Posted by Bossmav (IP: 158.252.115.22) on May 21, 2000 at 05:39:39:
In Reply to: Re: ONE QUESTION??? posted by Jim Glover on May 21, 2000 at 00:03:05:
Jim is Right on the money. If you do change your rod use 289 hipo rods basically the same as the 302 boss rod, you need to polish the beams to eliminate stress risers and replace the rod bolt with ARP rod bolts.
: : Hey .. thanks for the advice.. it sounds good. but i do have one question. the rods on the 302 are longer than on the 289, right?? or no? can ya just explain to me how this works? it kinda seems to me that the rods on the 302 were designed for that engine so putting what i would imagine to be smaller rods in it would screw it up. But if ya can explain this to me that would rule. THANK YOU VERY MUCH!!!
: : Jason
: No.Roadrage is telling you this: The 289(5.155 long) connecting rods are really .065 inches longer than the 302 rods(5.090) which pushes the piston up that much farther...actually out of the bore, so then you machine off the protruding portion of the piston and get a zero deck height which gives you a nice compression ratio with stock size chambers and a lighter piston to boot. The combo I use is a late model 5.0 piston(forged) with the metric ring package(low drag) and a mildly ported '70 351 cylinder head. About 325-350 hp with a nice cam and dual plane intake.
: : : contrary to popular belief, a 302 is a very ent little motor.
: : : all this talk of 351 windsors, clevelands, and 428's in a maverick, strike me as over-kill. the 302 itself, barely fits in. i dont understand why anyone would go through all that trouble and expense to adapt a motor that the car was not engineered for.
: : : there is a trick illustrated in pat ganahl's "ford performance" book, that will really bring your 302 to life.
: : : what the trick is, is to put 289 connecting rods in your 302. this gives your old small block a longer compression stroke. i personally know of 2 people who have done this trick and it ROCKS! i am definitely going to do this trick to my 302 when rebuild time comes around.
: : : one car is a 63 ranchero and the other a 66 mustang. in both cases, these cars are ridiculously fast. they were fast hot rods before the trick. both owners will concur that the trick is responsible for why they are so fast now.
: : : this same logic obviously applies to our mavericks as well.
: : : i was with my friend in his 66 mustang when he easily ran away from a saleen mustang, he raced. this made a believer out of me.
: : : the ranchero, i have never witnessed in a race. however, i do know with close to 300 horses, peg leg transmission, original brakes, and 4 speed toploader transmission, that this car is an overpowered, unsafe beast. it is the most unsafe car i have ridden in.
: : : if you want power, use your head. a 428 maverick(or other engine) is possible, but costly and will be unsafe.
: : : i highly recommend the making the most of your 302.
: : : roadrage