all casual like... lol

 

Keeps goin

 

WOW!! Looked like a 180' power wheelie!!

I take it you turned it up??

 

Lol not a whole lot. Just cooler air and ice cold intake temps helped

 

Wow that is crazy. I guess that Dart SHP block holds a little more power than they rate it at, huh? Justin, I'm curious about your ignition timing with your setup. Care to explain what your timing curve looks like? I'm especially curious how much advance it'll tolerate at that boost level. Thanks.

 

Lol with the ls1 pcm the timing table runs based on an air flow calculation. It runs to 1.2 g/cyl. This particular motor maxes that table out at 3-4 psi 4000ish rpm.

So there really isnt a curve so to speak. On 28-29 psi boost its sitting at 25 deg timing on vp110 gas. Not sure if it wants more yet or not. Havent gotten to test that yet. Car didnt quite run as hard as i thought for the boost value last night. So may be "blowing spark out" but hard to tell. Felt like it was alittle unsmooth but log didnt look to terrible. It went 165.7 in hot air at 1 psi less boost. Last night was better air but only a 1 mph gain. So not sure what happened

My buddy tried turning his car up and more boost slowed down a good bit. Log looked similar to mine. He thinks its spark issues and got new coil packs. Firecore. Holley hp system so hes gonna try that out. If it improves i may look into that or mess with dwell settings to see if i cant get this thing going 170+. I was hoping to see 168 last night on same boost as 8.51 pass. It picked up a tiny bit but may still need to tweak tune. Hot air would have made car run richer. Cool air leaned it out some so may not like that as much

 

nice job , should me some much lower times in it as the nice fall air starts moving in

2 things id like to point out and suggest

#1 plz put a chute on that thing , u may not need it to stop but if u ever get that thing sideways it could save ur and the cars ***

#2 and this one isnt easy to do , try to never sit on the line against a slower car letting them get out on ya , ive seen way to man bad things happen when a faster car sits on the line and runs into the back of a slower car when one of them goes into the other lane

 

1) yes we are planning on that soon. Gonna have my buddy at the local shop kinda help out on it so they get their name out there abit more. Car has a local rep now so its nice to help the shop out if they can associate their name to the car

2) this was my buddys lightning. If it hooks and runs right it should be a mid 10's truck. We were racing and told me to give him 2 seconds and thats what i did before i moved.
Normally i move out first as you say, dont wanna see them get squirrly and cross lanes

 

I was looking at your build and I have a question.

So you started off with that 383? Sold the short block, kept the heads, ect?

You got a shp block with a stout rotating assembly...

What shp? bore/stroke?

1 or 2 piece rms?

 

Plan was to keep my old 383 shortblock and just swap heads but i was limited on boost with that block. I knew i wanted more so i sold everything except the heads and valvetrain for most part and got the shp

400 bore 350 main 2pc. Callies rotating assembly.

 

K thanks. One more.....

You are getting +1000hp out of that shp?

 

Last dyno was 1097 with fuel pressure issues. Fixed that and ran 2 more psi to run 165-166 so i think its closer to 1150-1175 now

 

So Dart, shp blocks are way way under rated then. Ive been doing a bunch of searching and, well I'm sure your well aware of what dart rates them at, But I've seen/read builds of them all over the place from 500, to, well yours. I did see one that posted 1200hp w/nos I believe. Crazy.

Your stroke is 3.75 right?

 

Badass. Your car is alot like what I want mine to be.... something I can still drive and hauls at the track. It would be a good drag week car if you ever wanted to take it

 

Bad *** car!

 

Yup 3.75


Look at the 7 sec camaro build. Charlie has same block and makes 100-200 hp more than me. Runs 170 mph so far. They are underrated for turbos. I wouldnt use it for heavy nitrous. May be the shp pro block but thats it

 

Yup just doesnt have all the safety stuff yet for the times and it never will get a 25.2 or whatever cage it needs

I want 3.08 gears to help on highway

 

Would need a 25.5 to go down to 7.50s. I don't want the funny car cage, but I may go ahead and do it anyway. I'm not all that big of a guy at 5'8 165. I think I can fit in there ok with it.

 

Making power is relatively easy these days. Its the rest of the stuff that adds up like cages and safety stuff to be allowed to go that fast lol. A 25.x cage will set u back 7-10g easily

 

Thanks for sharing the info. That seems like a lot of timing at that boost level but it seems once you hit a certain level you can basically flatten out the timing. Which sounds like it works well for you since you are way off your VE chart! Are you using any kind of knock sensor? Have you been just creeping up on the timing on the dyno/track to figure out where you want to be?
Sorry for all the questions but I'm intrigued by all of this!
I believe you are running LS coils, right? I haven't heard much about spark issues with those under boost. My brother and a friend are running them at around the 800whp level with no issues but I'd imagine the spark energy required to spark the gap goes up exponentially with cylinder pressure. What are your plugs gapped at? For what it's worth on my boosted Honda when it had trouble sparking it was very obvious. It'd go from perfect to very rough in as little as 1-2 psi difference. Seems you hit a certain threshold and it gets bad quickly.
Eagerly waiting for more updates!

 

All combos are different. I was surprised this setup requires this much timing. I'm still trying to see what it wants the most. Dyno had fuel pressure issues so not sure if thats why it didnt seem to respond a whole lot between 23-25 at peak hp but did make alittle more trq. But basically timing was slowly added in til it stopped making power. It has knock sensor and it seems happy so far.

Plugs look ok. But never checked them after a pass. Just when i got home next day. May not mean much at that point.

Plug gap is .018 now. Been .025 last few times out and seemed to run great. I was thinkin it needed to be tighter cuz my friends setup is having issues. He runs holley hp now tho, and cant adjust dwell the same as hptuners i guess. He got firecore coils now. Hope to see how they run next week. I plan to go out too. Back boost down to 26-27 and see what mph i can get there with fuel and timing, and see if spark doesnt blow out. Hard to say if it is or not. Dont feel much but that last run didnt feel super clean. My friend says he turned up boost and ran fine but trapped several mph less! So he thinks spark

 

dont know if it could be an issue on your car, but we had a discussion the other night about a friends car. it wont pick up any after a certain boost level. like if he bumped it up from 20psi to 25psi the trap speed remained the same.
pretty sure its his valvesprings. they are still too weak, and the valves are floating with all the pressure on the backside of the fairly large valves in his heads.

 

I dont think its float. I had that before. This car doesnt seem to do it but i will def keep an eye on all that as well.

I picked up but didnt pick up as much as i expected. Next couple outings i will play with things more and see what i find

 

Welp one more thing for the car. Now need to save for the pack, they are expensive





Fabbed up using some 095 wall 1 3/4 cross tube and some 1.5" .083 wall stub outs. 1/8" 6x6 plate and 1/8" gusset under the stubouts.

Slip fit tube 1.5" into the 1 3/4. I messed up and went .095 wall 1.75 and thats 1.56" id on a 1.5 tube so i welded beads to make up the difference. Should have used .120 wall

 

Yeah, it's about that time because that street car is fast man!! Better safe than sorry, my cage is coming soon.

 

New best 60'. 1.29'. May even have been on back tire i cant tell



200 rpm more on launch but right before 1/8 lost the charge pipe coupler again. I need to do a better job sealing that one lol moved the t bolt clamp over and snugged it down better next pass but spun to a 8.58

Tune changes i had made a tiny fuel adjustment in mid range rpm but also added 1 ms of spark dwell. It seemed to help. Third felt stronger and pulled smoother. Problem was things were pig rich. My guess is spark is lighting off entire mixture now and no longer missing slightly which showed leaner. Fuel change shouldnt have made that much difference at this magnitude. 1 point richer.

So hope to dial back fuel and start to see more mph

 

on my post above about my friends car with the valvesprings.... new springs didnt help. his car is running 5.90's like a bracket car on 10psi. on 20psi, it still goes 5.90's and picked up 1.5mph. wtf.

 

What motor setup and ignition system?

Mine didnt change much from .024" gap to .018". My friends also didnt change when goin down even tighter to .016

Mine however greatly smoothed out when i increased dwell in the tune

Heres the 1.29 60 and u see the puff when charge coupler separated

 

Heres the 8.58 with spin but i recovered with quick pedal game lol

ran similar to my 8.51 on same tune however this was a full point richer now from dwell change lighting off the charge now. Have back the fuel down some. Rpm log was much smoother

 

Dang son!!

 

355 lt1 with 221 trickflow heads. hes running it with holley efi and ls coils.

 

Whats dwell setting? I believe its 5 from holley? That should have been enough to fire them. Also depends on what coils exactly lol

 

You have come a long way with the car.

 

Thanks! Lol combo has been relatively same since 2012 motor wise, its just taken this long to really turn it up and work bugs out. I had a lot of problems. I changed intercooler systems and turbos but for the most part its same setup. Amazing how well it responds to more and more boost lol


How has your car been? Havent seen alot of updates lol

 

I have pretty much reached the goals I wanted with my car. The California smog laws but a limit on things. I do have a 1965 Buick Skylark with a LS3 based 427 that I play with and don't have to worry about any smog rules.

 

Truly an inspiration Justin, as soon as I'm done with the break in period on mine I can try to do the same. Probably wont get anywhere near those times though

 

My thoughts exactly. Great job on the car, I enjoyed watching the videos and I like the track announcers reactions! I agree, the big wheels on front make it looks like it shouldn't be that fast!

 

So i cant figure out how to start a new feed and you guys seem to know what you are doing. Im having a problem with my throttle position sensor and transmission. So i bought a 1984 camaro sport coupe with a carbureted 305 and a 700r4 tranny or 4l60e if you will with overdrive. The car run fine and shift perfect. I wanted more power without putting a new engine in and wanted to see what i could do with a slow 305. With the engine still in the car i put a new cam,lifters,rods,springs,rockers,intake manifold,carburetor, HEI distributor,wires, plugs, timing chain and gears. And then transmission i drained the fluid put a new filter in checked for shavings to be sure and had none everything looked good. Anyways so it had a electric rochester quad jet on it with a built in tps in the carb. I pulled that junk off and put a edelbrock 600cfm with a electric choke not the best but better then what i had. Then pulled the stock distributor without HEI and put a HEI one on. got the car running tv cable hooked up nice and tight took it out for a drive and noticed that it goes into park, nutural, revers, OD and 1 low. BUT here is where i get lost my speedometor stopped working and When it is in OD it will not shift out of 1st gear and if i try to shift myself still nothing wont shift out of first and sometime acts like its in nutural. The only code showing is the TPS code. I dont know whats going on but it should be shifting but its not i know 700r4s are non electric so they say but im also told they are. I have a 305 in so putting a powerglide,th350 or th400 wouldnt be worth it to me unless engine swap thanks for the help if any.

 

Good air today and good track prep lol car liked it and worked tune in abit more


Then this



Last pass i was on a tear but charge pipe popped off. 1.28 60 ft new best 5.32 at 135.79 in 1/8. Coasted 8.26 156 1/4. Was up almost .9 mph by 1000 ft

 

Dang, makes me moist..

 

Im highly jelly.

 

Trying out the track exhaust lol bull horn dumps behind front tire

 

 

wtf..


-- Joe

 

Nice runs man! That thing is dead hooking out of the hole.

 

Dialed in with good prep that day. I gave it 1 deg timing and it went from 1.32 to 1.28 and really felt solid. Needs a drag sway bar tho or antiroll. Maybe a bag in right rear. We'll have to see

 

i have a wolfe antirollbar i might sell... its the one that welds to the housing and has single spherical rod ends going to the body.

 

I kick myself cuz this rear i bought had a antiroll setup on it welded up and i cut it off!!

 

lmao! oh the irony

 

Way it goes. Car twists a good bit, really compressing that right rear. I wonder if i could compensate with an airbag and stiffen shock setting on that side only