To get to 9.2Scr, the total chamber volume would need to be not less than 89.9cc. With no other changes, this would require an Scr increase to 9.2.Ī stock 360 has a swept volume of 737.21 cc. Lets say we target 155psi for the sake of towing.
With iron heads you can bump that to around 160psi, still on pump gas. In 4* advanced this will give you a nice small Ica of 54* and at say 7.8 True Scr, that should get you about 128psi at 500ft elevation. IIRC the stock 360 2bbl cam specs are 252/260/112. Or you can close the intake valve sooner with an earlier-closing intake valve event. If you want more bottom end, Your #1 go-to is to increase the cylinder pressure. Therefore you can run a 2800 stall no problem which is what I would do. 65 mph will be 2760 zero-slip, maybe 2900 at 5%. I highly recommend that you do a compression test and see where the engine is at. I'm with Rusty, the stock 252* 112LSA cam is just right. The problem is the lack of cylinder pressure, which translates directly to lazy cylinder-filling at lower rpms.Ī cam with a later closing intake valve will just be lazier, and make less pressure. Rebate form and details available at /performance/offers.The big ports and the 1.88 valves are not the problem. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. Allow 6 to 8 weeks for delivery of debit card. Rebates may be submitted over two invoices within 120 days of each other.
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