Nice stroker 383 on the dyno today

Nice stroker 383 on the dyno today - 01/18/13 09:13 AM

Going in a 69 RR, daily driver on pump gas.

4.250 Source stroker kit, 10:1, ported stealth heads, rpm intake, 850DP, TTI headers, custom IMM hyd. roller cam, PRW stainless 1.6 rockers.

dyno video: http://youtu.be/N9kiYW5khYc

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Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 09:14 AM

Sleeper look:

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Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 09:15 AM

Dyno pg.1

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 09:15 AM

Dyno pg.2

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 09:16 AM

Dyno pg.3

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 09:17 AM

Graph

Posted By: tboomer

Re: Nice stroker 383 on the dyno today - 01/18/13 12:31 PM

Nice,Brian! Gonna be a happy customer when he hits the go pedal!

Posted By: RAMM

Re: Nice stroker 383 on the dyno today - 01/18/13 01:03 PM

Tight LSA on the cam? Looks like your C.F. was just about 1 to 1 that day-nice weather. Today its - 14.8 F my C.F. would correct down not up! Nice engine that is a ton of torque. J.Rob

Posted By: JohnRR

Re: Nice stroker 383 on the dyno today - 01/18/13 03:49 PM

Nice sounding engine , what do the heads flow ?

Posted By: Mr.Yuck

Re: Nice stroker 383 on the dyno today - 01/18/13 03:51 PM

good numbers...

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 05:16 PM

Quote:

Tight LSA on the cam? Looks like your C.F. was just about 1 to 1 that day-nice weather. Today its - 14.8 F my C.F. would correct down not up! Nice engine that is a ton of torque. J.Rob

The TQ curve looks wild, but if you plot it out over a wider span it would look different. If you notice, it looks like it really drops fast, but it's not too bad for a mild port.
Yes it's been good weather lately!!

The heads flowed 270 at .400 and 292 at .500.

Posted By: 383man

Re: Nice stroker 383 on the dyno today - 01/18/13 05:26 PM

Very nice with good #'s.

Is that the RPM intake ? The Indy dual plane I use kinda looks like an RPM intake on steroids. Its not far from my combo but I use a 4.15 crank in a .030 over 440 block for 493 cubes. I use an 850 DP and run on pump also. I have EZ heads and 10.6 comp and I use a solid flat tappet cam. That should run pretty good in your Roadrunner. I guess I make about 600 hp in my 493 so far to run 10.70's at 3700 lbs. You should run easy 11's and maybe very low 11's. Good luck , Ron

Posted By: MR_P_BODY

Re: Nice stroker 383 on the dyno today - 01/18/13 06:41 PM

Brian dont you think it was a bit fat on the top end...
looks like it was progressively getting fatter....
that has some nice torque for sure.. what was the CI
on that

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 06:50 PM

That wasn't the last pull. We ended up jetting it down some, got the AF's in the high 12's and low 13's. Gave up just bit of power, 555HP and 605TQ but averages were same so no big deal.

CID is 496. The stealth heads needed alot more port work but price was king on this deal and this is what the customer wanted (550HP and 600TQ).
It's a real driver, no track time plus running power brakes, steering and A/C so we had to keep it civil. But not bad for 14" of vacuum right at 850rpm. It idled down to 750rpm, but didn't sound happy so 850 was much better.
Brian

Posted By: MR_P_BODY

Re: Nice stroker 383 on the dyno today - 01/18/13 07:40 PM

Real nice set up... he'll be a very happy camper

Posted By: challengermike

Re: Nice stroker 383 on the dyno today - 01/18/13 11:21 PM

Keep an eye on the rockers lock nut. I had to replace mine with harland shrap nuts to keep them from backing off. Other than that i like the rockers. It took about 600 miles for them to start backing off.

Posted By: Dunnuck Racing

Re: Nice stroker 383 on the dyno today - 01/18/13 11:32 PM

Real nice build Brian ! Can you tell us about your cam choice or does it need to stay under wraps for now? I love the stealth looks!
Keith

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/18/13 11:51 PM

Quote:

Real nice build Brian ! Can you tell us about your cam choice or does it need to stay under wraps for now? I love the stealth looks!
Keith

So far no problems with the nuts backing off...I've used about 25 sets of these things so far, but thank you for the heads up!

Cam is 244@ .040, .580 lift on a 113lca in 2.5� advanced.

Posted By: Streetwize

Re: Nice stroker 383 on the dyno today - 01/19/13 12:32 AM

Awesome job, Brian!

How do the PRW's compare to the Comps? Are they an exact copy?

Love to see a side by side with a 440-2D on that....484 is it?

Posted By: Chris2581

Re: Nice stroker 383 on the dyno today - 01/19/13 12:39 AM

NICE!!

I'd like to have a engine like that one.

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/19/13 01:35 AM

Quote:

Awesome job, Brian!

How do the PRW's compare to the Comps? Are they an exact copy?

Love to see a side by side with a 440-2D on that....484 is it?

It's a 496 cid (4.31x4.25).
The PRW is bushed, and available in 1.6 ratio and are stainless, not chromoly. I like them alot!

Posted By: Abodyjohn88

Re: Nice stroker 383 on the dyno today - 01/19/13 02:26 AM

Brian do you feel the smaller bore of the 383 hurts performance significantly over lets say a 400 or 440 block, if all things were the same ( stroke, heads,intake, cam specs) the only differnce being the larger bore of the b440 and 400?. I have always wonderd why more people don't build Stroker 383"s. Could you tel us why people seem to forget about the 383 when it comes to building big inch strokers and racing engines. What are the downfalls of it? thanks in advance. If I don't go Stroker smallblock ive always thought about building a big inch 383 but most people I talk to say forget it and go straight to the 400 or 440. Thanks in advance good sir!

Posted By: Cab_Burge

Re: Nice stroker 383 on the dyno today - 01/19/13 02:27 AM

Time to paint the intake manifold the same color as the motor, put the coil on the intake and put some stock looking breather caps on it

Did you decide to put the wide LSA on the cam for the idle vacume due to the power brakes? Just wondering

What is the elevation of your dyno shop? Isn't it right around 20 ft. below sea level?

Posted By: CSK

Re: Nice stroker 383 on the dyno today - 01/19/13 03:11 AM

Quote:

Brian do you feel the smaller bore of the 383 hurts performance significantly over lets say a 400 or 440 block, if all things were the same ( stroke, heads,intake, cam specs) the only differnce being the larger bore of the b440 and 400?. I have always wonderd why more people don't build Stroker 383"s. Could you tel us why people seem to forget about the 383 when it comes to building big inch strokers and racing engines. What are the downfalls of it? thanks in advance. If I don't go Stroker smallblock ive always thought about building a big inch 383 but most people I talk to say forget it and go straight to the 400 or 440. Thanks in advance good sir!

i'm not brian, but the 400,has thicker main bearing webbing,& the smaller bore of the 383 shrouds the valves more than 400,440

Posted By: AndyF

Re: Nice stroker 383 on the dyno today - 01/19/13 03:23 AM

At higher engine speeds the larger bore 400 will work better. But for a real street motor like this one the 383 block works just fine. In fact, the smaller bore size might help reduce detonation a tiny bit.

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/19/13 07:06 AM

Quote:

Brian do you feel the smaller bore of the 383 hurts performance significantly over lets say a 400 or 440 block, if all things were the same ( stroke, heads,intake, cam specs) the only differnce being the larger bore of the b440 and 400?. I have always wonderd why more people don't build Stroker 383"s. Could you tel us why people seem to forget about the 383 when it comes to building big inch strokers and racing engines. What are the downfalls of it? thanks in advance. If I don't go Stroker smallblock ive always thought about building a big inch 383 but most people I talk to say forget it and go straight to the 400 or 440. Thanks in advance good sir!

I tried talking this guy into a 400 block, but he insisted on using his 383! I prefer the larger bore, and I'm sure it's worth some power but I doubt on a build like this it's worth more than 20HP.

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/19/13 07:08 AM

Quote:

Time to paint the intake manifold the same color as the motor, put the coil on the intake and put some stock looking breather caps on it Did you decide to put the wide LSA on the cam for the idle vacume due to the power brakes? Just wondering What is the elevation of your dyno shop? Isn't it right around 20 ft. below sea level?

I use the wide lca for better vaccum and to spread power out better so there is some girth to the power band. I was held to a very tight budget on this build so my leash kept me from doing more

Posted By: Brian Hafliger

Re: Nice stroker 383 on the dyno today - 01/19/13 07:09 AM

Quote:

At higher engine speeds the larger bore 400 will work better. But for a real street motor like this one the 383 block works just fine. In fact, the smaller bore size might help reduce detonation a tiny bit.

Yes I agree, smaller bore will curb detonation better than a larger bore. Still like the large bores though...

Posted By: jcastle1

Re: Nice stroker 383 on the dyno today - 01/19/13 03:10 PM

So, what did a build like this cost the customer?

Posted By: fishy340

Re: Nice stroker 383 on the dyno today - 01/19/13 03:14 PM

good little motor for the street.

Posted By: 69dart

Re: Nice stroker 383 on the dyno today - 01/19/13 08:31 PM

I love the little 383's. You can pickup complete 383 cores for $50 all over. I just dropped off some stealth heads, .567 roller cam and 1.6 MP rockers for my new 383 to the engine builder this morning.

Mine is very similar except I stayed with a stock stroke, 12 to 1 compression, M1 Single Plane and solid roller cam. The builder is estimating it will make over 500-550 HP but I'm skeptical.

We'll see soon enough.

Congrats on another successful build.

Posted By: 69Cuda340S

Re: Nice stroker 383 on the dyno today - 01/20/13 04:28 PM

Excellent work on that engine build. Sounds awesome!!

Posted By: OhioMopar

Re: Nice stroker 383 on the dyno today - 01/20/13 07:07 PM

That's cool! Being someone that needs a low deck engine for his Bee, a build similar to this seems very tempting. Don't know if I would stick with a 383. But I would like to.

Posted By: BSB67

Re: Nice stroker 383 on the dyno today - 01/20/13 09:12 PM

Thank you for sharing. Intersting.

Posted By: Jeremiah

Re: Nice stroker 383 on the dyno today - 01/21/13 06:33 AM

I will be in touch for a set of hydraulic roller lifters for our 511 in the future. I like these sleeper builds.

Posted By: RemCharger

Re: Nice stroker 383 on the dyno today - 01/22/13 03:25 AM

Quote:

I love the little 383's. You can pickup complete 383 cores for $50 all over. I just dropped off some stealth heads, .567 roller cam and 1.6 MP rockers for my new 383 to the engine builder this morning.

Mine is very similar except I stayed with a stock stroke, 12 to 1 compression, M1 Single Plane and solid roller cam. The builder is estimating it will make over 500-550 HP but I'm skeptical.

We'll see soon enough.

Congrats on another successful build.

With some good headwork I would say over 500 and without just under.