977 Ford Thunderbird

Question type: Car Customization

Engine: 400 / 6.6L, 4.040 bore, EB performer dual plane intake, Holly 600cfm 4bbl with 1" open carb spacer, CompCam cam w/ 262 lift, with matching hydro lifters, push-rods, springs and roller-rockers. An HEI distributor @40,000v. PROformance plug wires, and Autolite spark plugs.
Starts good and idles good for about 3 or 4 mins. Then with no warning, it stops running, theres no sound like a howl or a squeak when it does. When it stops i can't re-start it until about an hour has passes. The battery is verified good, alternator is good, HEI is good or it wouldn't run, Ive adjusted the carb up and down and will do it on lean, rich or (just right). Someone with more under their belt than me (experience wise) throw me a bone... what is it im missing?

2 Answers
265

judson21 answered 13 years ago

with a built head you may run in to problems with timing and/ or fuel problems. Check your lift on your cam could be to much for engine to handle believe it or not.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.

1977 Ford Thunderbird

Write a car review

Review another car

Shortcuts

Search Ford Thunderbird Questions

CarGurus Experts

  • #1
    Larry Sturgis
    Reputation
    3,020
  • #2
    Gene Arnett
    Reputation
    2,080
  • #3
    MrBlueOval
    Reputation
    1,580
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Corvette
773 Great Deals out of 13,958 listings starting at $4,995
Used Chevrolet Camaro
632 Great Deals out of 8,690 listings starting at $2,800
Used Mercedes-Benz SL-Class
133 Great Deals out of 2,334 listings starting at $4,995
Used Pontiac Firebird
9 Great Deals out of 348 listings starting at $6,948
Used Ford Bronco
484 Great Deals out of 46,194 listings starting at $27,950
Used Honda Civic
1,428 Great Deals out of 28,785 listings starting at $995
Used Dodge Charger
792 Great Deals out of 14,525 listings starting at $1,500
Used Dodge Challenger
689 Great Deals out of 11,504 listings starting at $5,000

Used Cars for Sale

2005 Ford Thunderbird For Sale
3 Great Deals out of 60 listings starting at $8,980
2004 Ford Thunderbird For Sale
6 Great Deals out of 88 listings starting at $6,990
2003 Ford Thunderbird For Sale
6 Great Deals out of 98 listings starting at $5,950
2002 Ford Thunderbird For Sale
22 Great Deals out of 246 listings starting at $6,995
1997 Ford Thunderbird For Sale
4 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.