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Topics - gnx7

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1
Parts for Sale / new GM hot cam from 480hp LS3 with springs etc
« on: December 06, 2023, 02:25:28 PM »
Customer bought a crate motor for his e36 swap and we put in something milder with less aggressive idle.

GM hot cam new removed from crate engine with valve springs and valve seals, keepers, retainers, etc.
$150 shipped to the lower 48

Duration @ .050" Lift( Deg): Intake: 219 / Exhaust: 228
Maximum Lift (in) W/ 1.7 Rocker: Intake: .525 / Exhaust: .525
Lobe Centerline ( deg): 112

email me for fastest response:  norcalmotorsport at gmail dot com

2
I remember someone on here makes the splined outer arms that slide onto the hollow speedway style bar and then the billet mounts.
Who was that again?

I have a buddy that needs one.

3
Drivetrain / huge gains from factory LS7 intake/90TB to MSD intake/103TB
« on: October 22, 2023, 04:07:27 PM »
I know that there are only a few of us running the LS7 style head....but here is a recent dyno sheet confirming how much more power an MSD intake makes over the factory GM LS7 intake setup.  To get one to fit under the factory hood of an RX-7 takes quite a bit of trial/error but it works in my FD.  That isn't my dyno graph.

My old LS7 11.25:1 engine with medium sized cam, JTR long tubes, dual 3" into single 3.5 with high flow cats and minor exhaust porting on the LS7 heads (very old port program) with stock LS7 intake/TB made 522rwhp/472 rwtq on a 335 tire out back with T56.  It went 110mph 1/8 and 138mph 1/4 which was fast.... but I felt it was down on power at least dyno results.  From Tony Mamo's chart it looks like it would've gained an easy 30rwhp and torque going to the MSD setup which would've made it go 140mph in the 1/4.

https://www.corvetteforum.com/forums/c6-corvette-zr1-and-z06/4771228-does-msd-intake-lose-low-end-torque.html

4
Parts WTB / WTB: FD auto 3:90 rear differential
« on: September 09, 2021, 11:44:00 AM »
Looking for a complete in good condition 3:90 auto rear diff shipped to:  San Ramon, CA 94583

5
Parts WTB / WTB: FD rear diff mount brace for stock differential
« on: August 09, 2021, 10:51:50 AM »
I need the Samberg, Sikky, etc rear diff mount that gets rid of the torque arm for a factory style differential.
https://www.sikky.com/product/mazda-fd-rx7-differential-brace/

I'm in San Ramon, CA 94583

6
NorCal Motorsport / Tremec Price increase Q4 2020 coming!
« on: October 12, 2020, 01:26:25 PM »
A little birdie told me also that pricing WILL increase on all Tremec transmissions before the end of Q4.  So you better get your order in BEFORE the end of November.

Contact me and get your order in before the price increase which happens every couple of years.  At one point the older T56 Magnum was $2800.... then went up $100 more.... now it is $3000... and soon it will cost more as will the T56 Magnum F style, T5, TKO600 etc

If you are on the fence about ordering a T56 Magnum F style... this may be the little push you need. 

My contact info: 
Mark Corbett
owner
norcalmotorsport@gmail.com

I've been doing RX-7 engine swaps since 1998 and LS swaps since 2004.  I can get pretty much ANYTHING LSx or swap related as I have accounts all over.

7
https://www.corvetteforum.com/forums/c6-parts-for-sale-wanted/4218835-441ci-erl-shortblock-with-allpro-ls7-heads-intake.html

I tried to sell this for a long time not assembled.... and it appears nobody is interested in a motor that doesn't prove power.  So hopefully I can show what it does on an engine dyno to improve the sale.  At the machine shop now to have the combo put together with wet sump, big nasty carburetor, the KUP distributor front mount setup, GZ Motorsports vacuum pump, road race oriented 252/260 .714" LLSR Cammotion cam, and some dyno headers that he uses.  I don't want to disclose the shop until it is assembled and dyno numbers are present.

Kip at Cammotion spec'd the cam and thinks it should make very close to 800 flywheel HP.  It's 13:1 compression and the heads flow approx 428cfm with a port matched intake and 4500 style flange.  I'm crossing my fingers it gets very close.  Getting assembled some time in July 2020 and there are some minor parts we need to order before final assembly and measure pushrod length as well.

8
Drivetrain / LS7 Atomic intake/105mm TB..... what Lokar DBC to use?
« on: May 09, 2020, 02:47:31 PM »
I have been using my factory FD cable forever in these LS swaps; however now on the 416 I built with custom LS7 small bore heads running the MSD Atomic intake the factory cable is binding and has a bad angle to the throttlebody cam/arm where it connects.  It is keeping the throttle open and it won't idle below about 1600rpm.  The cable is super under tension and not good.

Which Lokar cable to order which will hopefully remedy this?  part number?

Thanks.... tried to search on here... but the search engine is awful.

9
These are not mine....but for $300 someone should go get the stuff:
https://www.corvetteforum.com/forums/c5-parts-for-sale-wanted/4353358-dirt-cheap-ls-engine-parts-garage-clean-out.html

Pick up only in Lancaster County, PA

10
Parts for Sale / LS7 block used $1300
« on: December 27, 2019, 01:45:48 PM »
This isn't mine... I don't know anything about it;however if you want to build a 427ci+ size motor this is a great start.
https://www.corvetteforum.com/forums/c6-parts-for-sale-wanted/4353435-ls7-oem-block-used.html

There is an LS7 crank for sale needing to be turned for $200 on there plus 6 Ti rods for I believe $80 each with pistons!

11
Fall 2019 clutch sale:
Get a free clutch slave when you purchase a McLeod clutch assembly (clutch and flywheel).  Free shipping on them also!

McLeod RST twin disc 800hp rating and GREAT streetability with very low pedal pressure and non grabby engagement.  Great street/road race clutch.... lighter pedal pressure than a factory clutch!  This clutch doesn't like repeated hard clutch drops/launches.... if this is your intention step often step up to the RXT.  A handful of times per year... it will do... just not a drag race oriented setup.
$752

McLeod RXT twin disc is able to hold up to 1000HP, the extreme version of the RST clutch!  Laughs at clutch drops and aggressive drag race hard launches on slicks/prepped surfaces.  Fully streetable and only slightly more aggressive pedal pressure/engagement than the RST. 
$936

We have held 1000rwhp with the RXT running a 6.2 liter LS turbo setup in an FD... with a buddies 7.0 liter and same turbo... it was slipping due to the higher torque value.... If you are making BIG power... then you need the RXT 1200HD which is what I run in the 1200rwhp turbo LS9 RX-7.  It is also totally streetable and not much more pedal pressure than the standard RXT.

McLeod 28lb steel billet flywheel LS1 style
$289

McLeod 12lbs aluminum billet flywheel LS1 style (works on LS1/2/3/6/7 crankshafts)
$429

ARP flywheel bolts $30
GM pilot bearing $18
McLeod T56 slave quick release braided steel -4AN clutch line $85

Please email me at norcalmotorsport@gmail.com

I also have the new T56 Magnum F style TUET16362 transmission which is a drop in for the '93-02 style T56.  On mod needed to replace is a 31 spline yoke in place of your existing '93-02 style T56.  Email me for details!

Cheers!

NorCal Motorsport
Mark Corbett- owner

12
This could be mated up to a front engine LS motor by shortening a C5/C6 alum torque tube and driveshaft. If you have fabrication skills this would be an amazing combo to put the weight of the transmission out back.... it would most likely require some serious floor surgery out back as well and quite a bit of custom work.... 

This was removed from a customer car as he is going full drag setup with only 10K miles.  No issues with it.
https://www.corvetteforum.com/forums/c7-parts-for-sale-wanted/4241926-z06-tr6070-m7-diff-cradle-axles-a-arms-torquetube-dshaft-harness-lsd-actuator.html

I also have the rear 14.2" brakes for it.... and the front suspension/14.5" brakes.  I have too many projects and simply don't have the time/$ to put this setup into something....

14
Parts for Sale / T56 Magnum Fbody (bolt in replacement for T56)
« on: August 10, 2019, 12:08:27 PM »
I want to put this up here to continue the list of people that need this new style T56 Magnum which is a bolt in replacement for the current '98-02 style T56.  The only change needed will be a swap over to the 31 spline front yoke on the driveshaft.  No shifter mods or shortening of the driveshaft like the current T56 Magnum offering.  You can run the 4 bolt style T56 Shifter on the Fbody style... the current Magnum version has a 6 bolt style shifter which IMO is nowhere near as nice... plus once you modify it (more setback) the feel is not as good as it could be.

If you want one... reply here and I'll add you to the list... if you are tentative and don't have the $ please indicate so.  This is going to happen in Fall so you better get on the list if you have been waiting for the good news.... as early bird gets the worm. I don't have exact pricing OR shipping dates just yet.... but it is approaching  :cheers:

Current list for this transmission and info about the Magnum:
https://www.norotors.com/index.php?topic=11504.105

15
Parts WTB / WTB: 1993 FD front body harness
« on: July 10, 2019, 09:49:27 AM »
I need the front body harness that goes along the driver side (USA Left Hand Drive) front fender well. 

Please email me: norcalmotorsport@gmail.com

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