454HO Intake manifold
Thread Starter
Instructor
Joined: Apr 2009
Posts: 126
Likes: 54
From: LA CA
454HO Intake manifold
Happy New Year Forum Members
I just installed a 454 HO with a Hurst 5 speed in my 74. Engine and trans went in without a hiccup. I restored almost the entire car with the help this forum. I am now at the final stages and i wanted to verify my intake manifold options.
The stock Chev Perfrm Prts intake Prt # 19131359 that came on the HO has a carb height of approx 5.2" In all my research i could not find any other manifold for rectangular ports that was less. I looked at the Weiand Action Plus and Edelbrock Performer & 7562 and any I could find for rectangular ports - All came in at or near 5.2"
The LS6, Prt # 3963569, I understand is a low profile intake however i have read users have to add a spacer to get the performance. If so do that bring you back up to a carb height of 5"
I am going with the L88 hood and created my 4" gage across the engine bay. Thinking of going with the Holley 770 Street Avenger. Things look to be close.
Any thoughts or suggestions would be huge
Thanks
I just installed a 454 HO with a Hurst 5 speed in my 74. Engine and trans went in without a hiccup. I restored almost the entire car with the help this forum. I am now at the final stages and i wanted to verify my intake manifold options.
The stock Chev Perfrm Prts intake Prt # 19131359 that came on the HO has a carb height of approx 5.2" In all my research i could not find any other manifold for rectangular ports that was less. I looked at the Weiand Action Plus and Edelbrock Performer & 7562 and any I could find for rectangular ports - All came in at or near 5.2"
The LS6, Prt # 3963569, I understand is a low profile intake however i have read users have to add a spacer to get the performance. If so do that bring you back up to a carb height of 5"
I am going with the L88 hood and created my 4" gage across the engine bay. Thinking of going with the Holley 770 Street Avenger. Things look to be close.
Any thoughts or suggestions would be huge
Thanks
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If you have an L-88 hood..that intake should work fine. Basically it's an Edelbrock Performer.
The old Holley Strip Dominator single plane works well also. The trick is if the carb pad is machined at an angle or not.
JIM
The old Holley Strip Dominator single plane works well also. The trick is if the carb pad is machined at an angle or not.
JIM
Thread Starter
Instructor
Joined: Apr 2009
Posts: 126
Likes: 54
From: LA CA
Does that sound right and with this set-up I should be able to use a decent air filter and close the hood
Thanks
Bob
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Well....we'll get all sorts of pushback...do a earch on carbs...but I'm a double pumper lover especially for anything with a stick trans...and double especially for anything with a big block. Certainly th vacuum will work...but it will take some tuning to get it to really perform.
You're in LA...not sure how big of a deal a choke is to you...but something like a 750HP Holley at the minimum on up to a 950 HP (actually flows closer to 830) which would be my first choice. I'd get the "street HP" version which will work best for your engine.
JIM
You're in LA...not sure how big of a deal a choke is to you...but something like a 750HP Holley at the minimum on up to a 950 HP (actually flows closer to 830) which would be my first choice. I'd get the "street HP" version which will work best for your engine.
JIM
