Todd85

I was asked via email by one of your board members to post my dyno results and set-up information over on your board, I assume this is the section he wanted me to post in.

I have a 383 with a Superram, ported Dart 2 heads, LPE 74219 cam, Hooker Headers, Automatic with a Vig 3000 rpm converter and 3.45 gears in a 85 Corvette.

It runs consistent 11.6-11.7 et's when I hook with 1.55-1.60 60 foot times. With a best of 11.5. Mph's are typically around 116, with a best of 118 with a lightweight friend of mine piloting. (Ie 3400 lb raceweight versus 3500 lbs.)

The dyno results are about what I expected considering this is a fairly mild motor with iron heads and a low 9.8-1 compression ratio, and fairly mild cam.

For more detailed information, click into my webpage.


Hope you enjoy.





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85 Vette
SR 383 Motor
11.67 @ 116
http://corvetteforum.net/c4/beach_bum/

Drkhrse89

iTrader: (1)

That is one nasty tq curve. Do all SR have that type of tq curve? Are they set up for that? Just curious.

camarojoe

Hey Todd, or anyone else, what do you think the hp and torque numbers would be on a 350 with the exact same setup? Just curious if a stroker engine has that much more torque, cause those are some awesome numbers.

Todd85

Drkhrse89,

The torque curve shown above is with the torque converter un-locked. This is a two edged sword... on one hand it hurts peak HP by around an estimated 20-30 HP in my case, however it creates a sizeable torque lump spike in the lower rpm's. I would guess that if I had the converter locked, the peak torque would have been in the 420-450 ftlb area, however the peak HP would have been more in the 380-390 rwhp area. However, I have single disk PI Vigalante torque converter that really isn't built to have the converter locked at wot... someday I may upgrade to the 5 disk... dunno.

But to answer your question... yes all Superram equiped motors will create very strong low and mid range torque #'s.

CamaroJoe,

Its always hard to estimate.... but considering if a person made know other changes besides increasing cubic inches, I would guess its probably only worth 25 HP give or take a few, however the torque in the low to mid range is probably 40-50 ftlbs stronger with a stroker.

As a gauge, there is a Corvetteforum member that has basically the same set-up as me, but with a few small improvements such as AFR 190 heads versus my iron Dart 2 heads and another point of compression, plus he races at around 3300 lbs versus my raceweight of 3500.... However he's running on a 80,000 mile 350 ci stock shortblock.... he has ran 11.73 @ 116.xx with 1.63 short times with his protorque 2800 converter.... pretty impressive combination for a stock shortblock. We estimate his HP at a tad over 400 HP, which is within 25 or so of mine.

Food for thought anyway....

later
Todd

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85 Vette
SR 383 Motor
11.59 @ 116.88 with 3500lb raceweight.
11.54 @ 117.96 with 3400lb raceweight.
http://corvetteforum.net/c4/beach_bum/

86TpiTransAm

If a stock TPI setup could flow as well as the SR it would produce more torque than that! Longer runners = More Torque ....plain and simple!!

But unfortunately the stock TPI setup can't flow that well! Oh well! "Give up to gain"

Todd85

86TPI,

Thats exactly what a Superram is... its a long runnered set-up that does flow more. However, do not make the mistake of figuring how much torque you will make based upon the runner length. The runner length and diameter more determine where the torque peak rpm will be created as to the amount of the torque peak.

As a small comparison... obviously most have read LPE's price book... you will notice that the 383, Long Runnered, 74211 motor is advertised at 395 HP and 450 ftlbs of torque, whereas the exact same motor except with the SR and 74219 is advertised at 440 HP and 480 ftlbs of torque.

Point is, the runner length helped dictate where the peaks occured, but not the actual peaks themselves. Ie, the SR made 30 more ftlbs of torque than the same motor with aftermarket long runners.

food for thought anyway.

later
Todd

camarojoe

Super ram or paint job, super ram or paint, I think I'll probably save up for the super ram next after reading this. Thanks for sharing your info, Todd. It doesn't seem like a lot of people on this forum use this manifold and get results like yours (11's N/A), but at least we know it's possible. Later.

88SS6SPEED

iTrader: (2)

Hey "BEACH", nice to see you over here. That Vette is badddd assss , and without ALUMINUM HEADS also.

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88 Monte SS 355 TPI/LT-4 HOT CAM/AFR Hydra-rev/ T-56 6-Speed/1-3/4" full length headers/3" X-PIPE assembly/ 8.5" G-80 rear with 3.73 gears.
http://community.webshots.com/user/ssynergy
www.y-t-g.com/88monte

86TpiTransAm

That's because it's a VETTE, NOT a thirdgen!! I've seen lots of 11's on this board from people running Miniram though!!

Todd85

CamaroJoe,

Get the SR... they're funner than paint.

88SS,

Hey whats up, this is a very, very nice forum... lot of good information, especially in your chip section. I'll probably be back.

86TPI,

I'd think a 3rd gen could easily run solid SR #'s as well... aerodynamics are similar, and I assume weight too.

I like the Miniram intake too... not as peaky, but a much broader torque curve that really responds to more gear and stall.

later
Beach Bum

camarojoe

[QUOTE]Originally posted by 86TpiTransAm:
[B] That's because it's a VETTE, NOT a thirdgen!! I've seen lots of 11's on this board from people running Miniram though!!

I guess maybe you misunderstood me, there's not many people on this board running a SUPER RAM, not to be confused with a Miniram, that are running 11's. I also agree that the f-body's and vettes have similar aerodynamics (hatchbacks), but I think the vette defineitely has the advantage in the deep end (100+), all of which wouldn't matter much in the 1/4. But then again I'm not an aero-space engineer.

87Z-ya

iTrader: (1)

Actually the third gen f bod is more aerodynamic than the c4 vette. Less frontal area. The 85-90 ta is one of the most slippery designs ever. This is why many people use them in bonneville and silverstate type events.

F22Raptor

sup tyler?
did you go to the shootout? how was it?
rick

Kenn

Vettes have 3 advantages imo over F-bodies - less weight, better traction and dual exhaust as far as drag racing goes - Ive seen /read about more than a few C3 and C4s that run low 12s - 11s with engines similar to what we build for our f-cars - for instance my 355 tpi has AFR 190 58cc, LPE .525 lft 219 dur, 1.6rr, edelbrock base and runners - and I ran 13.8 at 100mph with Edelbrock TES and 3 inch catback stock suspension, T-5 and 3.73 gears- the same drivetrain in a C3 will net low 12s-
that said I've been modifying my TA to eliminate the some of the differences - have dual exhaust now Hooker lt, X pipe, Dyno Bullets- traction is great with homemade ladder bars in the stock LCA location using relocation brackets and Kuhmo victor racers- weight I'm working on my TA is convertible- I hope I lay down some good #s soon low 12ish-
$0.02

87Z-ya

iTrader: (1)

You should have been there. I came in 2nd place in my class, got a big trophy and 75 bucks. In semi finals I ran a Ferrari 550 mondello and wiped the track with him. Its all on tape. There was alot of bad *** street cars. Most come out on friday nights and street race.