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The REB kit would be interesting to learn about too.
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Take the 50 to 70 HP with a grain of salt. A 70 HP gain would be a ~54% increase and you WILL NOT see that with any bolt on equipment on a abysmally low compression engine with limited rpm range. IMHO and experience, you are wasting your money.Alright thanks for the help guys, Im going to be swapping the carb out for a weber 38-38 carb along with headers and a new intake manifold from clifford performance, supposed to be good for another 50-70 horsepower and about the same if not more torque! Henderson I will let you know when I can send you my old carb!
DittoThe governor on a GMC M211, M135 ect: is connected to the distributor and transmission and will affect the shifting of the automatic transmission. Be careful when making changes.
Ditto
I'd hate to see you have to have your passenger squeezin' away with a Mityvac hand pump just to get to second gear with that new found power!
I have had three 302 powered vehicles in my live and lived and breathed them for over a decade. It is REALLY hard to get horsepower out of GMs old engines. It doesn't matter what you spend, money does not equal horsepower. A high flow intake and exhaust do little good when you are limited to a low maximum rpm by the heavy stock pistons. You'd have to mill off 1/8" off of the head to get to ~8.3:1 and by that time, the side cover won't fit, you'll mess up your rocker arm geometry, and still have limited rpm due to the pistons. I've been there, done that, and know better. I'd cancel my order with Clifford and call Patrick Dykes at Patrick's Antique Cars and Trucks who specializes in this engine.Interesting, but I have a hard time beleiving that the claims from people at clifford performance are bogus, as they are pretty much the go to guys for chevy inline 6 engines. 50-70 hp doesnt seem unreasonable to me, your upgrading to a $600+ carb, upgrading to a much higherflow intake manifold, and swapping over to dual exhaust with tuned headers, if anything I can also have the head ground down to increase compression. I think this is the route I am going to go for now, because it seems fairly simple to do, maybe a good starting point, but I will save the notes above in case I decide to go farther. Thanks again.
Neither Clifford nor Tom have dyno'ed this combination and are guessing at what kind of increase you will get. I posted REAL numbers and the kind of increase you are expecting required more than an intake/exhaust swap. Patrick Dykes will tell you that you the same thing that he told me many years ago regarding my similar cludge: "plumbers nightmare". You are better off spending the cash elsewhere.I still think I can get 50hp or so more out of the engine with this combo. Tom from alfa heaven has echoed what clifford performance said, although he said it would be closer to 50-60hp. All we can do is put it on and see.
What happend to the post? I thought I read somewhere you built 5 diesel trucks that all run under 11 in the quarter?
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