hood clearance question
Thread Starter
Instructor
Joined: Nov 2009
Posts: 190
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hood clearance question
Thanks in advance for your help 
I am building a 383 and am trying to choose a manifold. I will be using the Q-Jet and am ok with a "low profile" type air cleaner.
How do you confirm you have a L88 hood. The person I bought the car from said it was, but I need to make sure before I make a descision on the manifold.
Also, I am open to any suggestions for the build.
1975 original 350, 373 gears, 400 tranny, double hump heads, stock Q-jet carb, Eagle stroker kit, true duals without cats, not sure about which headers yet.
My goal is a nice reliable driver on pump gas with app 400 hp
I know matching components is the secret, my biggest questions are the hood clearance (manifold) cam, manifold and headers
I am building a 383 and am trying to choose a manifold. I will be using the Q-Jet and am ok with a "low profile" type air cleaner.
How do you confirm you have a L88 hood. The person I bought the car from said it was, but I need to make sure before I make a descision on the manifold.
Also, I am open to any suggestions for the build.
1975 original 350, 373 gears, 400 tranny, double hump heads, stock Q-jet carb, Eagle stroker kit, true duals without cats, not sure about which headers yet.
My goal is a nice reliable driver on pump gas with app 400 hp
I know matching components is the secret, my biggest questions are the hood clearance (manifold) cam, manifold and headers
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
You could post a pic. of your Vette & we can tell if it has a L-88 hood or you can look at other pics.
Med. rise 73-79 hood is only 7/8" lower than L-88 hood & all of these allow cowl induction.
To run the Q-J, you need an air filter that fits w/ hi rise intakes or the low rise Performer like 2101 will even work w/ stock air cleaner.
The 73-79 med. rise hood allows the hi rise intakes like Victor Jr, RPMs & others on SB w/ aftermarket dropbase filter & Holley.
Med. rise 73-79 hood is only 7/8" lower than L-88 hood & all of these allow cowl induction.
To run the Q-J, you need an air filter that fits w/ hi rise intakes or the low rise Performer like 2101 will even work w/ stock air cleaner.
The 73-79 med. rise hood allows the hi rise intakes like Victor Jr, RPMs & others on SB w/ aftermarket dropbase filter & Holley.
Thread Starter
Instructor
Joined: Nov 2009
Posts: 190
Likes: 0
I tried to post a pick but they are too big (12 mega pix) and I cannot figure out how to post it.
my hood it looks like the yellow one below.
change of plans though, I will be going with typhoon manifold (pc-2020 from skip white performance) and holley 750DP "if" it will fit.
again, I am ok with modifying the air cleaner if necessary
thanks again
my hood it looks like the yellow one below.
change of plans though, I will be going with typhoon manifold (pc-2020 from skip white performance) and holley 750DP "if" it will fit.
again, I am ok with modifying the air cleaner if necessary
thanks again
Last edited by rbat; Dec 20, 2009 at 03:51 PM.
Race Director
Joined: Jun 2000
Posts: 10,040
Likes: 672
From: FL
For a 383 and a Q-Jet, use the Performer RPM Q-Jet, part #7104. The stock air cleaner will not fit but a Moroso Low Profile Racing Air Cleaner with a 3" tall filter will result in about 3/4" clearance with a stock hood. An L-88 hood will have more clearance.
Here are pics of my engine with that manifold and aircleaner, all under a stock '75 hood. Only thing I had to do was dimple the aircleaner base for the accelerator pump arm.
Here is an older photo of the engine with the lower Edelbrock Performer 2101 that allows use of the stock aircleaner.
Photo showing stock hood:
Here are pics of my engine with that manifold and aircleaner, all under a stock '75 hood. Only thing I had to do was dimple the aircleaner base for the accelerator pump arm.
Here is an older photo of the engine with the lower Edelbrock Performer 2101 that allows use of the stock aircleaner.
Photo showing stock hood:
Thread Starter
Instructor
Joined: Nov 2009
Posts: 190
Likes: 0
For a 383 and a Q-Jet, use the Performer RPM Q-Jet, part #7104. The stock air cleaner will not fit but a Moroso Low Profile Racing Air Cleaner with a 3" tall filter will result in about 3/4" clearance with a stock hood. An L-88 hood will have more clearance.
Here are pics of my engine with that manifold and aircleaner, all under a stock '75 hood. Only thing I had to do was dimple the aircleaner base for the accelerator pump arm.
Here is an older photo of the engine with the lower Edelbrock Performer 2101 that allows use of the stock aircleaner.
Photo showing stock hood:
Here are pics of my engine with that manifold and aircleaner, all under a stock '75 hood. Only thing I had to do was dimple the aircleaner base for the accelerator pump arm.
Here is an older photo of the engine with the lower Edelbrock Performer 2101 that allows use of the stock aircleaner.
Photo showing stock hood:
Can you give me some input on how your 383 performs (build specs and HP and how the car handles the HP)
I don't want a 1/4 mile car, but a dependable, nice driver with as much power that is reasonable for an otherwise stock car.
thanks again
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Race Director
Joined: Jun 2000
Posts: 10,040
Likes: 672
From: FL
No 383 here. Just a roller cammed 350 with Edelbrock heads. Car is still a lot of fun to drive but I am itching to change things up a bit. Maybe LS3 or even BBC swap.
Thread Starter
Instructor
Joined: Nov 2009
Posts: 190
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right number
how much HP/Torque are you at and what do you think is your goal.
I am trying to figure out what the magic number is to have the right balance between performance and drivability/relability
I am trying to figure out what the magic number is to have the right balance between performance and drivability/relability
Race Director
Joined: Jun 2000
Posts: 10,040
Likes: 672
From: FL
I am probably right about 375 HP/400 ft lbs at the crank. Like to get it in the 550 range for both at the crank.
Thread Starter
Instructor
Joined: Nov 2009
Posts: 190
Likes: 0
I tried to post a pick but they are too big (12 mega pix) and I cannot figure out how to post it.
my hood it looks like the yellow one below.
change of plans though, I am considering going with typhoon manifold (pc-2020 from skip white performance) and holley 750DP "if" it will fit.
again, I am ok with modifying the air cleaner if necessary
thanks again
my hood it looks like the yellow one below.
change of plans though, I am considering going with typhoon manifold (pc-2020 from skip white performance) and holley 750DP "if" it will fit.
again, I am ok with modifying the air cleaner if necessary
thanks again
Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
