Exhaust Manifold Bolts

Kliz_old · June 10, 2010 at 6:35 PM

I'd like to varify the correct exhaust manifold bolt/washer combination for my 1966 March build 289 HiPo

According to Bob Mannel's book, Mustang & Ford Small Block V8, ch. 6, pg. 25, the correct exhaust manifold bolt/washer combination for a late (after Dec. 1965) 289 HiPo is shown in upper right hand corner photo. It consists of the special bolt with a captured Ramp Lock conical washer and a flat washer, i.e., a three-piece set with NO locking tabs. I assume this is correct, eventhough Scott Drake sells a kit (p/n EMB-C6ZE-528) w/o the flat washers.

The MCA Judging rules are a bit vague: "66-tab (early) or ramp-lock bolts and washers", which I assume means 3 pieces as specified by Mannel. Thanks Bob! Your book has been a great help!

Bill

BTW, AMK has the flat washers - p/n B-13004 (phophate oil)

66KGT_old · June 23, 2010 at 9:16 PM

Your car would have the ramp-lock bolts and washers. The AMK set is about as close as you can get.

jwc66k · June 23, 2010 at 10:27 PM

Per the Ford Car Parts book, Section 94, pages 11 and 20, 289 V8 engines from 12/17/65, standard exhaust manifold bolts are 4 each 377187-S(2) 1 1/4 inch and 4 each 377188-S(2) 2.0 inch. The 289HP engine uses the same short ones (4 ea) plus 4 each 377277-S(2) 2 5/16 inch bolts along with 8 each 353992-S(2) washers for both standard and Hp engines. All bolts are ramplock type (with a lock washer) and 3/8-16 thread. I believe these are full threaded bolts with later ones (service) possibly being partially threaded.

Jim

iowa_old · January 10, 2011 at 1:37 PM

could s.o. post a picture of these ramp-loc

nuts and bolts

iowa

jwc66k · January 10, 2011 at 3:06 PM

Go to AMK http://www.amkproducts.com/Catalog_PDF/109-127.pdf page 110.

Jim

iowa_old · January 11, 2011 at 4:44 PM

the manual says to torque these bolts to 22

in two steps starting with the center ones

doesn't seem very tight

but must be enough

iowa

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