i will be using it for fishing long trips and some power when i need it i mean im not trying to build a drag van here i just want somthing with some power .i bought the pefromer rpm air gap intake tonight. next week im going to get a 3000 stall converter. then me and my dad are going to fab up a supercharger for it . hemi eater has confidence in me a my little 302 and so do i hemi has helped me alot at makeing up my mind cam choce opon other things so he thinks intake i got the intake im happy with my 302 .thanks all u guys
robert, please don't put a performer rpm cam in your 302.... I had one in a 351W and it was noticably lumpy at idle. it won't have much low end in a 302.
now, when you say you want low end torque, is that for chugging down roads to get to a fishing hole? or is it to run at a track when you smack the gas down you want the van to get up and boogie. I am sorry but having it both ways is nearly impossible... on your budget.
I can say a 3000 stall converter will not be fun on the freeway and suck fuel like crazy, especially with your 4:10 gears.
I think at this point you have a 270H cam in it? 220-224 duration at ..050 lift on the intake? 500 lift? that is about as much as you can stick in there and have it driveable.
please take everyone's recommendation and realize that at this point the heads are the bottleneck and no amount of cam changes will have much affect on that...there are rebuilt & ported E7 heads out there with bigger valves for less than 500 bucks. this will really change things. any other iron gt40/gt40p/aftermarket iron head will make a huge difference.
robert, what pistons did you use during the rebuild? cast or forged? any pictures? what was the exact part number? this will help us direct you to a cylinder head that you can squeeze in to your budget.
oh, and if you want to continue to try and get low end torque out of a 302, you need to fuel inject it with a 90's vintage mustang style long runner intake... either a ported stock one, a cobra, gt40.
that will give you some semblance of low end torque & throttle response in the 302.
don't change the cam, it won't do much.
What Jeff said. Get an RV/truck converter instead of a 3000 stall. That's madness.
A 302 is what it is. Not really made for big heavy trucks/vans. It will perform well within it's limitations, but if you're looking for low-end there's no substitute for cubic inches (and stroke).
If your 302 is in good shape (you said has 10,000 miles on it) pull it and sell it to a mustang guy, he should give you decent money for it. Go to the JY and pull a 351 (preferably an 87 or up), put a 268h cam in it if its not a roller block, put an HO cam or trick flow stg one cam in if it is, put a performer RPM intake, put a 600 or 650 vacuum secondary carb on it. This should have all the torque you need and have a nice idle at that, especially with the TFS 1 cam. Dont put in the 3000 stall, a 2000 should be fine even with a TFS1 cam. I mean I love the 302 as much as you do, and I think it is a better engineered engine than the 351w, but your asking a little too much unless you wanna put some decent heads on it, you have to rev a 302 to get power out of it, and its possible to get a BUNCH of power out of a 302, but you wont do it with stock castings and revving a 302 in a van with a 3000 stall is almost a waste of a good 302, I mean I know you got what you got, but lets look at things in a real way here, the 302 just aint gonna do it for you on a cheap basis.
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74/71 maverick grabber EFI HO (under construction)
i put in that edlebrock the 351 cam kit in it and i love it lost a little low end but once your moving its great lopes a bit still has some tq and tons of top end and im still using the 289 intake .i talked to the guy i bought the motor from he said my 302 has 351 pistons in it so with e7 heads the compression should be 11.1 thats why i thought it was stroked but the skirts on the pistons are shaved because the pin height on a 351 is diffrent . but any way soon to come heads and a peformer rpm intake .and a 3000 stall lockup convertor . thanks guys
You dont have 351 pistons in your 302, I dont think there is a rod that would work with that combo and even if there was you would have a horrible rod ratio. 351 pistons with stock 302 rods will stick out of the block. The only way to get 11:1 with e7 heads is to have domed pistons and even at that you wouldnt be able to run pump gas.
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74/71 maverick grabber EFI HO (under construction)
i talked to the guy i bought the motor from he said my 302 has 351 pistons in it so with e7 heads the compression should be 11.1 thats why i thought it was stroked but the skirts on the pistons are shaved because the pin height on a 351 is diffrent
the 351W piston is .167 taller than a 302 so that would put the piston about .152 out of the hole........no amount of grinding on the skirt will change that, you would have to mill the tops of the pistons .152 to get it to 0 deck.
the wrist pins are the same either .927 or .912 for 302 or 351W
no the 302 is bored 40 over im sorry i was going from what i mesured the pistons said .40 the skirts are shaved so they dont hit the counter weights on the crank i was assuming it was stroked but when i mesured it 3 inches down the hole to the top of the piston so i dont know why the skirts are shaved but they are .
