The 1947 - Present Chevrolet & GMC Truck Message Board Network - Swapping the 4.3L to a RamJet 350 predicament

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)

- - Swapping the 4.3L to a RamJet 350 predicament (https://67-72chevytrucks.com/vboard/showthread.php?t=531105)

x ReAcT x

06-25-2012 09:50 PM

Swapping the 4.3L to a RamJet 350 predicament

First of all i must say i love this website, when i began my frame off i knew nothing about these trucks, and now i know where every damn bolt goes. So i want to thank everyone for the help. So heres my latest situation. Ive got the frame rolling and now its time to put the drivetrain in. Im getting a killer deal on a RamJet 350 ($5500.00)so im curious if the bellhousing on my sm465 transmission will bolt up to the new v8 engine and also i dont know if the engine mounts will have to be moved forward, back, or hopefully stay in the same shape? Ive been searching the forum like crazy and i havent found any solid info yet. And i know this really has nothing to do with my post but N2TRUX ramjet setup is beautiful, im sure everyones already seen it but wow great looking truck.

86c20

06-25-2012 10:04 PM

Re: Swapping the 4.3L to a RamJet 350 predicament

as far as i no they are all the same expete the l6 the monts have to move for those i think. the bells should also be the same if not there are a ton of those trans out there and you can get one ez same as fly and clutch

x ReAcT x

06-25-2012 10:07 PM

Re: Swapping the 4.3L to a RamJet 350 predicament

You just solved all my problems thank you, ill go ahead and order the engine.

gchemist

06-26-2012 07:20 AM

Re: Swapping the 4.3L to a RamJet 350 predicament

A 4.3 has the same bolt pattern as a 350 SB. It's a direct swap. All accessories will fit too. Motor mounts will also swap. Basically, you're adding two cylinders.

C-10 simplex

06-26-2012 07:50 AM

Re: Swapping the 4.3L to a RamJet 350 predicament

Quote:

Originally Posted by gchemist (Post 5455091)

A 4.3 has the same bolt pattern as a 350 SB. It's a direct swap. All accessories will fit too. Motor mounts will also swap. Basically, you're adding two cylinders.

Please explain further concerning the engine mounts; Can the frame mounts and engine mounts be re-used and in the exact same positions?

rs72z

06-26-2012 09:03 AM

Re: Swapping the 4.3L to a RamJet 350 predicament

Yes. The 4.3 is just a v8 less the front 2 cylinders. The mounts are all the same including acc.

KQQL IT

06-26-2012 12:53 PM

Re: Swapping the 4.3L to a RamJet 350 predicament

You may need a flywheel. I think a ramjet come with a flexplate
Posted via Mobile Device

rs72z

06-26-2012 01:34 PM

Re: Swapping the 4.3L to a RamJet 350 predicament

Quote:

Originally Posted by KQQL IT (Post 5455490)

You may need a flywheel. I think a ramjet come with a flexplate
Posted via Mobile Device

Good point. I'm not sure how the 4.3 flywheel is weighted.

N2TRUX

06-26-2012 11:02 PM

Re: Swapping the 4.3L to a RamJet 350 predicament

Quote:

Originally Posted by x ReAcT x (Post 5454552)

........ And i know this really has nothing to do with my post but N2TRUX ramjet setup is beautiful, im sure everyones already seen it but wow great looking truck.

Thanks for the kind words. Roger at RPL did an awesome job on the install...:metal:

All times are GMT -4. The time now is 04:20 PM.