Ok, here's my situation. I use my 87 LG4 5-spd IROC primarily for Auto-x. The car just isn't legal in F-stock...the LG4 doensn't have enough in it. I'm also getting tired of F-stock, so I'm moving up to E-Street-Prepared. Here's what I can do engine wise:

-Use any engine out of any thirdgen (except the TTA). The internals, heads, and cam must remain stock, but I can use ANY intake system and a full exhaust (headers back).

I'm obviously going L98, but I'm unsure if I should keep my LG4 CCC setup, or go full TPI. Here are my questions:

-The big one - if I'm going from full LG4, 87 camaro to full TPI, say, 89 Camaro, and I have what's more or less a "turnkey" engine (longblock with TPI, ECM, uncut harness, accessories, exhaust manifolds, MAF, intake, distributor), HOW MUCH OF A PITA IS IT? I know I have to drop the gas tank and run new lines, but is the wiring more or less plug and play into what I have in the car? Is this a six month project or a month project over a few weekends? What kind of debugging issues can I expect?

-What would you guys do? I would really rather NOT have an extremely complicated project on my hands, but, I recently failed emissions twice and daily drive the car at times for work - in which case I'll typically put on 300 miles or so a week - so the improved gas mileage is tempting. Furthermore, there's something to be said for fuel injection in a sport where response is so key.

TIA!

 

If you are asking which you should go with, there's no question in my mind that TPI is the way to go over CCC. It is a bit of work however. If I were you, I'd look for a complete junk'er car to use and the donating vehicle so you don't get nickle and dimed to death like I did on one of the swaps.

 

Why not start with the L-98 with your current intake system and see how it goes? You can always spend more money and convert it to TPI later if you don't like the results.

The CC-Qjet system can easily run an L-98 with little or no mods. I'd suggest some richer secondary rods (DRs at least, like the L-69 305 HO used OR some even richer DA rods). I'd also suggest a fair bit more initial advance at the distributor than the stock LG-4 0* setting (at least 6* BTDC being a safe starting point for maximum scoot). If you can put an aftermarket chip in the computer that would be even better, rules permitting. Stock LG-4 spark advance curves are VERY conservative.

QJets have very compact fuel bowls and actually do quite well in high-G type maneuvers. Certainly nothing like the dead-nuts accuracy of fuel injection but damned good for a production carb.