As some of you know, I've just been finishing up on a 421 build. It's based in large part on one of Lingenfelter's motors in this link ( the Superram version, #2 down):http://www.geocities.com/MotorCity/7610/dyno.htm?200512 The only differences are mine uses AFR CNCd 195 heads, as they have an EO number and I wanted this thing to be smog compliant, and my static C/R turned out to be 10.6

I had a chance to put about 100 miles on it, and all I can say is..........wow! This thing is just amazing. I'm all about running a new motor fairly hard to get the rings seated, but it's really difficult to find an opportunity to maintain any kind of speed in this San Fran Bay Area traffic. I kept it in 2nd in the brief times I spent around town, and drive (not OD) on the freeways; but I darn sure painted stripes on every onramp I could find though I think the initial breakin is pretty well done now, so it's all about keeping the oil changed regularly for the next 1000 miles or so and then moving over to synthetic. The build itself turned out real well, not a drop of oil anywhere or any vacuum problems..........the only issue was a code 33 when I first took it out and started to really build some good cylinder pressure. We replaced the relays and bumped the TPS up to .64 and that seemed to take care of it until I did a little 3/4 throttle launch and full throttle run up to about 70 or 80 on a private road near my shop last nite. I think I'll move the base timing up a bit and give the TPS some more voltage and see what happens. I didn't have any MAF issues before (even on the nitrous), so I'm pretty sure there's just a sensor conflict in the ECM that needs resolving.

I'm an old time SBC hotrodder from the 60s, but I've never had anything even remotely close to this........it feels like my old L98 motor on it's 100 shot x 2 or 3 (or more), it's just incredible! I can't wipe this silly grin off my face I'll see if I can get some pics and maybe even a short video clip in the next week or two, but the bad news is I go down for some pretty serious neck surgery tomorrow morning and I'll be outta the box for awhile (maybe I should say outta the driver's seat) Damn the timing...........I want to drive my car!!!!!!! Here's the motor on a stand just before it went in:

 

That's awesome! Enjoy the ride and get in all the whiplash timeyou can in today! Can't wait for a vid or timeslip! Good luck on the surgery.

 

i know the feeling

 

Good luck with the new combo and especially the surgery

 

Hey Tim, I'm really happy for you! You waited soooooo long.....its great to hear so little trouble Can't wait to hear more about it, once you get yourself situated --- so godspeed to you in your recovery from neck surgery, we'll be here!

 

Tim that is awesome.. Do get some videos and hope all goes well with the surgery..

 

Good luck with the surgery. Are you going to be able to make it next month to Todd's G2G? I wanna see that baby roar!

 

Kinda looks like my block in the garage
Can't wait to put my motor in now
Hope to see ya in a couple of weeks.

 

That is SWEET!!!

I would run mineral oil for the first 3000 miles, at least, to seat the rings better.

 

Good job Tim, you should get some nice ET's out of that combo

 

Hey Tim, GOOD JOB! Sounds like you and that puppy are due for some serious "fun". Keep us updated as you can ( on the smog tests too).

Good luck on the surgery. Holy Mackeral, I did not know you were facing that. But there is no doubt you are motivated for a fast recovery so you can slide into the driver's seat again.

 

Wow! That is one sweet engine! Thanks for sharing and best of luck on the your surgery!

 

Very Nice Tim. Good luck with the surgery tomorrow. I'll be sending some positive thoughts your way.

 

Yeah, I'd like to see some ETs. Haha my best ET on G-Tech so far is 12.4@116 with a 175 shot pinging. You'll probably end up in the 10s or high 9s with that nice setup. GL on your surgery. Keep us posted!

 

Fantastic, Tim!!!!
Very happy for you and your Vette!
Wishing ya the best on the procedure.

 

I missed the part about the operation!!!! Damn!!! I hope it comes out GREAT!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

Gratz on the engine Tim! Definitely sound like it all came together right for you. Hope the surgery goes as well.

 

Sweet, good things come to those that wait!

Lots of planning really paid off for you!

 

It's great seeing that motor and knowing they do get in the car. Iam an old time rodder too, but the stroker 409 bowtie block motor is the first in about 20 years. Hope to get it close this spring. Finally got enoungh $$$$ to do it right.
Best of luck on your surgery. Hope you can soon get back behind the wheel and lay down some strong times.

 

I could possible fly out there and put some break-in miles on it while you're laid up.

That's a sweet lookin' engine. Sounds like it puts out some serious power.