the tunnel rams setups are best suited to lite weight /high rpm combos(coupe or T bucket) . they look cool as hell......but no way do you need 900 cfm in carburation on a heavy truck! when it comes to carburation, more is NOT better.....on a street truck, that sees the strip from time to time, i would rather be a little small on the carb! it will run better through a bigger range that way! tunnel rams have a very narrow powerband, & the band is very high in the rpm range......if you were talking about a very large BB, the tunnel ram probably wont hurt the "street manners" too much(500+ cubes). you have a good combo on that truck.....IMO, i would leave it  crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
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