pump gas 454 combos?

[68c10owner]

I`m still searching for a 73-75 c-10 to make into a street/strip hot rod but I`m interested in hearing what kind of engine set ups you guys are running to push these heavy trucks to the low 12`s-high 11`s. Not going to cage it so can`t go faster than 11.49 and must run on junk California 91 pump gas. I`m planning to do a flat top 454 with closed chamber ovals. Compression should be around 9.5:1. Heads are at the machine shop now and are 390 casting closed chamber ovals that are listed at 96cc chambers. They are getting 2.19/1.88 valves and just some mild porting. Plan to keep the rpm range at no more than around 6200rpms. So what are you guys running?

[dinnut]

My current setup Will 12.0-12.1 @109 on 93 octane and a 325 drag radial with a 3.55 gear through mufflers. Put some 104 octane race gas in it and itll go 11.9x@111.

454 chevy .70over
Srp small dome forged pistons. 10:1 with a 114 cc head
781 oval ports with 2.19/1.88 valves exhaust bowls have been opened up.
Comp xe284 240/246@.50 .57x/.58x lift
Rpm air gap
Holley 850
4100 freakshow. Transking th400.
Gearing is not optimal for tire size and end of track rpm.
1.70 60' on motor
Dyno'd 525@5600hp and 560tq@4400 on an engine dyno
longbed truck @ 4000 w/ driver

[68c10owner]

Originally Posted by dinnut

My current setup Will 12.0-12.1 @109 on 93 octane and a 325 drag radial with a 3.55 gear through mufflers. Put some 104 octane race gas in it and itll go 11.9x@111.

454 chevy .70over
Srp small dome forged pistons. 10:1 with a 114 cc head
781 oval ports with 2.19/1.88 valves exhaust bowls have been opened up.
Comp xe284 240/246@.50 .57x/.58x lift
Rpm air gap
Holley 850
4100 freakshow. Transking th400.
Gearing is not optimal for tire size and end of track rpm.
1.70 60' on motor
Dyno'd 525@5600hp and 560tq@4400 on an engine dyno
longbed truck @ 4000 w/ driver

Sounds like a strong runner. I think my 11" 2800-3000 stall is going to hurt me but I can get it going with that and change it out later. I planned on running a 28" tire with 4.11 gears. Figured I`d need the gear to help get the heavy truck rolling.

[dinnut]

My plan is to change to the 315/60/15 Et street radials and put it on a 12 inch wheel. .gonna go with a 4.11 gear as we'll but with a 30" tire still have decent rpms when I spray. I've had better luck with a smaller converter 9.5 to 10 inc.. Recently just switched from 3500 to a 4100 and my 60 foot improved significantly