If I want more low RPM torque? I would need the BSI/PSI intake (sorry its a hearing confusion on my end due to bad speaker on phone). That particular intake would give better torque between 1400-3400 rpm? Could the 8.1 reliably produce 600-700 ft#'s of torque as low as 1400 rpm?
Looking to build an engine that would produce almost double the torque to HP ratio. Like 400hp/800tq. Or would I have better luck with the Gen5/Gen6 talldeck block with a p nut or oval port head? Would one of those intakes work on a older talldeck?
@@bladenrexroth2555 The solution there is to stick with the stock manifold, a small (torque optimized) cam, and about 14lbs of boost. The 8.8L manifold will require you to change the heads and will still require a small cam and boost to get ya there. If you dont want to build a custom turbo system and you want something that bolts on, the whipple kit will put about 8-12lbs of boost (depending on pulley) into your engine ua-cam.com/video/zTDnr0wj3UU/v-deo.html
@@MicahCoy have parts numbers on those heads and the 8.8 intake? I have no problem building a single turbo system to aid in low rpm high torque production. Think I would need to upgrade the rotating assembly with forged parts. Is there a gear driven timing set thats compatible? I wouldn't trust a chain drive with that kind of power.
I have an 01 2500hd with the 8.1, bone stock engine at 139k on the clock. Does this manifold internal "pcv" that the stock manifold has or do I get to figure something out? Id prefer plug n play but fabricating something isnt off the table. And im seriously debating tossing on the wipple blower just for the hell of it.
6:50 - Yes it does. GEN7R is a plug and play replacement (with the exception of the larger throttle body). Also, I can personally attest that the whipple blower is the mechanical devil on your shoulder. The blower whine makes you want to stand on it everywhere.
We built one, and decided there wasn't a reason to continue with it. Our initial design had short runners as well. The problem there was that it killed all of the low end torque and only made power up top. This is great for race cars at 7000+ RPM, but doesn't work for street vehicles running 2000-6500RPM which make up 99% of the iron block 496 market. We also thought about making one of the GEN7R manifolds as a plastic piece, but in reality, the air moving through an intake manifold is moving so quickly that minor amount of heat imparted doesn't change things to a meaningful degree. (Motortrend's Engine Masters showed something similar in one of their episodes.) We decided to stick with aluminum as its tough and light weight.
That's going to depend more on your engine mounts, placement, crossmember modifications, etc. I would say to stick with a stock height intake like the GEN7R, and then test fit things a whole bunch as your hot rod application will be a complete one-off.
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Thank you for making this video. Keep up the good work. Will be purchasing stuff soon. For 03 suburban 8.1...
Would be nice to see a carburetor style intake manifold for the PSI 8.8L.
Cool thanks for the video, my parts arrived safe and sound Friday and Saturday. The book you recommended is out of stock but I’ll figure it out.
I will be grabbing one soon
Great video. Doing research on 496 merc mags in boats. Want HO level power but not ready for a full motor build
Good Video! Currently have HO525 kit minus the Raylar heads. 80mm CoolGap with ported stock 78mm tb. Any gains upgrading to the new 90mm intake/tb?
The smaller throttle body will keep up with the stock heads.
If I want more low RPM torque? I would need the BSI/PSI intake (sorry its a hearing confusion on my end due to bad speaker on phone). That particular intake would give better torque between 1400-3400 rpm? Could the 8.1 reliably produce 600-700 ft#'s of torque as low as 1400 rpm?
Looking to build an engine that would produce almost double the torque to HP ratio. Like 400hp/800tq. Or would I have better luck with the Gen5/Gen6 talldeck block with a p nut or oval port head? Would one of those intakes work on a older talldeck?
@@bladenrexroth2555 The solution there is to stick with the stock manifold, a small (torque optimized) cam, and about 14lbs of boost. The 8.8L manifold will require you to change the heads and will still require a small cam and boost to get ya there.
If you dont want to build a custom turbo system and you want something that bolts on, the whipple kit will put about 8-12lbs of boost (depending on pulley) into your engine ua-cam.com/video/zTDnr0wj3UU/v-deo.html
@@MicahCoy have parts numbers on those heads and the 8.8 intake? I have no problem building a single turbo system to aid in low rpm high torque production. Think I would need to upgrade the rotating assembly with forged parts. Is there a gear driven timing set thats compatible? I wouldn't trust a chain drive with that kind of power.
@@bladenrexroth2555 I don't, thats outside what we do. You can reach out to PSI's sales department.
I have an 01 2500hd with the 8.1, bone stock engine at 139k on the clock. Does this manifold internal "pcv" that the stock manifold has or do I get to figure something out? Id prefer plug n play but fabricating something isnt off the table. And im seriously debating tossing on the wipple blower just for the hell of it.
6:50 - Yes it does. GEN7R is a plug and play replacement (with the exception of the larger throttle body). Also, I can personally attest that the whipple blower is the mechanical devil on your shoulder. The blower whine makes you want to stand on it everywhere.
@@MicahCoy Ill order up the manifold sometime and go from there
Is there any news on a composite intake?
We built one, and decided there wasn't a reason to continue with it. Our initial design had short runners as well. The problem there was that it killed all of the low end torque and only made power up top. This is great for race cars at 7000+ RPM, but doesn't work for street vehicles running 2000-6500RPM which make up 99% of the iron block 496 market. We also thought about making one of the GEN7R manifolds as a plastic piece, but in reality, the air moving through an intake manifold is moving so quickly that minor amount of heat imparted doesn't change things to a meaningful degree. (Motortrend's Engine Masters showed something similar in one of their episodes.) We decided to stick with aluminum as its tough and light weight.
Any intake that would fit under a stock tri five chevy bel air hood
That's going to depend more on your engine mounts, placement, crossmember modifications, etc. I would say to stick with a stock height intake like the GEN7R, and then test fit things a whole bunch as your hot rod application will be a complete one-off.
This is a rad video and part's. Im not sure if i want that intake or save for the whipple 😅 i just dropped a 8.1 in my 84 c10. Its on my UA-cam page.
Thinking about doing a 8.1 swap in my 69 buick