3.9 engine tuning.

3.9 engine tuning.

Author
Discussion

A.J.M

Original Poster:

7,921 posts

187 months

Sunday 14th February 2016
quotequote all
Need some advice for tuning a 3.9 to get more power and torque.

Myself and 2 mates have bought a trial car with a 3.9 v8. It's stock and ripe for some mods to get a bit more out of it.

What's the best cam to get good power out of it, want this to sing as i'm going to give this car death.. hehe
Plus headwork, what's good and what's not?

( it's not my wallet that is paying for the tuning so i want to go silly with it... )

A.J.M

Original Poster:

7,921 posts

187 months

Tuesday 16th February 2016
quotequote all
It's a genuine Tomcat he's got. Built in the 90s, been standing for a while but it's solid and needs freshening up.

The engine wasn't in the car, it had a 4.6 fitted at some point.
The 3.9 is gubbed, won't turn over by hand, plugs aren't in right, his bore cam has been down into the engine and what he can see is a lot of very rusty Pistons.

Typical.


However, I have managed to get a lead to a 3.5 block with heads.
No pumps, carbs etc. Do the pumps etc from the 3.9 fit the 3.5 if they are good?

Used to working on 2/300tdi and tdv6 engines but never done v8 stuff so it's a stab in the dark.

A.J.M

Original Poster:

7,921 posts

187 months

Tuesday 16th February 2016
quotequote all
Will the engine be complete?
With pumps etc attached?

What you thinking price wise?

A.J.M

Original Poster:

7,921 posts

187 months

Tuesday 16th February 2016
quotequote all
Yeah....

5 hours 30 mins roughly...

It's close.. hehe