Hi, I was here on your forum a few months back asking if anybody had a MR on top of a 383-434 motor and if yes, what was the exact combo and results.

I remember a few of you said you were in the finishing stages of a MR on some cubic inches, but were not quite done yet.

I was hoping you had finished and perhaps had some et and/or dyno result information you could share at this point ?

You would think it is easy to find such combinations on the world wide web, but actually its very difficult to find a MR on top of some cubic inches. With the exception of email buddy Bowtye8 (Dennis) in his 383 MR 85 Vette, I cannot find any proven examples.

I am seriously considering a move from the Superram to Miniram, but really need to study a few more MR set-ups first.... thanks for any information.

Todd


------------------
85 Vette
383 SR Motor
11.55 @ 117
1.552 60 foot
http://corvetteforum.net/c4/beach_bum/

 

Hi Todd85, you have a great site with lot of info and your car is fast. I am sorry I can't answer your questions but I have been looking for people with this combo too, because I actualy began putting my 377 MR together and I don't no yet wich cam to use and what I can expect from it (HP).Anyway when I'll be done hopefully before winter I'll post the result. MY car is an 87 IROC that came with a 350 TPI and 700R4. The new engine-ZZ4 bare block with
-Scat 3.75 crank
-Crower 6" stroker rod
-Wiseco flat top piston(will have 10.66 to 1)
-AFR 190 heads
-MR intake
And all this will be back by a Mcleod street twin and a T56 tranny that came from an 1995 Z28. And to much modifications on the car to list it all.

The questions I'm trying to get some answers to is that I'm not sure wich cam to use yet and what gears to use at the back 3.73 or 4.11 ???? If you can help me on this Todd or anybody I would appreciate it. THANKS

------------------
1987 IROC w/T56 and a 383 TPI in the works

 

I just got my 377 w/ Miniram running this weekend. I used a solid roller cam 242/248 .570/.576" 112ls. It idles real nice at 900 rpm and the brakes work fine, no vacuum problems. I still have some tuning to do so I don't really know how well performs. Shoot me an email next weekend and I'll let you know more.

------------------
87 IROC-Z
Minirammed Solid Roller 377

 

Irace87,

I'm not sure on what cam to use with a MR on a 377-383 motor at this point. I invite you to have a look in my below webpage and go to the "Interesting Links" section and click on the "2 Stroked Vettes" link... both of these are are running the Miniram with solid rollers and both are stickshifts as well. Both have done their homework thoroughly so I'm guessing their set-ups might not be bad ones to copy. (Both are also running in the 11's)

With your gear question... I'm not sure what the tranny gears of a T56 are... but I'm guessing 4.11's would improve your 60's a hair over the 3.73's....but not sure if you want to go that far with a street car... more of a personal opinion thing to me.

Scott, I look forward to hearing your results. Good Luck.

good luck
Todd


------------------
85 Vette
383 SR Motor
11.55 @ 117
1.552 60 foot
http://corvetteforum.net/c4/beach_bum/

[This message has been edited by Todd85 (edited August 13, 2001).]

 

Well, the T56 has pretty crappy gearing (by that I mean high) so I'd use 4.11s if you can do so with your posi.

Where did you guys find blocks and rotating assemblies for your 377s? I plan to do that one day, maybe next summer, and I was curios as to where the find the parts new, I don't want salvage yard parts.



------------------
1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Accel High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, Jet TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)

 

i wouldn't bother spending all that money on a miniram. just buy an accel or holley EFI intake and be done with it. The carb intakes work best with n/a cars it seems. that is what i'm doing.

i'm using a holley intake with brodix track 1's on a 377 (destroked 400) and solid roller. this is my motor for next season i'm in the process of putting together

 

Dan87IROC-Z
I bought all the parts new for my 377 and this what I use.
-ZZ4 350 bare block from GM dealer
-Scat 3.75" crank
-Crower 6" stroker rod
-Wiseco flat top pistons
if I would have bore the block 0.030 over it would have been a 383 but I didn't do it for one reason I had my stock block sonic tested and some cylinders had wall of only 0.082 thick in some area so 0.030 over bore = 0.052 NOT good
The ZZ4 block isn't really better with 0.094 wall thickness but since it was new I didn't need to have it over bore.
And ProchargedROC on of the reason I don't want to use Accel or Holley intake is that at the end it will look like any other carb engine. And I want to keep GM ecm for now.

 

I bought a new GMPP 4bolt main block, Scat 3.75" crank, Scat forged 5.7" rods, TRW lightweight flat top pistons. The block was new and didn't have to be bored .030 I purchased the Miniram, fuel rails and a Arizona Speed & Marine 58mm TB all for $1000 used so the big purchase of the Miniram was not that big of a deal.

I also forgot to mention I am using Brodix -10X heads. They were 210cc stock but about 217cc after full porting. With the 3500 stall The big heads really aren't bad to drive on the street. The converter flashes up and then the motor pulls hard from ~3000 to 6000. I haven't gone over 6000 yet because I want to get some more miles on the engine first, but I plan on spinning it somewhere between 7000 and 7200.

 

Todd85 - I'm one of those people, I'm building a 383, and was going to put a miniram on it. I've decided to get rid of the miniram, and stick with the superram instead - because I'd like to run some 12.0s with the superram and then get a set of accel runner hog them out, port the stock plenum and see how much the car slows down with th long runner set-up (hoping only 1-2 tenths). I'd like to keep the engine as stock looking as possible - sleeper. So I'll be selling the miniram. I just ordered my custom CC - 224/224 567/567 on a 114LS, hope it idles good, and pulls to 6000? What do you think of the cam? I will dyno the engine with a carb just to get some #s, hoping for 450HP/450TQ. But I'm still not close to having it put together - always something, my biggest hold up is the head porting, flowing the heads, the coatings, then assembly! I'm really draggin my but on this one.

------------------
91 B4C 305 TPI - SOON TO BE 383
TREMEC 5-SP, STOCK 1-BOLT REAREAND w/342 GEARS, K&N, AIRFOIL
EDELBROCK HEADERS, DUAL CAT TO HOMEMADE Y-PIPE & 3.5" SINGLE PIPE W/ FLOWMASTER, CRANK PULLEY, MSD, FUEL PRESS REG, COWL HOOD, WELD WHEELS
14.1@ 98MPH
-------------
OTHER RIDE
67 CAMARO - STREET CAR, BIG BLOCK, PUMP GAS
350TH w/ATI 10", 12-BOLT w/373 GEARS
10.92@125.2 1.55 60FT. ON MOTOR - ET-STREETs w/MUFFLERS

 

Hi RW91B4C,

Interesting plan you have on going backwards from the SR to the Accel runners. I think after you get the SR on it, there is no way you're going to want to go back to the large runners. You'll know what I mean after dialing in and running your SR motor for a while. As a note, there is nothing glaring wrong with your camshaft for a SR.... is it a hyd roller ? I do think you'll loose more than 1-2 tenths making the move backwards too. But I also think you can easily get your 383 SR motor into the 11's. My raceweight is 3520 and I am easily into the 11's every pass even on a spin pass. You should too. Just make sure you pay attention to the details and have somebody who knows what they're doing cut you a chip.

I think your goal on the dyno with the carb of 450/450 is realistic.

As a note on comparing the Accel large runners vs the Accel Superram. The one thing that always gets my attention is Lingenfelters two TPI 383 motors that they advertise. The first one is a 383 with ported D-port heads, 74211 cam and the Accel long runners... this motor is advertised at 395 HP and 450 ftlbs of torque. They then take the exact same motor and insert the Superram and 74219 cam and this motor is advertised at 440 HP and 480 ftlbs of torque. Obviously a big difference of 45 hp and 30 ftlbs of torque. That will equate to a solid 3 tenths and probably 4 tenths at the dragstrip in et and mph.

I like the idea of the Miniram, simply because it eliminates the intake from being the bottleneck on a 350-383 motor up to around 7000 rpm, but I just want to see a few more examples before I make the move myself. Having a tough time finding them. The reputation of losing gobs of low end torque is probably exageratted and in addition, I don't care very much about torque at 3500 rpm considering my torque converter flashes to 3600 rpm right now anyway.

gotta go,

cheers,
Todd


------------------
85 Vette
383 SR Motor
11.55 @ 117
1.552 60 foot
http://corvetteforum.net/c4/beach_bum/

 

Todd85
I'm hoping for some high 11s, but... my car is a dialy driver - it will never 60ft like your Vette WOW, which 60fts like my 67 Camaro! So I'm shooting for some 12.0s for now. Also my car is a 5-spd, so it will have some off the line problems, but it should pull some good mph. My car is 3470lbs with me!
Theres a member (TPI383) here the has a long tube runner set-up in the 10s on motor, it is a siamesed runner. I was going to hog the accel runners out and then start siamesing them to go faster, I think I could get close to the SR times! We both have big heads (215cc) the only major difference is the cams, he has a big solid roller, while I have a wimpy little hydrilic roller. What do you think the idle will be like, smooth? I think I'll have Ed Wright do the chip.
But that is my goal to break into the 11s with a long tube, that would be a sleeper!
The 2 LPE engine you compared have different cams, which I think makes most of the power difference. Thats why I wanted the largest cam possible with a good idle, and alot of lift ~ for the heads. I found that lobe in the back of the CC catalog, and had them grind that both intake/exhaust with a wide LS angle. I think it should work good with a SR and be on the big side (just the way I like cams) for a long tube.
Did you ever track down the couple of guys here running the miniram with 400+ci motors?
Their set-up probably is not as impressive as your Vette! The only thing I can think of is the Hoover Vette, not too many low 11/high 10 sec. miniram car around. hope you find the info you're looking for. I say build something a little milder then the Hoover - less cam, more streetable!

 

I have a min iram on my 406.
Here is my combo

AFR190 (out of box 260CFM cfm MAX @ .500 @ 28")
CC hyd roller 230/236 .510/.520 114lsa
9.2:1 compression
55# injectors
long tube headers, 4" exhaust
58mm TB
Vortech S-Trim

My best so far is an 11.31 @ 120.2mph. I am hvaing some SERIOUS problems with my supercharger belt slipping so my times are not indicitave of what I SHOULD be running. My short times are 1.60-1.62 range normally with a 1.57 as my best.

I am working on a brace for my blower bracket and the I will be back at the track. Matter of fact, we are welding up the brace tonight. I hope....

Anyway. I am going to try an experiment. I have gotten hold of a Holley Strip Dominator intake. it looks a lot like a vic jr intake. I got it free. I purchased 8 injector bungs, and a length of fuel rail. I am going to weld up the intake for EFI, build an elbow to bolt to the top of the intake, and use an Accufab 90mm Mustang style throttle body. I want to do some side by side comparison with the mini ram/58mm TB. I am thinking the carb intake is going to work simply because it has better air distribution properties but time will tell. If it doesnt work better, I will sell it and stay mini ram.

Feel free to visit my webpage and read of my progress. I keep it quite up to date with what is going on.

Here are some photos I have.




------------------
-86 IROC
11.31 @ 120.2 mph
-=ICON Motorsports=-

 

Holy crapola !!! Thats tremendous... I'd like to gather all of the information on that set-up. Do you know where I can find it ?

Quote:

<font face="Verdana, Arial" size="2">Did you ever track down the couple of guys here running the miniram with 400+ci motors?
Their set-up probably is not as impressive as your Vette! The only thing I can think of is the Hoover Vette, not too many low 11/high 10 sec. miniram car around. hope you find the info you're looking for. I say build something a little milder then the Hoover - less cam, more streetable!

I'm still trying to find some more MR examples... I know they're out their, just hard to find.

Yeah Hoover's (Phil) Corvette is great, he's an email racing buddy I've communicated with hundreds of times... any set-up that can run 10.6 @ 128 on all motor at full raceweight and be a daily driver is just about perfect. However, his is a LT-1. Some subtle differences between the MR and LT-1.
(You can link to his webpage from my webpage in the "Interesting Links" section.)

Good luck on your set-up and let me know the results, should be interesting. I hope you reach the 11 second goal, which is probably very doable.

talk to you later
Todd


------------------
85 Vette
383 SR Motor
11.55 @ 117
1.552 60 foot
http://corvetteforum.net/c4/beach_bum/

 

Great set-up Guido... thanks for the information !! and let me know how the new intake works out.

cheers,
Todd

 

How's this for a balanced 383 Miniram buildup in progress?

AFR195cc Fully ported heads w/2.05/1.6 valve
Isky roller cam 225/234 .505/.530 112LSA @.05
58mmT-body,24lbSVOinjs.,DFI tuned by Pro
Pro-Built700 Tranny/10"2200-2400non-lockup TQ
1.75"SCHLT headers,3"collector,y-to 3.5"CB
9"Ford by Currie w/3.50 gears
No A/c,no A.I.R. Cat-less
87 Pontiac GTA daily driven!
Flat 12 all N/A e.t.'s or 11's with traction mods

Will post times when done.

What do y'all think of combo?
What should I change?
Expectations realistic?

 

Hey Guido
Hows the 4" exhaust sound? I'm building something simular, a 4" Hooker aerochamber under the passenger seat, straight over the axle to a Dynamax 4" ultraflow on the right side of the gas tannk, like yours. I figured 2 mufflers would sound a little quieter
Also, hows your cam idle, rough or mild with the 114LS? My Ford~5.0 buddy tells me those EFI single planes make the best power on the mustangs Hope it works out for you. Thanks

Todd85
I'll try to find the guys site - the 10 sec 383 TPI car.

------------------
91 B4C 305 TPI - SOON TO BE 383
TREMEC 5-SP, STOCK 1-BOLT REAREAND w/342 GEARS, K&N, AIRFOIL
EDELBROCK HEADERS, DUAL CAT TO HOMEMADE Y-PIPE & 3.5" SINGLE PIPE W/ FLOWMASTER, CRANK PULLEY, MSD, FUEL PRESS REG, COWL HOOD, WELD WHEELS
14.1@ 98MPH
-------------
OTHER RIDE
67 CAMARO - STREET CAR, BIG BLOCK, PUMP GAS
350TH w/ATI 10", 12-BOLT w/373 GEARS
10.92@125.2 1.55 60FT. ON MOTOR - ET-STREETs w/MUFFLERS

 

Actually, its not that loud.

Sounds unique though. Some people say it sounds like a WW2 airplane???

Weird. it sounds wicked idling though!

It idles around 1000 rpms smoothly.

I say good luck fitting that 4" muffler under there. It is tight enough with 3" pipes under there like I have now (coming from header collector).

------------------
-86 IROC
11.31 @ 120.2 mph
-=ICON Motorsports=-