Drag Racing Discussions > Front Engine Dragsters

Questions about a flathead FED.

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novacain:
I've got a 168" car with a small block Chevy that won't cert. Only runs 10.80s. Thinking of upgrading to a new chassis that will cert. My idea is to keep the old chassis and put a flathead ford in it . Since I know nothing about flatheads I'm wondering what kind of time could I expect out of it. Stock motor with a cam, 350 turbo. 4.30 gear. Car weighs 1360 now with the small block. Any ideas?

denverflatheader:
novacain – here’s my guess; stock fh with just cam (e.g. similar to isky 400) on 90 octane at a track 5700 feet elevation, high 13s to low 14s.  If your track is elevation like Speedworld  (now closed) in Arizona, about 7/10s faster.  If you decide to go that route, you might help that little cubic inch fh last longer by switching to a 3.60-3.90 rear gear depending on your tire diameter : )  It would take a little more effort to add electronic ignition and raise compression and you could subtract another 7/10s, and add a few more cubic inches and subtract another 7/10s, and run fuel instead of gas and subtract another 7/10s and so on and so on…  I like your idea to keep it running.  DF

novacain:
Thanks for the info, DF, I'm still in the pondering stage on this but would like an idea of where I'm going before I start.

denverflatheader:
sure thing, plus I found it interesting you mention stock fh but "cam" in your post so I was thinking you knew a little bit about fh engines.  If you ran a stock fh with stock cam, they're good to about 4000rpms.  In the quarter, you'd hit the 1/8 mile and then... be like letting off the throttle the rest of the way, probably be high 16s...   DF 

Tim Jones:

--- Quote from: denverflatheader on April 08, 2014, 12:45:13 PM ---sure thing, plus I found it interesting you mention stock fh but "cam" in your post so I was thinking you knew a little bit about fh engines.  If you ran a stock fh with stock cam, they're good to about 4000rpms.  In the quarter, you'd hit the 1/8 mile and then... be like letting off the throttle the rest of the way, probably be high 16s...   DF

--- End quote ---
Hi DF, I think he was meaning stock flathead with diffrent cam,, BTW I'm going to run a 3.70 in the comp coupe,, Tim Jones

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