My twin supercharged tbi 350 miata build
let me catch everyone up on this.
over the past 2 years, i had been swapping a chevy 350 into a mazda miata [funds held me back, but eventually i got it done]..... caught fire in the process but it didn't stop me. i blew the engine up at the racetrack, rebuilt it, and now were are back in action with a different chassis.
SO, after slight research and talking with Dave W; i am going to be building a twin eaton m90 [thunderbird supercoupe superchargers] tbi chevy 350. The plans are to port them and if calculated correctly; should run about 18PSI. i will be running a single 2in-1out intercooler, a methonal/water injection system when the car hits boost, and e85 to TRY to prevent detonation on a 10:1 engine. chevy 350's are a dime a dozen at my pic-a-part....... so, if it blows, just gonna keep trying until we get it straightened out.
ill be running a 454 throttle body with 454 injectors, i am also running a twin belt setup..... v-belt for crank, waterpump, and power steering; then a 5-rib belt found on early vans for the alternator, waterpump, crank, and both superchargers...... i have 2 timing belt idlers from my miata that i am using for the non-ribbed side as idlers to get the belt to go where i want, then im using a tensioner somehow to obviously put tension on the belt. the superchargers have 8 rib pulleys, but the 5 rib belt fits right over them no probelm.
the engine itself is a GMPP crate 350/285-300hp...... i slapped vortec heads on during the rebuild and the shortblock is the exact same as the GMPP crate 350/330hp, so theoretically it should be the GMPP crate 350/330hp now. It's an 880 block with 4 bolt main and 1 piece RMS. The car already blows off the tires through 4th gear, but still, power is power :D time to grab some slicks lol.
The trans is a bone stock WC t5 from a v6-fbody. it's held up so far, no issues...... stock 10.5in clutch.
rear end is a stock miata 4.10 [7inch ring gear]...... it will be upgraded to a 2.8 thunderbird IRS rear with factory five racing axles, however, im going to have to relocate my lower shock mount for the axles to fit.
custom driveshaft.
custom TBI wiring.... re-worked my harness on here awhile back
PCM - 16196395 - pretty sure dave and i talked about this computer being capable of boost...... can someone please clarify?
there is a LONG road ahead, but it will all be worth it. I am shooting for 450whp.
this is my car after 2 years
http://i1122.photobucket.com/albums/...psd9aaf397.jpg
http://i1122.photobucket.com/albums/...pse12ec8e6.jpg
http://i1122.photobucket.com/albums/...pscd9c2ffc.jpg
http://i1122.photobucket.com/albums/...ps4e57dd2e.png
http://i1122.photobucket.com/albums/...ps127391a4.png
but i needed to get something safer, so i am building a different chassis with a roll cage; just in case.
in the meantime. enjoy
https://www.youtube.com/watch?v=4ZvIvqdXKoI
https://www.youtube.com/watch?v=XDSE2km69F8
http://i1122.photobucket.com/albums/...ps59ef29e8.jpg
http://i1122.photobucket.com/albums/...pse7e34075.jpg
I started building and eventually finished the trans tunnel...... don't hate on the flux core welder haha. It does the job, just ALOT of cleanup.
http://i1122.photobucket.com/albums/...ps4b1b1ce9.gif
http://i1122.photobucket.com/albums/...ps11cbab6d.jpg
http://i1122.photobucket.com/albums/...ps00e474f1.jpg
http://i1122.photobucket.com/albums/...ps00dd2691.jpg
http://i1122.photobucket.com/albums/...pskshj39iz.jpg
http://i1122.photobucket.com/albums/...pstarrxysz.jpg
http://i1122.photobucket.com/albums/...psavluhmjn.jpg
I also tac welded plates in the driver compartment on the firewall to patch the wholes that I won't be using.
http://i1122.photobucket.com/albums/...psnshi6qdl.jpg
http://i1122.photobucket.com/albums/...ps52f367d0.jpg
far from perfect, but far from bad too. think im done with the underside..... i know there's imperfections but its good enough for now.... i can always give it some love later on.
http://i1122.photobucket.com/albums/...ps2686bd38.jpg