Well, I finally got around to getting this turd dyno'd a year after I had the motor built. Bryan from PCMforless.com was in the area at JDs Auto and Performance and did the tuning. Ended up with 455whp/445tq through a loose converter, auto and a Ford 9". I'm very pleased with the results.



Video (Droid video camera):

http://www.youtube.com/watch?v=uW4zAJPoSG8

 

Real nice numbers! But what is up with the big dip at 4500 ? I don't look at many dyno graphs, so if this is normal, I'm sorry.

 

That's where it down-shifted. It's an auto.

 

You lost 50hp when it went to downshift!

Very nice numbers, I would be proud of them that is for sure. I want some ported heads now

 

what cam, and what poured volume on the ports (heads)?

 

The cam is an AI custom billet grind...237/242, .600" on a 108 lobe, and the heads are 200cc CNC ported stock castings.

 

Ah, 108 lobe. gotcha! LE likes those lobes as well doesnt he? hyd. roller correct?

What did the heads flow? Thanks for the dyno graph. She made great power!

Is the graph all screwed up cause of the converter? It's up, then down, then back up.

I will be starting up my 421 cid in June prob, and I want with a similar cam, and similar size heads (AFR's) then you, and almost 40 more cubes.

I guess the question I have is how does it rev to over 7000 rpm's?

 

Yeah, the converter makes the graph all funny-like. Typical autos.

I'm not sure about LE stuff - I've had too much success with AI.

AI has a flow sheet on their webpage, but around 290+cfm if I remember right.

421ci? How are you planning on doing that with an LT1?

Bryan actually stopped the pull around 7k...he said the converter had something to do with the RPMs extending past 7k. I don't really know how to explain it, but it made sense at the time.

 

It's not a LTx. I hate the opti ****. Its a SBC1 with a miniram.

Was this a dynojet or a mustang dyno or which? It's nice that Bryan was there to assist you.

I am expecting slighty higher numbers (but not by much) with that stroker power that you want under the curve.

 

Cool man...

The tuning was done on a Dynojet.

 

You as well. Thanks for that.

I'll send you a pm.

 

dude that is amazing, congratulations

do you drive it on the street at all, i am guessing it would not be too bad, that cam has more duration than mine, but lift and lsa are almost the same. i daily drove mine for a year with that

 

That's awesome man! You'd be near 500rwhp through a manual! And that's on stock LT1 castings!

 

lol I seen 421CI and I thought someone was going to attempt it, I got all excited....

 

It is a 421, but it doesnt have an opti. It will smoke alot of LTx's, lol.