[Big M]

The 1979 was the last Trans Am/Firebird to have a Pontiac engine, if I'm not mistaken. THe 6.6, right? Well, I've liked this car for a while, now.
One of my projects that I'm looking into is building a 79TA for drag racing. Fat slicks and nitrous, that's the plan. But what kind of internals are necessary? Besides tougher pistons and linkage.
Thnx

 

[Crazyquik]

Re: Specifically, what's involved in prepping a '79 T/A for NOS? (Big M)

Get a good rebuild kit with moly rings, forged rods and nitrous pistons. They'll have a dropped ringland to keep em sealing longer. Dont skimp on the bearings, and run like 20 weight motor oil to cushion the bottom end better. Run a colder plug than normal, and learn to read plugs, start rich and tune from there. Keep the timing lower than normal.
Basic nitrous stuff that applies to any engine.
J.

 

[Big M]

Re: Specifically, what's involved in prepping a '79 T/A for NOS? (Crazyquik)

quote:[HR][/HR]
Basic nitrous stuff that applies to any engine.
J.[HR][/HR]​

Since it's an older carb engine, rather than a feul injected engine, how does that factor in?

 

[Crazyquik]

Re: Specifically, what's involved in prepping a '79 T/A for NOS? (Big M)

Well in my opinion, its harder to tune a carb engine because you dont have those helpful short band O2 sensors to tell you your air-fuel ratio.
But, setup the carb a little rich, and start with a small shot. Check the plugs, make sure they look good. Better to tune rich and run a little slower than tune lean and blow a hole in a piston or blow a head gasket.
How much spray you plannin on runnin?

 

[speedn16v]

Re: Specifically, what's involved in prepping a '79 T/A for NOS? (Big M)

Just be careful you don't blow the welds on the intake manifold

Dave.
'90 GLi
'97 Jetta GT

 

[-GTR-]

Re: Specifically, what's involved in prepping a '79 T/A for NOS? (Big M)

...we need more NNNAAAAAAAWWWWWWZZZZZZZ yo. my top speed is only 155.

 

[bc]

Re: Specifically, what's involved in prepping a '79 T/A for NOS? (-GTR-)

reinforce the floorpan also