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#1 |
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Join Date: Mar 2002
Location: NS CANADA
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Building a 302 crate motor which calls for the 303A cam (.498 lift) and I just came across a good deal on a 303B cam (.480 lift but more duration)
I know the duration rule is unlimited and I'm waiting for a price from bullet for a proper .498lift stocker cam, but this would be a cheap alternative just to get it on the track. So, can I run a .480lift cam when it calls for a .498lift one? I know you can't go over, but can you run under? (I'm thinking yes but want to confirm before putting out an offer for it) |
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#2 |
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Yes, you can be under. You'll love your Bullet cam when it arrives. They did the one in our Pure Stocker.
Scott |
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#3 |
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Thank for the answer Tar Heel. I thought so but just wanted to throw it out there in case.
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#4 |
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Location: Somerset,Ky
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gioinbroke2,
Don't waste your time w/303B/Acam,you'll be short 20-30 degrees duration @ .050 of what crate motor stocker cam will be@.050,not to mention difference @.200. If it's good deal buy it resale it and add those$'s to your bullet cam purchase. Mike Taylor 3601 |
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#5 |
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I think it depends on what you are looking for. Your car will run under the index with the B303 cam. I ran one in my car for 5 seasons.
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Chris Bowman The Mountain State Mustang 1984 Mustang GT350 |
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#6 |
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Join Date: Mar 2002
Location: NS CANADA
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Thanks for the replies, didn't see there were more responses till now.
Mike I know it's way to short on duration, but this first engine will be low dollar (stock roller shortblock) Basically to get me out there. Then I'll build a bullet with the gapless rings and proper cam/etc. Chris, that's great to hear, yes I'm building something with a soft index (I'm also gathering parts so I can eventually go 1979 2bbl U/SA because of the low hp rating) Now if it will stop snowing and warm up a bit..... |
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#7 |
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Going over some old posts of mine looking for info.
Just realised I've been collecting bits and pieces since 2013! There's being cautious, watching the hp hits before committing to a combo...but 10 years??? LOL!! Happy to say I am making headway finally. (I think just committing to it was the biggest hurdle) |
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#8 |
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Join Date: Feb 2008
Location: Georgetown, Indiana (close to Louisville, KY)
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Who runs Crate motors? Rules?
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#9 |
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Join Date: Jan 2004
Location: Belmont N.S. Canada
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Nhra allows the old IHRA classes like crate motor and pure stock to run at opens here in division 1 and I believe division 2 does as well. As such our local association is one of many that allows them to continue running.
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Chris Chapman 1969 Chevelle NHRA F-G/SA 1090 |
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#10 | |
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Pure Stock was fun. Eventually spent a lot more money converting to J-K/SA. Best the Impala SS did in F/PS was a 12.47sec/107mph. Index was a 13.75....there was 3 tenths more in it. Had to spend a good bit more cash. Open the headers, some mods could run the 12.65 K/SA index on a warm days. On fast track cool days, estimate 12.10's Rock and Roll !! |
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