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Originally posted by twstd5o:
I have an xe274hr in my 331...93pony should be able to help for sure.

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Originally posted by sac 5.0:

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Originally posted by twstd5o:
I have an xe274hr in my 331...93pony should be able to help for sure.

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that is the same cam im am using but im carbed i think i might change it out for its big brother the 282hr solid roller thou but it pulls hard all the way to like 6500

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Originally posted by JohnB:
There is more to engines than an alphabet cam retarded and a set of AFR's.

The compression ratio, intended usage, rocker ratio, etc...will determine cam selection.

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Originally posted by JohnB:
Naaa, no flame intended.

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Originally posted by JohnB:
You obviously read my previous post. Do you know what he wants to do with the car? What he expects? How much it will be driven? Will it be N/A or otherwise? What CR? Etc,etc..

I don't...and I pulled the engine.

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I have no information about the car other than what he asked in the post and that was "what cam for a 331" with his basic list of parts. He made no comments about power adders so I assume NA. Since you're working on the project currently, then I'm sure you can help answer his question, and explain WHY it'll work. If he has no idea what he wants, then he shouldn't be asking these very general questions until he knows what he wants

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1991 GT Convertible: Stock 157k mile shortblock, HiTech cam, AFR 165 heads, Edelbrock RPM intake, 1 3/4 headers

12.23 at 112.99
Best MPH 113.97

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Originally posted by JohnB:
And you are EXACTLY right.

But if you got a 331 kit for a song, would you want to hear "start over" and sell all your parts, along with a laundry list of your accomplishments? I doubt it.

If one is to make a recommendation, how about one that goes with the parts given?

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I get your point, and you're right . But the original post lacked a lot of valuable info and left a lot of room for speculation. Even at that, 93Pony has run the X cam with those heads etc with good results so I think that's why he said what he did. He can clarify for himself though. Shaun's primary choice has always been custom, so the safe bet in this thread would be "custom". That way no matter what his needs are (when he figures out what he wants) he will get something that matches his overall goals

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1991 GT Convertible: Stock 157k mile shortblock, HiTech cam, AFR 165 heads, Edelbrock RPM intake, 1 3/4 headers

12.23 at 112.99
Best MPH 113.97

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Originally posted by 2stangs69-91:
BTW I wasn't flaming 93 pony. I was just laughing at his reply. The get rid of everything start over aproach (especialy after 91pony runs good with edelbrock heads) . I assumed he had a 331 already and just wanted a nice combo to go with it.

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Sorry Mike, didn't mean to imply you. The can't win comment was because of the custom cam debates in the past. Looks like you got your problems sorted out with the 91 and it's running strong
Saw the pics of the 69 Looks mean

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1991 GT Convertible: Stock 157k mile shortblock, HiTech cam, AFR 165 heads, Edelbrock RPM intake, 1 3/4 headers

12.23 at 112.99
Best MPH 113.97

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Originally posted by 93PONY:
I have a 331....but it doesn't mean it's for everybody.

I know what he's after. 11.7-11.9 in a full weight GT with a smogable cam. Putting edelbrock performers on a 331 will not neccessarily make the car faster then putting then having them on a 306. Sure, more torque, but the power will peak sooner in the RPM, which means less HP....especially with a smogable cam.

So far, I believe 91PONY is the only one with Edelbrock Performer heads to locally crack into the 11's in a full weight car. I know this combo well....I built it. I know what it takes to go 11's. 320RWHP in a full weight GT with a T5 & a good driver will do it.

I can build a 320+RWHP 306 with un-ported AFR's & box-stock parts with a smogable custom cam. (or mimick AaronC's 340RWHP 306!) Give it another 25 cubes, a shorter runner intake, & a larger cam & 375RW isn't a problem (not smogable). Or a 347 built for max N/A power.... But a 331 with Un-ported Edelbrock Performers, RPM intake, longtubes, & an X303 will have a hard time cracking 300RWHP.

Point is, if you're on a budget why spend an extra $1000 on a 331 over a 306? (new balancer, new flywheel, + the cost of the 'kit') There is more to gain from swapping out the heads for a better set & keeping the stock stroke.

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