Thread: first 390 build

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Originally Posted by riley1996

Hi I'm riley I'm new and I'm just needing some expert advice on my 390 build so thanks for your time and here's what I got

390 bored .30
650cfm carb
4 hole spacer
Probe pistons 1.765 4cc
D2teaa heads milled 65cc 2.09/1.66
275deh cam @.50 213/232. 275/285 514/541 110lsa
.020 gasket
Stroke 3.78
Rod length 6.486
Deck clearence .029
11:19.1 compression
Full length big tube headers
2.5 duel exhaust flowmaster 40s
C6 stock stall
3.25 gears

Cylinder pressure will be high (short cam with 11.19:1 SCR), so make provision for a strong ignition system. Begin budgeting for a higher stall converter. You want to light 'em up at will and I think you'll need a looser converter to do it. I predict that you'll grow weary of paying for 110 pretty quickly. The motor will want more carburetor and a good high-rise, dual-plane intake manifold for max power. Use an Edelbrock Performer RPM part number 7105, 71053 or 71054 and 750 vacuum secondaries carb. Use a 14" x 4" air filter system so the motor can breathe.

Please read through this tutorial to learn about making a flat tappet cam work in today's world....
http://www.crankshaftcoalition.com/w...ips_and_tricks

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