DCI Motorsports / John House Pontiac 455 Ram Air 5 pump gas street Beast
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- Опубліковано 21 сер 2024
- This is a 1974 factory 2 bolt main 455 block with forged internals. It still sports the factory 4.21" stroke, with a .030" over 4.181 bore. Compression is just over 10-1 to keep it pump gas friendly. The camshaft is a custom ground LSM billet hydraulic roller profile with 250 degree's @ .050" intake, 259 @ .050" exhaust with a 109 lobe separation. We used a Howard's direct pin oiler solid roller lifter for endurance on the street. Because of the hydraulic lobe profile, lifter adjustment is minimal and is only required around every 8,000 to 10,000 miles. So for as little as these vehicles get driven maybe once in in its life time. You can see in the video that we have fuel injectors in the runners of the intake. That's because we are going to be using an Edelbrock Pro Flow 4 EFI system for this build when installed in the vehicle. We have not dynoed this combo yet, but other combos with our DCI RA5 heads similar to this one have made 700+ HP on pump gas. The DCI Motorsports RA5 heads on this engine are as cast with just a bowl blend and gasket match. They flow right at 400 CFM at max lift and have very efficient ports for their size and volume. Please subscribe and watch our other videos and hit the like button. Thank You for viewing :) Please share !!!
Twin Carburettors Don . Ones missing 😅 ❤ this set up .
Robert 🇦🇺 Australia 🇦🇺
We only used a carb to start it on the run stand. Its actually Port fuel injected in the car. :)
Nothing sounds like a Pontiac...
Really sweet idile Don . Gr8 little set up . Robert , Australia .
I just had to watch this video again.
😁
Don that engine is sweet!
Thank U SIr !!!
that's the sound I'm looking for with the cutouts! love it Don!
I cant wait to hear it through the full exhaust on your Goat :)
Sounds like a napa thermostat
Thanks for following !!! Please subscribe to my channel and don't forget to hit the notification bell for any new videos I post. Also you have a standing invite to my Bench Racing Podcast every Wednesday night from 7PM to 8PM Eastern. Hope to see you there :)
I would like to know if they make those cylinder head aftermarket. I would really like to buy them for a build
Yes I make and sell them. Check out my website dcimotorsports.com
That's going to be a blast to drive !!
It is 😃. I posted another video with it in the car. Its in a 70 GTO I did a ride along.
Nice build
Really cool stuff. Curious about the ported FI, compared to the carb. Think i'ld rather have a couple 660 center squirters. Or maybe a dominator. Thanks for posting. Good luck with the install.
Thank U SIr !!! With the size of the intake ports the EFI really helps with drive ability and helps keep the plugs clean. So far it has proven to be comparable in HP. :)
Look up Don Edler ran one in the 70s. Still has it
Thats cool !!! Aren't you Don Edler??? 🙂
@@dcimotorsports1111 I'm don jr
His 64 was the cover car in HPP September 2013
1964 GTO, I love it. Sounds like you're going to be getting a very nice family heirloom @@donaldedler8892
Definitely! I don't know why my favorite color has been dark blue for the last 55 years. Lol
The Best 💪🏻👍🏻👏🏻!!!
D A Y U M, son!!!!
Not familiar with the ram air V heads, but I noticed that they don't appear to have 2 exhaust valve's next to each other in the center of the head like other Pontiac motors does that require a different type of cam?
Yes different cam, headers, and intake manifold.
@@dcimotorsports1111and pistons
@@mback12000 Good point !!! If you are using the factory RA5 heads you can just swap holes. My heads have a different valve incline angle 10 degrees instead of the factory 14 degree's. How ever in most cases with my heads, no valve relief at all is required.
@@dcimotorsports1111 You have a nice product
@@mback12000 Thank U :) Not sure if you watch my Podcast every Wednesday already, but if not check it out. We do them every Wednesday from 7 to 8 PM Eastern.
Im gonna call you soon
Didnt realized you were so close. Were in northeast ohio. You need to here the real thing. RAV
Would love the visit. I'm in Randolph Township located in Atwater about 15 minutes directly east of Akron. 2477 State Route 44 Atwater OH 44201
We're in concord . I'll give you a call soon. I'll see my dad during holidays and make a time with him
Sounds good :) Merry Christmas to you and your family !!! @@donaldedler8892
You hafta run a new Pontiac motor open headers, or it sounds anticlimactic i.e. too mild
Do you still have yours ?
Sounds so good either way. It idles so nice!
Will the fuel injection change anything much?
Thank You Sir !!! Fuel injection makes them idle smoother and a little lower.
Seems like hydraulic lifters would be fine for the rpm range.
They would be but keep in mind these heads are a big piece of aluminum. Because they are so big the expansion rate is almost twice of what an iron head is. They grow depending on how hot you run the engine as much as .018".
Do you have headers for a 67 A-body car with a 4 speed? Planning on pretty much the same setup in the future.
Yeh computer can't learn in open loop. Coolant temp puts o2 sensor into closed loop
Hey like the motor I got a 71 455 it's a YC block came with a 400 Turbo I was going to build it not sure what I'm going to do with it you know anybody that's interested in it in Lancaster Ohio
I might be interested :) Give me call on my cell 330-628-3354 Thanks Don
Do you know who sells those valve covers? Thanks.
Yes I do. If you would like a set give me a call 330 850 5050 dcimotorsports.com
Is that 12:1
No its only 10 to 1 :)
They only made 50 your lucky to have one.
Do you have 6x heads
🎊 ρɾσɱσʂɱ