Racing Vintage Engines

[liqu]

What are you guys building? I'm building a rear engine 234" spitzer dragster with a 325 cid Y Block Ford, 14 1/2 to 1, 280 deg @ 50 injected

[PackardV8]

A 259" Studebaker V8 bored to 272" in a vintage saloon class which has to look OEM outside. Naturally, there's a roller cam, Eagle rods, custom Racetec pistons, LS valves and beehive springs.

[Pete1]

XF/FMR to run at Bonneville.

[Ks Fats]

311 chevy 6 for vintage circle track super,3&3/8 +.030 272 Flathead from 1952 just to save it (past track championship engine). Waiting in the wings is a 300 ford 6 with 292 chevy rods & v/8 pistons for another vintage dirt car(if I live long enough)

[Joe-71]

375 CI Y Block with Moldex, Crower, JE, etc., '55 Thunderbird with 5 speed. May even try EFI. Joe-71

[chevyfreak]

311 chevy 6 for vintage circle track super,3&3/8 +.030 272 Flathead from 1952 just to save it (past track championship engine). Waiting in the wings is a 300 ford 6 with 292 chevy rods & v/8 pistons for another vintage dirt car(if I live long enough)

How is the 311 performance wise?
My buddy is building a 250 inline bored to 4 inch and 292 crank. Only issue is he takes forever. Still doing the bodywork. I'm curious on how it performs.

Chevyfreak.

[Ks Fats]

It is a torque monster but it is definitely not a high r.p.m. engine. I used an early 230 block to take out to 4 inch, same combo as your friends. Since the 230/250 is a short deck compared to the 292 you have to get creative on the counterweights, rod length,pin height etc. End result is an engine that could be considered as having too much side thrust on the cylinder walls because of the compromise you make on the rod length but with the right block it is "do-able". Could have built a 292 but it wouldn't have been as much fun.

[chevyfreak]

It is a torque monster but it is definitely not a high r.p.m. engine. I used an early 230 block to take out to 4 inch, same combo as your friends. Since the 230/250 is a short deck compared to the 292 you have to get creative on the counterweights, rod length,pin height etc. End result is an engine that could be considered as having too much side thrust on the cylinder walls because of the compromise you make on the rod length but with the right block it is "do-able". Could have built a 292 but it wouldn't have been as much fun.

He took 383 pistons for the 5.7 rod. And machined skirts and shaved some on the counterweights. Still curious to see how its gonna go. I just love the chevy inlines.

I build a 266ci, 250 bored to 4 inch, used 308 holden v8 pistons and shaved .020 off the top to zero deck.

Chevyfreak.

[frnkeore]

I'm in the process of building a 21 stud, 221 flat head. Finished it will be 239 CI.

Bored .080 (3.142) Stock type and stock CH, 3 ring pistons.

Offset ground 59A crank, to 3.85

Flat top pistons, using factory aluminum heads.

The stroke, isn't so much for CI but, more for compression.

Stock Victor head gaskets are .060 compress. With the offset stroke, they will be .018 out, for .042 piston to head clearance.

[pdq67]

Jack,

I love the old Stude. engines!! An old 232" will run like the wind!!

pdq67

[piston guy]

What are you guys building? I'm building a rear engine 234" spitzer dragster with a 325 cid Y Block Ford, 14 1/2 to 1, 280 deg @ 50 injected

I'll bet your friend's 4cyl Chevy powered Bantam roadster will out run you!

[liqu]

Yep, Dudes car just might.

Look here http://forums.y-blocksforever.com/Topic136059.aspx