diff --git a/.travis.yml b/.travis.yml
index 2b699bc84e8..e4289f76dc1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,8 +34,13 @@ matrix:
     - os: linux
       node_js: "8"
       env: CXX=g++-4.8 TEST_SUITE=testState
-# temporarily disable testBlockchain
-#    - os: linux
-#      node_js: "8"
-#      env: CXX=g++-4.8 TEST_SUITE=testBlockchain
+    - os: linux
+      node_js: "8"
+      env: CXX=g++-4.8 TEST_SUITE=testBlockchainBlockGasLimit
+    - os: linux
+      node_js: "8"
+      env: CXX=g++-4.8 TEST_SUITE=testBlockchainValid
+    - os: linux
+      node_js: "8"
+      env: CXX=g++-4.8 TEST_SUITE=testBlockchainTotalDifficulty
 script: npm run $TEST_SUITE
diff --git a/README.md b/README.md
index 281ab66b6dc..46ded9dbca9 100644
--- a/README.md
+++ b/README.md
@@ -158,6 +158,40 @@ Emits the Transaction that is about to be processed.
 #### `afterTx`
 Emits the result of the transaction.
 
+
+# Internal Structure
+The VM processes state changes at many levels.
+
+* runBlockchain
+  * for every block, runBlock
+* runBlock
+  * for every tx, runTx
+  * pay miner and uncles
+* runTx
+  * check sender balance
+  * check sender nonce
+  * runCall
+  * transfer gas charges
+* runCall
+  * checkpoint state
+  * transfer value
+  * load code
+  * runCode
+  * materialize created contracts
+  * revert or commit checkpoint
+* runCode
+  * iterate over code
+  * run op codes
+  * track gas usage
+* OpFns
+  * run individual op code
+  * modify stack
+  * modify memory
+  * calculate fee
+
+The opFns for `CREATE`, `CALL`, and `CALLCODE` call back up to `runCall`.
+
+
 # TESTING
 
 ### Running Tests
@@ -184,6 +218,10 @@ Running all the blockchain tests in a file:
 
 `node ./tests/tester -b --file='randomStatetest303'`
 
+Running tests from a specific directory:
+
+`node ./tests/tester -b --dir='bcBlockGasLimitTest'`
+
 Running a specific state test case:
 
 `node ./tests/tester -s --test='stackOverflow'`
@@ -201,38 +239,6 @@ All/most State tests are replicated as Blockchain tests in a ``GeneralStateTests
 
 For comparing ``EVM`` traces [here](https://gist.github.com/cdetrio/41172f374ae32047a6c9e97fa9d09ad0) are some instructions for setting up ``pyethereum`` to generate corresponding traces for state tests.
 
-# Internal Structure
-The VM processes state changes at many levels.
-
-* runBlockchain
-  * for every block, runBlock
-* runBlock
-  * for every tx, runTx
-  * pay miner and uncles
-* runTx
-  * check sender balance
-  * check sender nonce
-  * runCall
-  * transfer gas charges
-* runCall
-  * checkpoint state
-  * transfer value
-  * load code
-  * runCode
-  * materialize created contracts
-  * revert or commit checkpoint
-* runCode
-  * iterate over code
-  * run op codes
-  * track gas usage
-* OpFns
-  * run individual op code
-  * modify stack
-  * modify memory
-  * calculate fee
-
-The opFns for `CREATE`, `CALL`, and `CALLCODE` call back up to `runCall`.
-
 
 # LICENSE
 [MPL-2.0](https://www.mozilla.org/MPL/2.0/)
diff --git a/circle.yml b/circle.yml
index 21aee1e4cf6..a45e0a24cb2 100644
--- a/circle.yml
+++ b/circle.yml
@@ -8,5 +8,5 @@ test:
   override:
 # testVM disabled. testBlockchain temporarily disabled
 #   - case $CIRCLE_NODE_INDEX in 0) npm run lint ;; 1) npm run testVM ;; 2) npm run testState ;; 3) npm run testBlockchain ;; esac:
-    - case $CIRCLE_NODE_INDEX in 0) npm run lint ;; 1) npm run testState ;; esac:
+    - case $CIRCLE_NODE_INDEX in 0) npm run lint ;; 1) npm run testState ;; 2) npm run testBlockchainBlockGasLimit ;; 3) npm run testBlockchainValid ;; 4) npm run testBlockchainTotalDifficulty ;;  esac:
         parallel: true
diff --git a/package.json b/package.json
index 0811b6525b1..e5638260a70 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,9 @@
     "testVM": "node ./tests/tester -v",
     "testState": "node ./tests/tester -s",
     "testBlockchain": "node --stack-size=1500 ./tests/tester -b",
+    "testBlockchainBlockGasLimit": "node --stack-size=1500 ./tests/tester -b --dir='bcBlockGasLimitTest'",
+    "testBlockchainValid": "node --stack-size=1500 ./tests/tester -b --dir='bcValidBlockTest'",
+    "testBlockchainTotalDifficulty": "node --stack-size=1500 ./tests/tester -b --dir='bcTotalDifficultyTest'",
     "lint": "standard",
     "test": "node ./tests/tester -a"
   },
diff --git a/tests/tester.js b/tests/tester.js
index 471db88c7b5..e7f37335e94 100644
--- a/tests/tester.js
+++ b/tests/tester.js
@@ -135,6 +135,8 @@ function runTests (name, runnerArgs, cb) {
   testGetterArgs.forkConfig = FORK_CONFIG
   testGetterArgs.file = argv.file
   testGetterArgs.test = argv.test
+  testGetterArgs.dir = argv.dir
+  testGetterArgs.excludeDir = argv.excludeDir
 
   runnerArgs.forkConfig = FORK_CONFIG
   runnerArgs.debug = argv.debug // for BlockchainTests