old school 68 327 into 90's camaro

[sike770]

i have a 92 Camaro RS with a 305

just got a deal on a rebuilt 68 327 was built for the 68 Camaro ie no computer or electronics what so ever.



was wondering if possible to use it in my 92 Camaro as a swap out.I know everything should bolt together the engine and tranny and motor mounts.But not sure what to do about the electronics part of it.Still wanting to use electronic ignition and fuel delivery.




Any advice would be apprecited

[1989GTA]

You will have to change the out to a link bar style lifters. The factory dog-bone style will not work on the early block. Also you will have to have a timing chain cover with the gadget to keep the camshaft in place. I don't think there is a provision for the knock sensor. Just some opening thoughts. Later 350 short blocks can be had at a modest price.

[MonzaRacer]

Why mess with trying to swap in a roller can if its is already running and rebuilt?
Block off fuel pump rod holes, yo can either widen two center intake bolt holes OR install some studs and bend them to appropriate angle to fit tpi. Most of those cars had small diameter flywheel so you would need one for older style engine.
For the most part yo should have zaro issues swapping it. The cam duration MIGHT affect the running of the tpi. You can fool the ecm somewhat with resistors in map sensor line.
Or getting custom chip burnt.
A mild cam or computer compatible cam might help you have issues.
Also you might need an adjustable fuel pressure regulator.
Knock sensor screws into block drain plugs.
You will also possibly need some fbody headers, namely cause IF the factory manifolds have that extra bolt hole, headers can be drilled for old style bolt hole if they don't have one.
If you really do want factory roller can, really wimpy at that , just use hydraulic roller lifters for regular SBC, if its factory roller all you need is can button, and factory roller tc set and the can lock plate fromfactory block with bolt hole ears cut off.
If you want to run older engine and not use tpi but a return type fpr and carb and plain old hei even.

[sike770]

Why mess with trying to swap in a roller can if its is already running and rebuilt?
Block off fuel pump rod holes, yo can either widen two center intake bolt holes OR install some studs and bend them to appropriate angle to fit tpi. Most of those cars had small diameter flywheel so you would need one for older style engine.
For the most part yo should have zaro issues swapping it. The cam duration MIGHT affect the running of the tpi. You can fool the ecm somewhat with resistors in map sensor line.
Or getting custom chip burnt.
A mild cam or computer compatible cam might help you have issues.
Also you might need an adjustable fuel pressure regulator.
Knock sensor screws into block drain plugs.
You will also possibly need some fbody headers, namely cause IF the factory manifolds have that extra bolt hole, headers can be drilled for old style bolt hole if they don't have one.
If you really do want factory roller can, really wimpy at that , just use hydraulic roller lifters for regular SBC, if its factory roller all you need is can button, and factory roller tc set and the can lock plate fromfactory block with bolt hole ears cut off.
If you want to run older engine and not use tpi but a return type fpr and carb and plain old hei even.




Thanks Monza for your input,yeah i wasnt thinking about what that stock cam was gonna do with my electronics .i have seen they make special cams for fuel injection maybe i need to look into that.I was hoping maybe my intake from the newer motor wich is tbi would go onto the older motor.



I have done some research on the older motor the 327 has the double hump heads from what i learned they have small intake ports and valves hoping this wont cause issues with the fuel injection

[Johnny Blaze]

Tpi or tbi?

Do you know the cam specs in the 327?

Do the 327 heads have bolt holes for brackets.

I'm not sure if the serpentine setup will work. If it does use the 305 water pump, reverse rotation.

Most everything else will fit. Intake mods as mentioned and stuff.

[Johnny Blaze]

Ok, read again, it's an RS, therefore, TBI.

My suggestion,

get a hyd cam, something like;

220/225 duration @.050"
.480"ish lift

edelbrock tbi intake, port if possible
55lb injectors
headers of your choice
fresh ignition

datalog and burn chip to match
check heads, use serpintine setup, motor mounts, etc from 305.

[sike770]

Tpi or tbi?

Do you know the cam specs in the 327?

Do the 327 heads have bolt holes for brackets.

I'm not sure if the serpentine setup will work. If it does use the 305 water pump, reverse rotation.

Most everything else will fit. Intake mods as mentioned and stuff.






My camaro is tbi .not sure on cam specs on 327 and the double hump heads are smooth except for the trade mark humps,so no place to mount accessory was thinking of maybe using old school bracket setup for power steering and alternator,I also learned im not gonna be able to mount my tbi intake to the 327 because of the angle of the bolts that mount intake to the heads,but i found an adapter plate i can mount my tbi to the old intake

[MonzaRacer]

As for cams stock gm 4 bbl cams ARE what most the standard cs274 350 4 bbl can.
As for computer compatible, meh I can take them or leave them. As for TBI Holley used to make higher flow TBI and you can adapt them to 4 bbl intakes. Gm used to on first TBI big blocks.
As for small valves, no double humps did not have small valves. The ports are less volume so they are more suited to smaller cube engines. Up to about 6000-6500 on 350s with 1.94 intakes. 2.02 /1.60 do flow better but they do limit huge power on 355.
Biggest issue is bolt holes for accessories. I have been using band steel bolted to lower front mount holes to mount alternator.
Unless cam is real wild it should be fine. IF cam is too choppy you CAN install a resistor in map sensor harness too fool computer. Or get new chip programmed.
You could also look into a Megasquirt or even Microsquirt. They both work with HEI computer control.
Biggest thing is learning curve on tuning.
And simple USB connector and lap top or netbook.

[Johnny Blaze]

Are you prepared to lose your AC?

Personally, I would not want to get rid of the Serpentine setup, and you will run into issues with a 4 barrel intake and tbi adapter.

Join Thirdgen.org if you have not already.


I run a TBI in my daily driver, its a pretty healthy engine. Runs real good.

I have had a few 3rd gens as well.

The stock tbi will support most street engines. You can get a 454 TB, but it requires machine work to the intake and some wiring mods.

[Johnny Blaze]

As state above you can modify the TBI intake to fit the centerbolts holes on your older heads.

[MonzaRacer]

As for losing the serp belt setup you DONT have too.
Me and a friend made a plate that bolted to the front of the older engine, tack welded nuts then clearanced as needed.
We made a template off the front of later model engine, then bolted it down on front of engine, and added couple of small braces from intake stud/nuts.
It worked great and never gave us an issue, we even added a lip on crank spacer to center up his crank pulleys.
We used 1/4" but he redid it in 3/16" on another engine.
I have actually seen several people actually drill double hump heads.
It is not hard to make most anything work if you think hard enough and use some imagination.

[Twentyover]

Will 2pc rear main need a different flywheel/flex plate?

[andrewb70]

Will 2pc rear main need a different flywheel/flex plate?

Yes.

Andrew