Engine question
Thread Starter
Instructor
Joined: May 2018
Posts: 100
Likes: 4
Engine question
Hi, i wonder if this engine will fit my 68? https://www.summitracing.com/dom/parts/hpe-hp291p originally it had a 427, but later it got swapped for a 350. Can anyone help me please? Will it fit with the hood and everything?
Drifting
Joined: Aug 2004
Posts: 1,883
Likes: 124
From: Lubbock TX
Shouldn't be any problem. All GM smallblocks (I'm not including LS engines here) are the same dimensionally. Exhaust should hook up, transmission, pretty much everything. The only thing that may change is the need for a cowl induction type hood if you use a very tall intake manifold. If you choose a later version of the 350, you may also have to swap flexplate/flywheel since they're a bit different.
Thread Starter
Instructor
Joined: May 2018
Posts: 100
Likes: 4
Shouldn't be any problem. All GM smallblocks (I'm not including LS engines here) are the same dimensionally. Exhaust should hook up, transmission, pretty much everything. The only thing that may change is the need for a cowl induction type hood if you use a very tall intake manifold. If you choose a later version of the 350, you may also have to swap flexplate/flywheel since they're a bit different.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
That engine has a one piece seal so you will need a new flywheel/flexplate......and the dipstick comes out on the passenger side.....
Other than that.....it is a drop in and your manifold should fit as it has perimeter valve cover bolts and not center bolt......
Make sure to buy a balancer with marks on it.......and use a 1204 Fel Pro intake gasket.....what is your old intake?
Jebby
Other than that.....it is a drop in and your manifold should fit as it has perimeter valve cover bolts and not center bolt......
Make sure to buy a balancer with marks on it.......and use a 1204 Fel Pro intake gasket.....what is your old intake?
Jebby
Thread Starter
Instructor
Joined: May 2018
Posts: 100
Likes: 4
That engine has a one piece seal so you will need a new flywheel/flexplate......and the dipstick comes out on the passenger side.....
Other than that.....it is a drop in and your manifold should fit as it has perimeter valve cover bolts and not center bolt......
Make sure to buy a balancer with marks on it.......and use a 1204 Fel Pro intake gasket.....what is your old intake?
Jebby
Other than that.....it is a drop in and your manifold should fit as it has perimeter valve cover bolts and not center bolt......
Make sure to buy a balancer with marks on it.......and use a 1204 Fel Pro intake gasket.....what is your old intake?
Jebby
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Wow thats an old piece!! They revised that one a few times, if you dont use it I may be interested just to hang some old stuff on the wall again.
Think that one came with a divider you could slip in.out if you liked, Could be wrong
Weiand makes a real nice low rise dual plane that would pick things up nicely
Think that one came with a divider you could slip in.out if you liked, Could be wrong
Weiand makes a real nice low rise dual plane that would pick things up nicely
Last edited by cv67; Mar 13, 2019 at 10:55 AM.
Thread Starter
Instructor
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On the summit link. Below the engine pic it says overview, theres a link below it that says charts and graphs. That selection gives all the specs for the engine which says it has Dart heads which SHOULD be the old style intake bolt pattern, so yes your intake would fit if that is true
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
Yes your Street Dominator will fit....no problem......
The Dart heads are an option....the engine in your link says OE heads. It has perimeter bolt valve cover so old style intake bolt holes.
I would pop for the Dart option......70hp upgrade and will support future mods.....OE heads will get about 360hp then they are done....with porting maybe 390....but why?
https://www.summitracing.com/parts/hpe-hp89/overview/
Jebby
The Dart heads are an option....the engine in your link says OE heads. It has perimeter bolt valve cover so old style intake bolt holes.
I would pop for the Dart option......70hp upgrade and will support future mods.....OE heads will get about 360hp then they are done....with porting maybe 390....but why?
https://www.summitracing.com/parts/hpe-hp89/overview/
Jebby
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
OP
As the others said, yes the atk crate will fit car & your Holley intake will fit it BUT you'll need a different flexplate or flywheel.
You have your parameters & budget, I have mine. I would not buy someone's used Rebuilt Remanufactured mail order crate motor; I'd buy a New crate. If an enthusiast is a bit clever & resourceful, he/she can do it & get just as much value & power but for the same money. I've posted that new GM Vortec crate option several times on this forum.
However, IF I were to buy a rebuilt/reman ... I'd choose this $2599 Blueprint BP3503CT1 over that $2374 atk ... BP priced $225 more.
https://www.summitracing.com/parts/m...make/chevrolet
Just like atk, BP also already overbored + 0.040" , also fits car, requires another flexplate/flywheel. BUT also requires a different "vortec" intake maniold which can be had for Under $165.
That BP has three important advantages over the atk : (1) BP has roller cam & lifters and its (2) heads are much better performing. The BP is (3) already broken-in/run-in on a dyno.
less than $400 difference between the two; seems the blueprint piece has more advantages than that; plus nearly 50 more hp.
Oh, and your old Holley intake should net you $75; maybe more.
As the others said, yes the atk crate will fit car & your Holley intake will fit it BUT you'll need a different flexplate or flywheel.
You have your parameters & budget, I have mine. I would not buy someone's used Rebuilt Remanufactured mail order crate motor; I'd buy a New crate. If an enthusiast is a bit clever & resourceful, he/she can do it & get just as much value & power but for the same money. I've posted that new GM Vortec crate option several times on this forum.
However, IF I were to buy a rebuilt/reman ... I'd choose this $2599 Blueprint BP3503CT1 over that $2374 atk ... BP priced $225 more.
https://www.summitracing.com/parts/m...make/chevrolet
Just like atk, BP also already overbored + 0.040" , also fits car, requires another flexplate/flywheel. BUT also requires a different "vortec" intake maniold which can be had for Under $165.
That BP has three important advantages over the atk : (1) BP has roller cam & lifters and its (2) heads are much better performing. The BP is (3) already broken-in/run-in on a dyno.
less than $400 difference between the two; seems the blueprint piece has more advantages than that; plus nearly 50 more hp.
Oh, and your old Holley intake should net you $75; maybe more.
Thread Starter
Instructor
Joined: May 2018
Posts: 100
Likes: 4
OP
As the others said, yes the atk crate will fit car & your Holley intake will fit it BUT you'll need a different flexplate or flywheel.
You have your parameters & budget, I have mine. I would not buy someone's used Rebuilt Remanufactured mail order crate motor; I'd buy a New crate. If an enthusiast is a bit clever & resourceful, he/she can do it & get just as much value & power but for the same money. I've posted that new GM Vortec crate option several times on this forum.
However, IF I were to buy a rebuilt/reman ... I'd choose this $2599 Blueprint BP3503CT1 over that $2374 atk ... BP priced $225 more.
https://www.summitracing.com/parts/m...make/chevrolet
Just like atk, BP also already overbored + 0.040" , also fits car, requires another flexplate/flywheel. BUT also requires a different "vortec" intake maniold which can be had for Under $165.
That BP has three important advantages over the atk : (1) BP has roller cam & lifters and its (2) heads are much better performing. The BP is (3) already broken-in/run-in on a dyno.
less than $400 difference between the two; seems the blueprint piece has more advantages than that; plus nearly 50 more hp.
Oh, and your old Holley intake should net you $75; maybe more.
As the others said, yes the atk crate will fit car & your Holley intake will fit it BUT you'll need a different flexplate or flywheel.
You have your parameters & budget, I have mine. I would not buy someone's used Rebuilt Remanufactured mail order crate motor; I'd buy a New crate. If an enthusiast is a bit clever & resourceful, he/she can do it & get just as much value & power but for the same money. I've posted that new GM Vortec crate option several times on this forum.
However, IF I were to buy a rebuilt/reman ... I'd choose this $2599 Blueprint BP3503CT1 over that $2374 atk ... BP priced $225 more.
https://www.summitracing.com/parts/m...make/chevrolet
Just like atk, BP also already overbored + 0.040" , also fits car, requires another flexplate/flywheel. BUT also requires a different "vortec" intake maniold which can be had for Under $165.
That BP has three important advantages over the atk : (1) BP has roller cam & lifters and its (2) heads are much better performing. The BP is (3) already broken-in/run-in on a dyno.
less than $400 difference between the two; seems the blueprint piece has more advantages than that; plus nearly 50 more hp.
Oh, and your old Holley intake should net you $75; maybe more.
