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I think its somewhere around 700lbs. You can see at SEMA this week.

Mercury Marine introduces an AUTOMOTIVE crate motor at SEMA descended for the famed LT-5 DOHC Corvette motor. MM was tasked w building the motor in the early 90's by GM. Now Mercury Marine introduces the next generation. Wow! http://www.mercuryracing.com/_media/pdf/Got-Wheels-Brochure.pdf

http://i187.photobucket.com/albums/x198/Z51Xfire/Byron2007.mp4 Thought you'd be interested in seeing this. My 84 running mid-13's on street tires and running w LT cars. :thumb Somebody was surprised.

Black Label is a tag you'll find on the ZF-6. There were 2 types, a black and a blue label. The black label is generally considered to be stronger w a straighter cut to the gears. The crossbeam is what connects the trans to the diff. The ZF-6 is a longer trans than the 4+3, so you'll need the...

The ZF swap is pretty straightforward. It bolts to the back of an SBC. Clutch linkage is works off stock master or you could consider using dual clutch system. We have a few ZRs w 600lbft using the ZF. I did the swap in my garage. Just need 90 crossbeam and correct yoke. Look for a Black Label.

Ever think of using a ZF-6. I swapped one in place of the 4+3 for the 84 I had.

Any dyno runs to post?

As someone posted, same wheel used in Malibu, CTS, HHR etc. those probably are not as complex since paddle shift not involved. Airbag certainly a question tho.

I was told there was a difference in number of splines. Inwouldn't mind using a C6 wheel in my C4 ZR.

There's also indication they have done the same for the LT-4 and LT-5. If they're going to use LT-5, GM better be using a DOHC 4 Cam for it! :thumb

I think I may still have injectors from my Xfire days. Also, I don't recall but the 84 has only one O2 sensor. It may not be on the passenger side so rich/lean won't show up. Bumping FP by 1psi will affect all areas of fueling including AE. SOTP really doesn't tell you anything and increasing FP...

Tell Bob that Dominic sent u.

DynamicEFI

Does NC have OBD1 emissions testing? BTW, LT-5 parts are not difficult to find. Visit zr1.net

I chose the TFS heads and they were fairly new at the time. Pretty comparable to AFR heads and a bargain for $600. What people forget is that the Xfire is a small block w a TBI induction. It responds to all the same mods any other SBC does. The 7747 is an upgrade from the stock ECM. It's also...

Ran a custom Comp Cams grind. Full roller setup w Comp roller lifters, Crane SS 1.6 full roller rockers and hardened pushrods. Heads were TFS 23d 190cc runners and 64cc chambers giving 10.25:1 compression. Cam spec was 218@ .050", 269@.006, .528" lift w 1.6, 108LSA, 53d overlap. Stock bottom...

I tuned both on my 84Xfire using a ported stock manifold and larger cam. The 7747 doesn't have the resolution, speed, flexibility or functionality EBL has. Not to mention flash capability. Not even close.

Don't waste your money IMO. Your "test and learn" project has been done many times. You could learn from others that have already done this. Will this work with the stock ECM? Maybe, but not very well and not optimally. As for ECMs, skip the 7747 and go to EBL at DynamicEFI. Also suggest you...

What have you done about re calibrating the tune?

Real men have 16 injectors, 4 cams, and 32 valves.