swap 302 to 408

[larrykuykendall]

I have a 1988 Mustang coupe that has the mass air conversion on it it is a 302 that I'm changing to a 408 what do I need to do to the computer do I need to change it add anything to it or do nothing just an even swap?

[bonnie&clyde]

Im pretty sure u will need to tune it

[Mach1]

Make sure you injectors will support the 408 power, then tune it.

[VaderTT]

Upgrade the ram.

[Mach1]

Upgrade the ram.

i'd overclock the cpu first, remote the R17 resistor should give you another 15mhz.

[VaderTT]

^ This nigga know computas!

[ktm300hater]

Change the canuter valve

[shumpertdavid]

Is it just me or has there been an influx of newbie posts in the last couple days, mostly noticed in this forum

[Mach1]

Is it just me or has there been an influx of newbie posts in the last couple days, mostly noticed in this forum

yep, I have noticed the same

[shumpertdavid]

So are they new members or old members new accounts / aliases?

[crapstang]

So are they new members or old members new accounts / aliases?

That'd be sad if someone made an alias for that, but you never know...

When I google a job I've never done before, I see tons of threads with OPs with minimal posts. It seems that they find out about a forum, make 1-5 posts in regards to the build/job, and bail. lol.

[White90GT]

The reality is, as long as you have a proper matching MAF meter and fuel injectors and you set the timing close at the distributor, the motor will fire and run with no problem. Now if you want to get the most out of the 408 and if the 408 is going to want to rev passed the stock 6250 rpm rev limiter, you will need to get a tuner of some sort or take it to a shop and have it done.

I ran a 347ci setup to mid 11s on motor before ever touching the stock EEC IV computer. When we did tune on the computer, we didn't gain a whole lot because it was a lower revving motor that didn't mind the factory 6200 rpm rev limit. It eventually went as fast as 11.15@119 on motor at 3100 lbs without revving any higher than 6200.