lessthanchad

how technical would that be to drop a 350 into my 86 rx7? i mean like with all the vacuum lines and the computer and ****. what would i need to do? get a new computer and ****? and i'm also trying to figure out whether or not i shold leave it a manual transmission or go automatic. what would be easier. i need some advise..

CompuBob

.. instead of being an *** like everyone elce is about to be.. I'll be helpfull
first, search
then go here and read:
https://www.rx7club.com/other-engine-conversions-non-v-8-118/

and here is a few links
http://www.grannysspeedshop.com/
http://www.wrongmotor.com/

1987RX7guy

iTrader: (3)

Most people do LS/LT swaps. There is a forum for this sort of things linked by compubob. We here in the general FC tech section normally don't like these kinds of swaps because most of us like the RX cars because of one thing, the rotary. Most of us view it as rather backwards to buy a rotary powered car and put in a piston engine. But some people get fed up with rotarys and do them anyhow. Suit yourself

Good luck with the work, try to pick a car that is already blown if you can, don't take a still working car and throw it away, rotary wise anyhow. Also if you do it, do it RIGHT and don't ghetto it out much.

Icemark

off to other engine conversions

Crash Test Joey

iTrader: (1)

A forum you'll find most helpful is www.torquecentral.com as there is a V8 section with more info than you'll ever need.

The skill involved in putting a V8 into an FC is less than you might think. If you're going carbed, you don't need a computer at all. If you want FI, the best bet is to get a pullout from a junkyard or otherwise wrecked car - the computer and wiring harness from the motor is what you need. The rotary's computer isn't used at all.

I'm actually considering doing another small block Chevy into my newest FC (I just picked up two more shells last weekend). If I do instead of parting them out, I'll post info on the swap. I've got threads here and at torque central for both of my swaps. Good luck!

There's been everything from an LS2 all aluminum motor to an old Dodge big-block put in these cars. there's help available to do anything you want to do.

lessthanchad

i love the rotary engine as well. i think it makes more sense actually. the only reason why i wanted to doa V8 swap was because the rotary is blown. so instead i wanted to do something different and my buddy told me to drop a V8 in it and that people have done it before and it came out really nice. nothing against the rotary's though. mine is blown and i can pick up a small block 350 for $100. haha. just doing something different thats all

Crash Test Joey

iTrader: (1)

It can be done pretty cheap compared to building up a rotary. It takes a LOT to get an NA 86 into the low 12's. I had under $7k invested in my last FC conversion. It's still on Centerline's photo gallery too, even though I sold it to a buddy of mine so I could build my LS1-powered FD.

gnx7

iTrader: (10)

Here's some info for you and ****...

Don't expect it to cost $100.... plan on a minium of $1K if you can fabricate everything yourself and to do it safely. Remember that using a POS junkyard motor and stock parts I wouldn't expect miracles...... the engine conversion with lack luster parts and reverse engineering (ie adding 200lbs to the front end with an all iron V8) will be fun... but it will leave much to be desired.

An RX-7 with 150K mile stock suspension and an all iron 350 in it WILL handle worse. On the flip side it will also with traction haul *ss in comparison to an n/a 13B. A lighter 302 Ford (very light iron block) with aluminum heads will maintain the good handling as will an LT1 (iron block/alum heads) and an LS1 (all aluminum V8) will handle great.

Your cheapest bet would be to throw in a used 13B that runs well... if you want a seriously fast car then research the engine conversion further. These cars can be seriously fun... and you will learn a ton about cars..... plus a V8RX-7 can be a handful after laying rubber for 100 yards and then beating motorcycles....

gerbraldy

Why put a v8 in an rx7? Why not put a 13bre in a c4? I think that would **** off wayyyy more vette owners than an 8cyl swap into a 7 would **** off rx owners.

As for your swap, it is not that difficult at all. Grannys speed shop sells bolt in mounts for any engine/ tranny combo. What you do is get a nice complete stock long block (LT-1) and don't unplug any of the engine harness; that will make it alot easier when worrying about the harness.

Crash Test Joey

iTrader: (1)

Because a C4 is slow enough as it is.

digitalsolo

iTrader: (2)

I don't know, they seem pretty pissed off at me.

Nihilanthic

Lessee, a rotary in a C4 would... suck.

The engine of a C4 makes up for the chassis. The chassis of a RX-7 makes up for the engine.

And digitalsolo, you can put that in your sig if you like