69 350 V8 swap in a 98 F-body

[ssinteceptor65]

Ok so id like to put my 1969 chevy 350cid into my 98 f-body. i know i wont have sensors or abs, but who needs that shit neway...

As far as i know both engines should bolt up to my 5 spd. And they are both 90 degree engines, so basically they are they same block, but the my 350 has 2 more cylinders (duh)

Any information would help, and correct me if any of my information is wrong.

Thanks in advanced

[Stg747]

im pretty sure ure v6 puts out almost as much power as that 350

[RedSleeper]

If it's a non-performance 350 or anything made between 1973 and 1991 with few exceptions, I'd say it's a waste, but if he picked up a 350 out of a '69 Corvette Stingray or a '69 camaro Z/28, he has a strong 350hp engine there, and I don't know any stock 3800s that came with 350hp. (Correct me if I'm wrong about the Z/28's displacement)

On the other hand, you're a little bit misinformed about the engines being the same. They both have 90 degree angled banks, but our 3800 block is it's own animal, with as much in common with a 350 as it has in common with a Ford 351 Windsor. A 4.3L Vortec is exactly what you said though, a 350 with two cylinders chopped off.

As far as mating that mighty 350 up to the T5 that comes with our cars, if you can do it, you'll wind up with no 3rd or 5th as soon as you open it up. If you're serious about the swap, look into a T56 or do a Muncie 4-speed that they came with back in the day.

[car audio dave]

i dunno why youd bother with an older engine. id just go with an LS1, just as much if not more aftermarket available,and if you need to smog thats possible with an LS1, but not with a CSB from 69. i know that in california you can only swap to a newer motor, not an older one.

[FinkenZ34]

ya i dont have 8k for a LS1.

and theres no way in hell my 3800 will keep up with my small block, and yes its out of a 69 camaro, the displacement should be around 300hp not 350, bt i have a cam in it.

thanks for the info guys, still debating wether or not to even do the swap

[lubsvitek]

ya i dont have 8k for a LS1.

and theres no way in hell my 3800 will keep up with my small block, and yes its out of a 69 camaro, the displacement should be around 300hp not 350, bt i have a cam in it.

thanks for the info guys, still debating wether or not to even do the swap

You can pick up an LS1 with a tranny, instrument panel, pcm and kmember for around 5k if you take your time and look around junkyards/ebay.

Sell your 69 camaro 350 to someone looking for a resto engine. Numbers matching engines will yield some good cash.

Its been discussed alot, but the benefits of downgrading from an FI option to a carburated 350 are far outweighed by the sacrifices and obstacles of doing so.


OR

sell your 98 fbody and get an LT1

or sell your 98 fbody, sell your 69 350, add the time and money you'd spend on swapping in that engine and get a 98 LS1 fbody.

[Grimm]

*sigh*

I know i've said this before...


How are you going to clear the distributor? Cut the cowl and fuck up your wipers?
Your t5 will not bolt right up. Not even close
How are you going to fuel it? Fuel pump and lines will need to be changed
What about motor mounts? You'll need to go custom.
How are you going to clear the hood? Get a new one?
How will you make your computer controlled guages work with a motor that has no sensor? Gonna fabricate a whole new gauge cluster?

By the time you spend all the time and money doing all this, you could've either gone Forced Induction and outrun that 300hp 350, or swapped an LS1 and outrun that 300hp 350.

[mofo123]

69 z28 came with a 302.

[chadder]

^correct. And the 302 is a hell of a motor.


However, Grimm is right. A ton of stuff would need to be changed. The 3800 has some serious potential to be fast. It can take huge amounts of hp with a good tune with some FI. It would be more cost effective and much more fun to make a fast v6 than an old ass carbed v8. Everyone is expecting the v8 to be fast, but to see people's faces when you pass 'em up with a v6 is the best feeling in the world.

[ssinteceptor65]

thats wat exactly wat ive been debating on... i think im just guna keep the 3800 and wait till march when the blower kit is comin out for it..

thanks for the info guys

[FinkenZ34]

HAHA, you posted under my name, lmfao

[tcrocker162000]

if you were just wanting to run carb they do sell a carb intake for the LS1 and it comes with a new module for the computer, so that could be something to think about if you wanted to do something that would bolt up nicely and not be EFI

[Tpunk]

It has also been proven that 300hp 350's from back then do not produce 300hp. The ratings systems back then were completely different also they were rated for leaded gas. Long story short the 3800II would indeed outrun a 4th gen with a 350 from that era or at worst run even. Look at the 1/4 mile times of stock 1st gens even and compare that to what most of us with just bolt ons run (about a 15).

[Dr. Channard]

I saw a 99 Camaro that someone put a crate carb 427 into...that was cool

[HeavyChevy3800]

Why's it have to be a 1969 350?

[Tpunk]

I think he already has it. A cooler project would be to try to get a Direct injected 3.6L 300hp 60* V6 out of the new CTS to work... might take a bit more to get that done though :P

[FinkenZ34]

Ya the main reason he was wondering is cuz he already has the 350 sittin in his 1965 Chevelle.

I told him just to save up the moeny and mod the fuck outta the 3800. Thats what we're doing now

Hes also got a 402 Big Block, the high performance interceptor one outta a police car) sittin in his dads garage that we also thought would be an insane project into a newer F Body camaro.

We jsut both thought it'd be neat to come rolling up to a bunch of guys with old school muscle in a 98 Camaro, pop the hood, and you got an old school big block udner the hood, defiantley unique

[Grimm]

We jsut both thought it'd be neat to come rolling up to a bunch of guys with old school muscle in a 98 Camaro, pop the hood, and you got an old school big block udner the hood, defiantley unique

A 350 is a small block. :thinking:

[HAZ-Matt]

Yeah... The first 350 was in the 67 Camaro and was rated 295 HP, SAE gross. To get an idea about that, the 71 426 Hemi had a gross rating of 425HP and the net was 350HP.

That isn't to say you can't build a powerful SBC with 350cui, but that I don't think it is worth the trouble to do that particular swap, when the car more easily accommodates an LT1, LT4 or LSx.

[FinkenZ34]

About the 350 bein a small blcok i know that, but if you REREAD i was talking about a 402 being a BIG BLOCK

[Tpunk]

Big blocks take even more work and again they aren't really worth it in a world where you can build a 427-454ci LSX style engines that will be easier to work with in the 4th gen.

[blubbachub]

chevy big block motor = god of all v8's ..... nuff said
a big block 402 in a fourth gen would be an amazing thing to see though

[01GPGT]

the hemi 426 = just god:P

but ya there is no room if it is going to be a track car only then ya but there is just no room in a 4th gen.

if you want to do this get a 3rd gen the car was desighnd for that motor and there are kits to shoehorn a BBC in to it.

[Tpunk]

Big blocks are overrated IMO. With the efficiency of modern small blocks and the crazy displacement they can attain now, the big block is just not needed in most instances.

[Bob]

Big blocks are overrated IMO. With the efficiency of modern small blocks and the crazy displacement they can attain now, the big block is just not needed in most instances.I agree. But there is just something about turning a big block over 6000rpms.

[Forced_Firebird]

Ok so id like to put my 1969 chevy 350cid into my 98 f-body. i know i wont have sensors or abs, but who needs that shit neway...

As far as i know both engines should bolt up to my 5 spd. And they are both 90 degree engines, so basically they are they same block, but the my 350 has 2 more cylinders (duh)

Any information would help, and correct me if any of my information is wrong.

Thanks in advanced

Your bbllhousing won't bolt up. The 3800's have the GM small Corperate Pattern (same as the 60* engines).

[Forced_Firebird]

A 350 is a small block. :thinking:


GM offered the 350 in both big and small block, just like the 455 ;)

[Tpunk]

Wait just a minute, when the hell did they make a 455 small block and why the hell have I never heard of it? I'm really interested, and what car did that come in? The only 454 small block I know of is the one that World engines sells... and it's about the most bad ass thing I've ever seen.

[01GPGT]

i think he is refering to pontiac there blocks where the same size for all engines

[Forced_Firebird]

i think he is refering to pontiac there blocks where the same size for all engines

Yep.

Motown (among others) still offer them.

[Tpunk]

They were still bigger than the SBC though right?

[Forced_Firebird]

They were still bigger than the SBC though right?

www.hotrod.com/techarticles/engine/113_0307_454_small_block_crate_engine/index.html


Not any more ;) , but back then Pontiac and Olds used different bell housing patterns, starter bolt patterns/positions etc when it was offered in production cars - not quite as interchangeable as the real SBC.