When was the 4X head installed on the 400?

When was the 4X head installed on the 400?

The codes are listed below. The 4X head was installed on the 400 and 455 during the mid 1970’s. Most I have found are 455 stamping. 3H 2.11/1.66 valves 98/101cc’s. These cc figures are approximates, as I have found most slightly higher.

What makes the 400 cubic inch engine special?

What Makes the 400 Pontiac Special. Pontiac grabbed a 389 block used in the high-performance Catalina, as well as the Lemans and GTO, and punched it out to an even 400 cubic inches. They found that the engine provided massive amounts of low-end torque and rock steady high RPM power output.

Can a Pontiac 400 engine make 400 hp?

Q: I want to build a Pontiac 400 engine for my 1968 Firebird. What parts would I need to build a sweet-running engine that makes around 400 horsepower? (Money is no issue!) A: We think the Edelbrock Performer RPM package would be ideal for you.

How to build a Pontiac 400 engine for a 1968 Firebird?

We work with the Summit Racing tech department to help you tackle your auto-related conundrums. In this week’s Mailbag , we’re recommending a parts combo to get 400+ horsepower from a Pontiac 400 engine in a 1968 Firebird. Q: I want to build a Pontiac 400 engine for my 1968 Firebird.

What kind of engine does a 1978 Pontiac Trans Am have?

1978 Pontiac Trans Am SE L78 6.6L 400 Engine, WS6 Suspension Package, Only 77k original miles, flaw Only two owners Trans Am with records on file. It’s originally a California car then p Gateway Classic Cars of Fort Lauderdale is excited to present this high-demand, 2nd GEN 1978 Pontia

What kind of transmission does a 400 block have?

Unlike the 351C, almost all 400 blocks used the large bellhousing bolt pattern used by the 385 family big-block and were typically equipped with the higher torque-capacity C6 transmission. There were a small number of 400 block castings produced in 1973 with the dual bellhousing patterns.

What kind of wheels did a Trans Am have?

Posi-traction rear axles were always standard on Trans Am models. Power steering, disc brakes, rear spoilers, and on 1970-81 models either a shaker or Turbo-style hood was standard. 1970-78 models either had a 400 or 455 V8 as standard equipment. 1970-81 models all had 15″ wheels as standard equipment. (L78 and W72) units built in 1978.

What kind of engine does a 1978 Pontiac Firebird have?

Gateway classic cars of Nashville is proud to digitally present this 1978 Pontiac Firebird Trans Am 1978 Pontiac Trans Am LS3 Motor and 6 Speed Transmission Out of a 2015 Camaro, Runs Very Strong, Pa 1978 Pontiac Trans Am (Stock #431) HIGHLIGHTS Z CODE 400 ENGINE-TH350 TRANS-FACTORY 19 BLACK WS4 CA