LT1-LT4 Modifications 1993-97 Gen II Small Block V8

357 Hyd Roller, Dart T4P Heads + Supervic Dyno Results

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Old 07-27-2011, 02:56 PM
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That car is sex!
Old 07-27-2011, 04:43 PM
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WOW! That is a superb setup, I am impressed. Even more so a road car!

Congrats, that looks like a fun ride.
Old 07-27-2011, 05:25 PM
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Very nice setup. I was going to end up with those heads, but I couldn't spend that much cash at the time. Bret does a VERY nice job. He did a custom cam for me a few years ago and it ran rather well.
Old 07-27-2011, 06:47 PM
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wow nice set up
Old 07-27-2011, 07:33 PM
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I see you ditched the stock-style oil pump drive with one of those dummy distributors. Which one did you go with? How well did it fit?
Old 07-27-2011, 07:46 PM
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Yup - looks nice. Nice power from 357 CI too.
Old 07-27-2011, 08:35 PM
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very nice!!
Old 07-28-2011, 01:28 PM
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Thanks again fellas.
Originally Posted by Speed Density
Even more so a road car!
Yup, with working A/C and cruise no less!
Originally Posted by joelster
I see you ditched the stock-style oil pump drive with one of those dummy distributors. Which one did you go with?
Actually I think you're just seeing the PCV adapter Bret made for the dist. hole. The PCV plugs right in there making use of the hole and keeping me from having to tap into the valve covers.

I did replace the oil pump drive with the billet Herron unit, but it's still stock style and I'm using the original stock gear (still looks perfect).
Old 07-31-2011, 11:54 PM
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Thats an awesome build!
Old 08-09-2011, 12:42 PM
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Jon,

Excellent job as always! Your stuff always impresses the engineer bone in my head.

Is that Chevy Orange on the block? Nice.

It looks like the bigger tires are on the heavy end.


Jon
Old 08-09-2011, 12:51 PM
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Originally Posted by Old SStroker
Is that Chevy Orange on the block? Nice.
They should all be painted Chevy Orange - it makes finding oil leaks a heck of a lot easier, plus it just looks cool.
Old 08-09-2011, 04:12 PM
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SuperVics work great on top of lt1s... my buddy has a carbed conversion in his 3rd gen with a modded supervic and with a baby 218/224 and longtubes he put down 340rwhp untuned running way rich. No hes upped the compression, mild port on the heads, and got a used LE 228/236 .592/.592 110lsa cam and its an utter beast. Killed a modded 2011 moded 5.0L by 4 lengths and runs 11.6@119. He has about 4gs into the build and car works wonderfully.
Old 08-09-2011, 07:09 PM
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Absolutely love the intake!
Old 08-10-2011, 01:36 PM
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Originally Posted by Old SStroker
Excellent job as always! Your stuff always impresses the engineer bone in my head.
Thanks!
Is that Chevy Orange on the block? Nice.
Close, but not quite. In person it's a bit more red and less orange.
It looks like the bigger tires are on the heavy end.
While I have run 315's all around in the past, I'm currently only running 275's in the front. They look bigger because I've widened the track a couple inches. The rear is lighter, but the rear tires still need to put down the power out of corners. With the adjustability in my suspension it's no problem to balance the car nicely even with a mismatch in size F/R.
Old 08-10-2011, 03:15 PM
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looking good Jon!
Old 08-11-2011, 12:11 PM
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Originally Posted by Jon A
While I have run 315's all around in the past, I'm currently only running 275's in the front. They look bigger because I've widened the track a couple inches. The rear is lighter, but the rear tires still need to put down the power out of corners. With the adjustability in my suspension it's no problem to balance the car nicely even with a mismatch in size F/R.
Yeah, especially with that strong torque curve. Flat is nicer than bumps...except on girls.

On track what is your working rpm range?


Jon
Old 08-12-2011, 05:21 AM
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Originally Posted by TwoFast4Lv
looking good Jon!
Thanks Ellis! Long time no see! I've been meaning to ping you for some words of wisdom...I'm thinking of swapping back to OBDII to see if I can squeeze out another 200 RPM before the damn PCM shuts down. As long as I'm staying hydraulic I don't think it's worth spending a pile of money for an LS1 or aftermarket setup, but the OBDII wouldn't be too difficult as I already have one I'd just need to figure out how to tune.
Originally Posted by Old SStroker
On track what is your working rpm range
5000-7000 for the most part. There are some spots on some tracks where I shortshift a bit before corners for various reasons so good torque in the 4K-5K range is still important, but mostly I'm rolling into the throttle in that range in those situations. 5K-7K is where it's really at for me.

One thing I'm really anxious to try out is my new .83 5th gear. Shifting a bit below 7K only drops the RPM to around 5700, so average power down the straight will be increased significantly.
Originally Posted by DVS LT1
But man is that some crazy hardware. Cast cooling holes.

4-piston calipers?
Thanks. Yeah, they're the 4-piston Brembo Monoblock calipers made for Porsche. Cast in holes is the claim for the Porsche/Mov'it rotors and whether they really are or not they are well designed so cracks don't spread and cause rotor failure. They do crack though, and tech guys and the track will frown on that so I recommend slotted or dimpled rotors for track use even if the OEM Porsche rotors work really well. The PF rotors I'm using now are dimpled.



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