You are correct. This engine was re-rated a few months back, and looks like we never updated the graph!They list the 400 as 510 lb/ft but the graph doesn't show that
You are correct. This engine was re-rated a few months back, and looks like we never updated the graph!They list the 400 as 510 lb/ft but the graph doesn't show that
Keep in mind with a 3.08, it may still feel a little doggy... I know a th350 will be a high winder, but may consider a gear change if this is just a street bruiser.Both engines are similar in hp/tq, this is going in my 58 Chevy Pickup, this will be hot cruiser with a 350 trans and a 2400 stall converter.
It currently has a 77 Camaro front clip with the donor 350. I think it was a whopping 195hp engine when it started out, but no so much today. The rear gear is a 3:08.
Yep! @Heywodja email me and I can send a real dyno from each one.I'd probably take the one with the smaller cam and longer stroke since you're putting it in a pickup with that gear and converter.
I wonder if Johnny could send you the full dyno sheets for each so you can overlay them to compare graphs.
Now that you've got the engine decision ironed out, is that TH350 built with any internal upgrades? Questioning if it'll handle that torque. A TH400 would be better suited IMO.Both engines are similar in hp/tq, this is going in my 58 Chevy Pickup, this will be hot cruiser with a 350 trans and a 2400 stall converter.
It currently has a 77 Camaro front clip with the donor 350. I think it was a whopping 195hp engine when it started out, but no so much today. The rear gear is a 3:08.
Now that you've got the engine decision ironed out, is that TH350 built with any internal upgrades? Questioning if it'll handle that torque. A TH400 would be better suited IMO.
Confused that two similar size engines built similar come out with similar power?Anyway..
I am still confused, and I know there is some voodoo in the math which makes these two engines almost identical in HP/TQ.
If you're changing transmissions I'd recommend something with an overdrive. We're putting a similar engine in a Camaro this winter and my buddy is going with a 700R4. It's an easy swap and is going to allow him to use a little more gear for around town fun and still be able to take it out on the highway. Just my two cents...I am working on that, I Kinda want to stay with the 350 so it dosen’t have the kick down cable.
Rod length can be like bringing up polytics or religion. Ask 5 guys and you are liable to get 9 answers.First off this is not a Mopar, but I was hoping the engine GURUS could help me decide on which engine to purchase. Both are in the same HP range, although the 396 does have a couple more points of compression, which may not use pump gas. Both are built from the same new casting 350 block, and both are in the same price and HP range.
I am ordering a long block because I already hve an ignition and pla on using the performer RPM Airgap manifold.
The one I am leaning towards is this one, it is a 350 stroked to 396 with 6.0" rods and a 4.0in" bore. Forged crank, rods, and pistons.
GM SB Compatible 396 c.i. Engine - 491 HP - Long Block
Or
This one which is also a 350 stroked to 400ci" with a 4.125' bore and a 3.75" stroke also using a forged crank, forged rods, and forged pistons.
GM SB Compatible 400 c.i. Engine - 500 HP - Long Block
I am leaning towards the 396 because of the 6" rods, however I have no clue why because I am dumb as a box of rocks on the math of what works or does not work.
I may have read somewhere or picked up from conversations that a 6" rod is preferred.
They should just make one with 6.123 rods and a 4.040 bore and that would be easy, lol.
Thanks in advance!
With the 3.07 first gear helps get things rolling. Depends on expectations.If you're changing transmissions I'd recommend something with an overdrive. We're putting a similar engine in a Camaro this winter and my buddy is going with a 700R4. It's an easy swap and is going to allow him to use a little more gear for around town fun and still be able to take it out on the highway. Just my two cents...