GBodyShop

Have a job on a ZZ4 engine. The owner wants a FI on his ZZ4 and looking for the best FI set up that will work the best for this engine. Any help will be good. ZZ4 is a 355 Hp and 405 lbs of Tq.


I suggest a Speed Density TPI with a custom chip from Street & Performace.

The car will be used as strret and strip.

Thanks for anyones help.

Jose Luis
1987 Monte Aero
1987 ELKY
1986 442

91Z28

I use a Holley Stealth Ram on mine and it runs hard. If you put a TPI on there it'd choke out quite a bit of hp.

orange88

iTrader: (1)

id run a tpis mini-ram

91Z28

Stealth Ram is a much better fit on a stock ZZ4 than a Miniram since the Miniram only outperforms the HSR above 7k RPMs on a 350. There was a guy on the LS1GTO forums with the same combo as me with a more restrictive exhaust who made 292rwhp and 367rwtq. Not going to see that kind of torque with a miniram on a ZZ4.

orange88

iTrader: (1)

on my old combo i had a zz4 and mini ram thru a 700r4 and made 315hp and 355 tq.
unless the car weighs over 4000lb you shouldent need anymore tq

DeltaT

iTrader: (5)

Holley Stealth Ram with the Pro Software and the wideband O2 option. Or if he wants a single plane style, the Holley MPFI with the same options. Summit has the best prices.

Jim