Big D'S TA Block Beast

GNVYUS 1

Active Member
Sounds like Rick at Precision is the local guy.

10:5:1 comp is the highest I've heard about on a GN engine, this was import stuff in the past. E85 car?

250ci, what's the safe rpm to spin it?

Damn that car spools the 67 like nothing.
 

BEATAV8

The Engine Whisperer
Sounds like Rick at Precision is the local guy.

10:5:1 comp is the highest I've heard about on a GN engine, this was import stuff in the past. E85 car?

250ci, what's the safe rpm to spin it?

Damn that car spools the 67 like nothing.
Yep, Rick is our guy. E85 all the way! I take it to 6500+ often and sometimes to 6700. It's very well mannered with a smooth idle, strong vacuum, and really perfect drive-ability.

I have another one in the works, compression will be close to 12:1 on that one with .050 duration in the mid 230's. Probably going to go with a Work G4S for that.
 

GNVYUS 1

Active Member
Is this an 8 or 14 bolt head?

12:1 is a Honda forced induction compression, you guys must be noticing something substantial on this platform to go there. Care to comment?

BTW, who's left in IL to hand the GN too anymore? Rick in Mokena is busy.
 

BEATAV8

The Engine Whisperer
Is this an 8 or 14 bolt head?

12:1 is a Honda forced induction compression, you guys must be noticing something substantial on this platform to go there. Care to comment?

BTW, who's left in IL to hand the GN too anymore? Rick in Mokena is busy.
14 bolt heads.
I look at dynamic compression ratio and of course draw on my past experience when setting it up. The 10.5:1 compression turned out to be relatively easy to tune. I also have a cylinder pressure transducer on hand with some analysis tools.
CA560C66-A464-4CD7-963F-5A809D65B51C.jpeg
E1AA9BA9-A293-44E4-B8E4-1CF92FFB917B.jpeg
 

BEATAV8

The Engine Whisperer
BTW, who's left in IL to hand the GN too anymore? Rick in Mokena is busy.
There's not many... I work (a little) on some local cars but my time is limited. Prasad at Turbo Farm does some too. Mostly I focus on controls and tuning and guiding the owner with what’s needed next. Primarily ECUGN stuff. Sound Performance is a good shop to use.
 

434nova

Active Member
I like the fact that there is no exotic billets crank and rods in the motor. Lots of builders won’t touch a ta block unless you spend 5k on crower crank and rods. It’s not like your building a world record breaking Buick you just want a reliable piece.
 

BEATAV8

The Engine Whisperer
I like the fact that there is no exotic billets crank and rods in the motor. Lots of builders won’t touch a ta block unless you spend 5k on crower crank and rods. It’s not like your building a world record breaking Buick you just want a reliable piece.
Exactly! Just a hobby. Tinker and enjoy.
 
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