51 chevy rat truck
Posted: Fri Jun 07, 2013 8:19 am
Guess its about time i started a build thread here, got some fair size plans for the truck and its all getting close to coming together.
I bought it back in nov 2011 running a 3 speed TH350 and a 305ci (150bhp!)small black chevy. Quite a few bits n pieces were a little rushed by the previous owner so i've been re wiring, adding gauges, fitted a gps speedo, rebuilt the tilt column, fitted some bear claw door latches.
Currently in the process of replacing the 65 year old axle with a more modern (1990) jag IRS. this has a LSD and a 3.54:1 ratio so should help with cruising speeds and launching.
Probuild american have almost finished building my zz4 350ci motor. This should give me around 340bhp on a holley 600cfm carb, but i can go to a 780cfm carb and edelbrock intake later and should see 400bhp with the cam thats been selected for the build.
While we are fitting the engine i'm also swapping out the TH350 to a 700r4 4 speed box. This has a final drive of 0.7:1 rather than 1:1 so again will help when cruising, it also has an electric lockup for the torque converter so will prevent any slip and reduce heat build up with the transmission fluid. The 700r4 has a ridiculous 1:3.06 first gear so i should be burning out quite a few rear tyres.
Hoping to get it back on the road next week to test the axle set up then a couple of weeks later its engine & box swap.
Anyhow heres a few pics........





I bought it back in nov 2011 running a 3 speed TH350 and a 305ci (150bhp!)small black chevy. Quite a few bits n pieces were a little rushed by the previous owner so i've been re wiring, adding gauges, fitted a gps speedo, rebuilt the tilt column, fitted some bear claw door latches.
Currently in the process of replacing the 65 year old axle with a more modern (1990) jag IRS. this has a LSD and a 3.54:1 ratio so should help with cruising speeds and launching.
Probuild american have almost finished building my zz4 350ci motor. This should give me around 340bhp on a holley 600cfm carb, but i can go to a 780cfm carb and edelbrock intake later and should see 400bhp with the cam thats been selected for the build.
While we are fitting the engine i'm also swapping out the TH350 to a 700r4 4 speed box. This has a final drive of 0.7:1 rather than 1:1 so again will help when cruising, it also has an electric lockup for the torque converter so will prevent any slip and reduce heat build up with the transmission fluid. The 700r4 has a ridiculous 1:3.06 first gear so i should be burning out quite a few rear tyres.
Hoping to get it back on the road next week to test the axle set up then a couple of weeks later its engine & box swap.
Anyhow heres a few pics........




