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Priced from:

$206.48 - $224.85
Product #: 15597G Brand: Holley
Customer Rating: 4 of 5 stars

Lightweight cast aluminum manifold features an open plenum to boost engine breathing and dramatically improve low-end torque and performance. Note: Not legal for sale or use in California on 1966 and later registered motor vehicles. This product is intended for off-road or racing use only and is not intended or applicable for highway use.

Overall Rating
4 out of 5
4 out of 5
Open Ratings Snapshot
Rating breakdown 2 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2 of 2(100%)reviewers would recommend this product to a friend.
Product ReviewsWrite a review
Overall Rating
4 out of 5
4 out of 5
Power steering pump did not fit
July 17, 2008
Location: Bryan TX
How often do you shop at JC Whitney.com? Multiple Times a Year
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"The manifold is a good quality casting, and it bolted straight up to the head with no problems. However, although the bolt holes for the power steering pump lined up, the manifold is wider than stock and pushed the pump bracket over about a quarter inch. It ran well until I revved up the engine-then the crooked pulley threw the belt off.
I solved this problem by taking a 1.5 inch x 3/16 thick steel bar stock and drilling three holes in it. This serves as a bracket between the intake and the pump, although I had to add washers under the bolts on the pump to keep it straight.
Everything appears to be working fine now."
Pros: Was able to put a 4bbl carb on my Jeep
Cons: Had to fabricate a bracket for the power steering pump
11out of 12found this review helpful.
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Overall Rating
4 out of 5
4 out of 5
offy -chevy inline 6
April 17, 2008
Location: Saint Marys, Georgia
How often do you shop at JC Whitney.com? Multiple Times a Year
"Intake needs to be matched with Hedman Hedders part
number 69310. The gas mileage does not change with
the retrofit intake, but the performance is remarkable. It bolted together with the hedders with
little modification, and uses the stock 6 cylinder
Chevy pick up Accelerator cable, so you don't have
to use the supplied linkage and bell crank. Awesome
kit when used with a 600CFM Holley Square Bore Carburetor. The engine started right up and idled smoother than ever. I'm building a 1973 Chevy Nova now with the same parts, I put on my 1979 Chevy Pick-up. One is an inline 290 CID and the other is a 250 CID engine.
Pros: Better breathing for your engine. Better carburetor selections. Really shows the torque of an inline 6.
14out of 14found this review helpful.
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