|05-09-2019 11:53 AM|
|05-09-2019 10:05 AM|
Because this isn't a high performance motor or something I'm going to tinker with, all the extra adjustments provided by aftermarket EFIs doesn't make sense for me especially at the added extra cost.
As noted, for under $500 total and ~$150 out of pocked now, I should have a reasonably running fuel injected cady. The $1000+ I would have to pull out of my pocket now would be better spent on a front axle or rear axle
|05-08-2019 06:18 PM|
Holley Sniper and don't look back.
Can be had for less than 1K.
|05-08-2019 06:08 PM|
Summit sells a tbi efi kit for under $1000, but it's probably too small for a big block with some work done to it.
Put a Dodgem 8 liter V10 in it.
|05-08-2019 05:23 PM|
There were 4 402 variants. 2 were 1970 model year only. 2 were common as dirt.
402 was a marketing ploy to be used in trucks, and they thought 396 sounded more sporty, so they marketed it as such in some cars.
So a 402 from a truck is really a 402... and a 396 from a car could also be a 402.
You're right, not as common as a 454.
"During its lifetime, this 6.6-liter V8 was used in such vehicles as the Camaro, Chevelle, Nova, and Monte Carlo. Although it displaced 6-cubic-inches more than the 396 and had a bore that was 0.03 inches wider than the 396, Chevrolet marketed the 402 as a 396 on its smaller cars like the Nova, while labeling it as a 402 in its full-size automobiles."
I had a 69 Chevelle SS - it had a 402 in it from the factory, with 396 badges.
|05-08-2019 05:12 PM|
|Grendel||Whelp, looks like I am doing the 496 then.|
|04-28-2019 04:11 PM|
I've got everything off a 454 TBI engine including quadrajet adapter and wiring harness... I want to say $50.
One part of the swap is putting the 2" TBI onto the engine:
From there, I need to get a distributor... this would be the Cadillac 368 version. I've got a line on one for about $40. It will need to get repined and the wiring lengthened.
From there, I need to get a chip programmed. Last quick look said anywhere from $150 to $200. The challenge is knowing what the internals are.
|04-28-2019 03:58 PM|
are you using a stock TBI GM setup?
was there one available for those?
I'm caddy engine ignorant.
but what about the sniper or some other aftermarket TBI? I'd think they would have all the trigger wheels and such sorted out.
|04-28-2019 03:08 PM|
Lots of good information provided and very much appreciated.
Option 1B fell into my lap for a steal:
For a little more than the cost of a new Edelbrock intake for the big block caddy, I got a running swap ready engine. The claim is it was a 1969 500. Not sure I buy the 1969 since that would have been a 472 but I can't discount it having a crank swapped in.
It has high compression heads, the Edelbrock intake, an Edelbrock quadrajet, an HEI distributor, some beat up Sanderson headers, the 368 rear sump oil pan, and the rockers were replaced with a non-adjustable shaft rocker assembly The camshaft is the current unknown as is whether it is a 472 or 500.
I will be trying to figure out what crank is in there once I get it on an engine stand.
Does anyone have a good way to figure out what cam is in it?
I need to figure out the crank and cam so I can do a TBI swap. I'm just short the 368 distributor.
|04-17-2019 01:00 PM|
For me, that is largely off the plate since a shop I deal with has had VERY bad luck with them.
I've seen some available in the $1500 range but I'm not sure if they are 'swap' pullouts or long blocks.
The last 4l80e I bought was ~$300 for a core and about $2k for a moderately HD rebuild for the turbo 5.3L. That was ~18 months ago.
|04-17-2019 12:25 PM|
|04-17-2019 12:15 PM|
|65Chevy4x4||How much do those 8.1L with transmissions go for? Can't find much info or many of them on CL or the like for sale?|
|04-17-2019 11:25 AM|
I'm currently on the fence for how wide to do the axles. My initial thought is 60" wide like one of my FJ55s. It handles VERY nice onroad especially with the swaybar attached I could do full width but in order to run leaf springs with the stock frame, I would have to outboard them by 3.5".
You do bring up an excellent point on widening the frame. In that area of the frame, it is 25" wide inside. The rear of the frame is 35" inside. I do have to remove the body from this project and the front crossmember is detached and will need to be replaced. For this project, that does make perfect sense.
Replacing the frame in any substantial method is pretty much out of the question. According to California, the frame is the vehicle(VIN) Any substantial replacement of the frame constitutes new/specialty vehicle. I found that out about 6 months ago for a different project I was looking at.
|04-17-2019 11:06 AM|
If your putting this thing on tons, I'm assuming full width for better stability, any thoughts as to widening the front frame rails? You could probably gain 4" of width pretty easy by doing so. You might be able to just strategically cut the frame rails to pull them open a bit more, then weld them back up. Might be easier to just fab a whole new frame from the firewall forward. Of course now were off topic.....
|04-17-2019 09:37 AM|
In all honesty, if I was going to start with a non-EFI engine, I would go with a big block Cadillac; light weight and has 'the perfect' oilpan for this swap.
The 8.1L is kind of high on my list at this point. Although the 7.4L Vortec is intriguing because of the sideways facing throttle body.
|04-17-2019 09:22 AM|
LJ, You asked about a 400 CID engine back a page ago or so..
There is the 400 SBC prone to overheating hence the steam holes between cylinders and there is also a 402 BBC.
The 402 BBC was a rare bird in years produced, the 454 was more widely used.
BBC MKIV engines.
|04-17-2019 09:22 AM|
I won't know until I get the intake, but it looks like 3" lower, with a comparable throttle body on it.
There are other pics around of that intake with carbs, fitting in square body Chevies.
|04-17-2019 08:41 AM|
The intake combo shown is actually 1" taller than height of a stock truck intake.
I know that a 'regular' 454 will fit in an FJ55... I saw one about 20 years ago
|04-17-2019 08:32 AM|
That intake looks tall as hell too. I bet you have enough room to keep A/C low, fit a stock intake, and still make exhaust work. Unless you're making alot of power the stock manifold is fine don't get caught up in internet power numbers etc.
The 8.1L is not that much bigger than LSx, couple inches wider at the heads and couple inches taller over which most is oil pan.
|04-17-2019 08:21 AM|
|04-17-2019 08:04 AM|
Here is a turbo'd 5.3L squeezed into an FJ55:
The driverside exhaust manifold has to get cut pretty badly to pull it in to clear the frame rail.
|04-16-2019 09:43 PM|
|04-16-2019 08:12 PM|
I pull a LOT of stuff and most of its pretty heavy my tow vehicle of choice since 02 has been a 3/4 ton GM with a Duramax they are common as nails, parts if you eve need them are cheap and they pull everything I have ever asked it to. If I were looking at Gasoline it would without a doubt be a Big Block GM! The main reasons are that its a 100% tested with millions of miles on them for the last 50 years its seems. They are relatively inexpensive compared to Ford or Mopar. Parts a dirt cheap compared to Ford or Mopar. Parts availability and vastness of selection is never ending for the GM side. If a performance parts company is going to be building New and Improved parts for any engines its always going to be a SBC or a BBC FIRST, the rest come somewhere down the line!
|04-16-2019 08:51 AM|
|jedrattle||I haven’t read the whole thread, yet. How about a turbo 8.1? A friend has one in a ‘02 dually. 705hp 830tq at the tire! That was with 16psi but he normally runs 5psi|
|04-16-2019 08:07 AM|
Lots of guys find that they have to run older BBC exhaust manifolds to clear the frame on older trucks.
The 8.1l exhaust manifolds are “wider”.
The other issue is the A/C on most 8.1l motors is buried on the lower passenger side and interferes with narrower installs.
The fix has been to run the brackets/water pump from a Medium duty or a van 8.1l. There are a few guys talking about making aftermarket bracket sets, but I've not seen anything but prototypes thus far.
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