4.8 ls fb rx7
Thread Starter
Teching In
Joined: Aug 2019
Posts: 10
Likes: 3
4.8 ls fb rx7 Its a shame aint it? You get one project done( 1974 datsun 260z 1jzgte restoration) then you move right into another without a hitch. Lol. So let me explain myself; for my 40th birthday i went to Virginia international raceway (VIR) and i got bit by the bug of road course racing, so on the way back home to north carolina i couldn't stop thinking about building something for the track.
I have a 4.8 that i was going to swap into my 85 c10 but recently found a 6.0 for very cheap ($500) that will be a better fit for my truck; so the 4.8 will be the power plant i will use for the race car. The car will be a 1985 fb rx7 (2400lbs) a car that my dad has just sitting around going bad. The rx7 is a gls-se which is the one that most want because it came factory with power steering, 5 speed, 390 limited slip rear, disk brakes all 4 corners.
So that's is the back drop, now i need your guys help with my 4.8 hop up. I would like for the 4.8 to stay N/A so nothing thats crazy..im thinking 300whp in a less than 2400lbs car would be pretty quick on a road course; plus should be fairly reliable at that power level. Right now i have a complete 2003 4.8 and a Corvette z06 ls6 intake. I know i need a cam, long tube headers maybe a dry sump system and i plan to use the factory rx7 oil cooler. The engine would need to rev out to at least 7k rpm. Which cam do i need? Springs? This will be a manual so i wont have to deal with stalls and all that jazz. Lol. do i need to mill the heads to gain some hp? Trying to stay under 5k for the whole build. Of course as i get into it there will be extended cost..its racing! This will be my winter project. Thanks
I have a 4.8 that i was going to swap into my 85 c10 but recently found a 6.0 for very cheap ($500) that will be a better fit for my truck; so the 4.8 will be the power plant i will use for the race car. The car will be a 1985 fb rx7 (2400lbs) a car that my dad has just sitting around going bad. The rx7 is a gls-se which is the one that most want because it came factory with power steering, 5 speed, 390 limited slip rear, disk brakes all 4 corners.
So that's is the back drop, now i need your guys help with my 4.8 hop up. I would like for the 4.8 to stay N/A so nothing thats crazy..im thinking 300whp in a less than 2400lbs car would be pretty quick on a road course; plus should be fairly reliable at that power level. Right now i have a complete 2003 4.8 and a Corvette z06 ls6 intake. I know i need a cam, long tube headers maybe a dry sump system and i plan to use the factory rx7 oil cooler. The engine would need to rev out to at least 7k rpm. Which cam do i need? Springs? This will be a manual so i wont have to deal with stalls and all that jazz. Lol. do i need to mill the heads to gain some hp? Trying to stay under 5k for the whole build. Of course as i get into it there will be extended cost..its racing! This will be my winter project. Thanks
Welcome to LS1Tech! Re-post the question over in our Gen3 Internal section of the forum. You’ll get plenty of help over there.
There are several rx7 swaps on this forum. You’ll love it here.
There are several rx7 swaps on this forum. You’ll love it here.
Thread Starter
Teching In
Joined: Aug 2019
Posts: 10
Likes: 3
