comp xe274 in a 305?
comp xe274 in a 305?
I just bought a dual exhaust for my 87 Monte carlo 305 with a edelbrock 600 holly intake/ headers and before I knew it I had the engine and cam out of it
I had a free cam I was going to use but it looked worn so I ordered a xe274 cam and am just curious if anyone has ever tried it in a 305? What were your thoughts of it how did it run?
I had a free cam I was going to use but it looked worn so I ordered a xe274 cam and am just curious if anyone has ever tried it in a 305? What were your thoughts of it how did it run? Supreme Member
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Joined: Aug 2007
Posts: 1,390
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From: Bright, IN
Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: comp xe274 in a 305?
Too big for factory compression ratio.
Plus, you'd need some serious gearing and torque converter to get useable power out of it.
That's a flat tappet cam. Isn't your block roller?
Plus, you'd need some serious gearing and torque converter to get useable power out of it.
That's a flat tappet cam. Isn't your block roller?
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Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: comp xe274 in a 305?
I run that cam in my 355, great cam but a bit much for a 305 and it will not be happy on lower compression. If yours is a 87 block get a roller cam.
Joined: Jan 2005
Posts: 10,426
Likes: 497
From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: comp xe274 in a 305?
I agree XE274 is too much cam....You should consider stepping back to something like this. Advance it 4* to sit on a 104* ICL. 87 Monte should have 081 heads and a flat tappet cam stock. I have only seen a few 88s with roller cams.
http://m.summitracing.com/parts/isk-...make/chevrolet
http://m.summitracing.com/parts/isk-...make/chevrolet
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: comp xe274 in a 305?
Too many different criteria have to be met to make that cam work, but if you do hit them, it will be a terrible daily, but it will be very, very quick.
Member
Joined: Nov 2014
Posts: 258
Likes: 0
From: Mose Lake
Car: 86 Z28 T-Top
Engine: Vortec 350
Transmission: 700R4
Axle/Gears: I think 3.73 open dif
Re: comp xe274 in a 305?
Cam is on the large side. If you can I would get a stall converter in the 2,500-3,000 RPM range and some 3.73 gears to go with it. The cam will have a slightly higher power band in your 305 than it would have in a 350. I would look at getting some aftermarket 305 heads or having 1.94 intake/1.5 exhaust valves installed in your heads and having them milled if you plan on keeping that cam in the 305.
Re: comp xe274 in a 305?
Thanks for the responses, For some more info I left out my car has 3.73 gears shift kit 1800 stall although im sure more would be better. 9.5 compression also not a roller block. Again just to update so u guys have more info. Planning trick flow 58cc heads in the future but I don't have the money rite now.
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Supreme Member
iTrader: (1)
Joined: Aug 2007
Posts: 1,390
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From: Bright, IN
Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: comp xe274 in a 305?
1800 stall is about stock. It won't like that 274 cam
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: comp xe274 in a 305?
And honestly for that cam you probably want 4.10s. That cam in a 305 is borderline in terms of streetable. You'll need a lot of compression too.
Member
Joined: Nov 2014
Posts: 258
Likes: 0
From: Mose Lake
Car: 86 Z28 T-Top
Engine: Vortec 350
Transmission: 700R4
Axle/Gears: I think 3.73 open dif
Re: comp xe274 in a 305?
The stall is too low but every thing else will be fine. The trick flow heads would be awesome but your almost border line being able to get a rebuilt 350 with some 2.02 heads from a machine shop for just a little more cash.
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